00706nas a2200217 4500008004100000245005900041210005900100260003400159300000900193100001900202700002000221700002000241700001900261700001700280700001700297700001900314700002200333700002000355700001400375856009900389 2015 eng d00aCollaborative Mobile 3D Reconstruction of Urban Scenes0 aCollaborative Mobile 3D Reconstruction of Urban Scenes aSingaporebSpringercNov 2014 a1-161 aTanacs, Attila1 aMajdik, András1 aHajder, Levente1 aMolnar, Jozsef1 aSanta, Zsolt1 aKato, Zoltan1 aChen, Chu-Song1 aKankanhall, Mohan1 aLai, Shang-Hong1 aHwee, Joo uhttps://www.inf.u-szeged.hu/publication/collaborative-mobile-3d-reconstruction-of-urban-scenes02019nas a2200169 4500008004100000245006500041210006500106260002300171300001400194490000700208520145100215100001901666700002101685700002101706700001701727856010501744 2015 eng d00aEstimation of linear deformations of 2D and 3D fuzzy objects0 aEstimation of linear deformations of 2D and 3D fuzzy objects bElseviercApr 2015 a1387-13990 v483 a
Registration is a fundamental task in image processing, it is used to determine geometric correspondences between images taken at different times and/or from different viewpoints. Here we propose a general framework in n-dimensions to solve binary shape/object matching problems without the need of establishing additional point or other type of correspondences. The approach is based on generating and solving polynomial systems of equations. We also propose an extension which, provided that a suitable segmentation method can produce a fuzzy border representation, further increases the registration precision. Via numerous synthetic and real test we examine the different solution techniques of the polynomial systems of equations. We take into account a direct analytical, an iterative least-squares, and a combined method. Iterative and combined approaches produce the most precise results. Comparison is made against competing methods for rigid-body problems. Our method is orders of magnitude faster and is able to recover alignment regardless of the magnitude of the deformation compared to the narrow capture range of others. The applicability of the proposed methods is demonstrated on real X-ray images of hip replacement implants and 3D CT volumes of the pelvic area. Since the images must be parsed through only once, our approach is especially suitable for solving registration problems of large images.
1 aTanacs, Attila1 aLindbald, Joakim1 aSladoje, Nataša1 aKato, Zoltan uhttps://www.inf.u-szeged.hu/publication/estimation-of-linear-deformations-of-2d-and-3d-fuzzy-objects00718nas a2200217 4500008004100000245006200041210006200103260003800165300000800203100001900211700002000230700001900250700001400269700001700283700002700300700001400327700002100341700001600362700002000378856010200398 2014 eng d00aEstablishing Correspondences between Planar Image Patches0 aEstablishing Correspondences between Planar Image Patches aWollongong, AustraliabIEEEc2014 a1-71 aTanacs, Attila1 aMajdik, András1 aMolnar, Jozsef1 aRai, Atul1 aKato, Zoltan1 aBouzerdoum, Abdesselam1 aWang, Lei1 aOgunbona, Philip1 aLi, Wanqing1 aPhung, Son, Lam uhttps://www.inf.u-szeged.hu/publication/establishing-correspondences-between-planar-image-patches00833nas a2200253 4500008004100000022002200041245005600063210005500119260005200174300001200226100002000238700001800258700001700276700001600293700002000309700002800329700002300357700001900380700002700399700001900426700001800445700002400463856009200487 2014 hun d a978-963-473-712-400aKépfeldolgozás a szegedi informatikus-képzésben0 aKépfeldolgozás a szegedi informatikusképzésben aDebrecen, HungarybUniversity of Debrecenc2014 a667-6751 aBalázs, Péter1 aKatona, Endre1 aKato, Zoltan1 aNagy, Antal1 aNémeth, Gábor1 aNyúl, László, Gábor1 aPalágyi, Kálmán1 aTanacs, Attila1 aVarga, László Gábor1 aKunkli, Roland1 aPapp, Ildikó1 aRutkovszky, Edéné uhttps://www.inf.u-szeged.hu/publication/kepfeldolgozas-a-szegedi-informatikus-kepzesben00451nas a2200121 4500008004100000245005600041210005500097260007200152100001900224700001800243700002100261856004700282 2014 eng d00aX. Magyar Számítógépes Nyelvészeti Konferencia0 aX Magyar Számítógépes Nyelvészeti Konferencia aSzegedbSzegedi Tudományegyetem Informatikai Tanszékcsoportc20141 aTanacs, Attila1 aVarga, Viktor1 aVincze, Veronika uhttp://www.inf.u-szeged.hu/rgai/mszny2014/00668nas a2200157 4500008004100000245010600041210007600147260003800223300001400261100001900275700002100294700002100315700001700336700002100353856013600374 2013 eng d00a2D és 3D bináris objektumok lineáris deformáció-becslésének numerikus megoldási lehetőségei0 a2D és 3D bináris objektumok lineáris deformációbecslésének numer aVeszprémbNJSZT-KÉPAFcJan 2013 a526 - 5411 aTanacs, Attila1 aLindblad, Joakim1 aSladoje, Nataša1 aKato, Zoltan1 aCzúni, László uhttps://www.inf.u-szeged.hu/publication/2d-es-3d-binaris-objektumok-linearis-deformacio-becslesenek-numerikus-megoldasi-lehetosegei00641nas a2200169 4500008004100000245006200041210006200103260006700165300001400232100001900246700001900265700002200284700002100306700002000327700002200347856010200369 2013 eng d00aCar Recognition from Frontal Images in Mobile Environment0 aCar Recognition from Frontal Images in Mobile Environment aTriestebUniversity of Zagreb; University of TriestecSep 2013 a812 - 8161 aVarjas, Viktor1 aTanacs, Attila1 aRamponi, Giovanni1 aLončarić, Sven1 aCarini, Alberto1 aEgiazarian, Karen uhttps://www.inf.u-szeged.hu/publication/car-recognition-from-frontal-images-in-mobile-environment01890nas a2200193 4500008004100000245010100041210006900142260002800211300001400239520116200253100001901415700001901434700001701453700002201470700002101492700002001513700002201533856014101555 2013 eng d00aEvaluation of Point Matching Methods for Wide-baseline Stereo Correspondence on Mobile Platforms0 aEvaluation of Point Matching Methods for Widebaseline Stereo Cor aTriestebIEEEcSep 2013 a806 - 8113 aWide-baseline stereo matching is a common problem of computer vision. By the explosion of smartphones equipped with camera modules, many classical computer vision solutions have been adapted to such platforms. Considering the widespread use of various networking options for mobile phones, one can consider a set of smart phones as an ad-hoc camera network, where each camera is equipped with a more and more powerful computing engine in addition to a limited bandwidth communication with other devices. Therefore the performance of classical vision algorithms in a collaborative mobile environment is of particular interest. In such a scenario we expect that the images are taken almost simultaneously but from different viewpoints, implying that the camera poses are significantly different but lighting conditions are the same. In this work, we provide quantitative comparison of the most important keypoint detectors and descriptors in the context of wide baseline stereo matching. We found that for resolution of 2 megapixels images the current mobile hardware is capable of providing results efficiently.
1 aJuhász, Endre1 aTanacs, Attila1 aKato, Zoltan1 aRamponi, Giovanni1 aLončarić, Sven1 aCarini, Alberto1 aEgiazarian, Karen uhttps://www.inf.u-szeged.hu/publication/evaluation-of-point-matching-methods-for-wide-baseline-stereo-correspondence-on-mobile-platforms00485nas a2200133 4500008004100000245005500041210005500096260003800151300001400189100001900203700001900222700002100241856008900262 2013 eng d00aGépkocsi felismerés elölnézeti képek alapján0 aGépkocsi felismerés elölnézeti képek alapján aVeszprémbNJSZT-KÉPAFcJan 2013 a294 - 3081 aVarjas, Viktor1 aTanacs, Attila1 aCzúni, László uhttps://www.inf.u-szeged.hu/publication/gepkocsi-felismeres-elolnezeti-kepek-alapjan01000nas a2200133 4500008004100000245003800041210003800079260001200117520061500129100001900744700001900763700001700782856006700799 2012 eng d00aAffine Registration of 3D Objects0 aAffine Registration of 3D Objects c2012///3 a
This is the sample implementation and benchmark dataset of the binary image registration algorithm described in the following papers: Attila Tanacs and Zoltan Kato. Fast Linear Registration of 3D Objects Segmented from Medical Images. In Proceedings of International Conference on BioMedical Engineering and Informatics, Shanghai, China, pages 299--303, October 2011. IEEE. Attila Tanacs, Joakim Lindblad, Natasa Sladoje and Zoltan Kato. Estimation of Linear Deformations of 3D Objects. In Proceedings of International Conference on Image Processing, Hong Kong, China, pp. 153-156, September 2010. IEEE.
1 aVarjas, Viktor1 aTanacs, Attila1 aKato, Zoltan uhttp://www.inf.u-szeged.hu/~kato/software/affbin3dregdemo.html00572nas a2200169 4500008004100000245005500041210005500096260002800151300001400179100001900193700002100212700002100233700001700254700001700271700002300288856009100311 2011 eng d00a3D objektumok lineáris deformációinak becslése0 a3D objektumok lineáris deformációinak becslése aSzegedbNJSZTcJan 2011 a471 - 4801 aTanacs, Attila1 aLindblad, Joakim1 aSladoje, Nataša1 aKato, Zoltan1 aKato, Zoltan1 aPalágyi, Kálmán uhttps://www.inf.u-szeged.hu/publication/3d-objektumok-linearis-deformacioinak-becslese01274nas a2200205 4500008004100000020002300041245007300064210006900137260002900206300001400235520058300249100001900832700001700851700002000868700001900888700001400907700001900921700001500940856011300955 2011 eng d a978-1-4244-9351-7 00aFast linear registration of 3D objects segmented from medical images0 aFast linear registration of 3D objects segmented from medical im aShanghaibIEEEcOct 2011 a294 - 2983 aIn this paper a linear registration framework is used for medical image registration using segmented binary objects. The method is best suited for problems where the segmentation is available, but we also propose a general bone segmentation approach for CT images. We focus on the case when the objects to be registered differ considerably because of segmentation errors. We check the applicability of the method to bone segmentation of pelvic and thoracic CT images. Comparison is also made against a classical mutual information-based registration method. © 2011 IEEE.
1 aTanacs, Attila1 aKato, Zoltan1 aDing, Yongsheng1 aPeng, Yonghong1 aShi, Riyi1 aHao, Kuangrong1 aWang, Lipo uhttps://www.inf.u-szeged.hu/publication/fast-linear-registration-of-3d-objects-segmented-from-medical-images00552nas a2200133 4500008004100000245008200041210007600123260003500199300001300234100001900247700002100266700001900287856011200306 2011 hun d00aOrvosi képfeldolgozás, Orvosi algoritmusok, Távérzékelés, mikroszkópia0 aOrvosi képfeldolgozás Orvosi algoritmusok Távérzékelés mikroszkó aBudapestbTypotex Kiadóc2011 a57 - 1051 aTanacs, Attila1 aCzúni, László1 aTanacs, Attila uhttps://www.inf.u-szeged.hu/publication/orvosi-kepfeldolgozas-orvosi-algoritmusok-taverzekeles-mikroszkopia00431nas a2200121 4500008004100000020002200041245005900063210005800122260004700180100001900227700002100246856004200267 2011 eng d a978-963-306-121-300aVIII. Magyar Számítógépes Nyelvészeti Konferencia0 aVIII Magyar Számítógépes Nyelvészeti Konferencia aSzegedbSzegedi TudományegyetemcDec 20111 aTanacs, Attila1 aVincze, Veronika uhttp://www.inf.u-szeged.hu/mszny2011/01140nas a2200157 4500008004100000245005200041210005200093260004100145300001400186520061200200100001900812700002100831700002100852700001700873856009200890 2010 eng d00aEstimation of linear deformations of 3D objects0 aEstimation of linear deformations of 3D objects aHong Kong, Hong KongbIEEEcSep 2010 a153 - 1563 aWe propose a registration method to find affine transformations between 3D objects by constructing and solving an overdetermined system of polynomial equations. We utilize voxel coverage information for more precise object boundary description. An iterative solution enables us to easily adjust the method to recover e.g. rigid-body and similarity transformations. Synthetic tests show the advantage of the voxel coverage representation, and reveal the robustness properties of our method against different types of segmentation errors. The method is tested on a real medical CT volume. © 2010 IEEE.
1 aTanacs, Attila1 aLindblad, Joakim1 aSladoje, Nataša1 aKato, Zoltan uhttps://www.inf.u-szeged.hu/publication/estimation-of-linear-deformations-of-3d-objects00404nam a2200109 4500008004100000245005800041210005700099260004300156100001900199700002100218856005500239 2010 eng d00aVII. Magyar Számítógépes Nyelvészeti Konferencia0 aVII Magyar Számítógépes Nyelvészeti Konferencia aSzegedbSzegedi Tudományegyetemc20101 aTanacs, Attila1 aVincze, Veronika uhttp://www.inf.u-szeged.hu/mszny2010/mszny2010.pdf01658nas a2200205 4500008004100000245007100041210006900112260003500181300001400216520096100230100002001191700001801211700001901229700002401248700001701272700002101289700001101310700002001321856011101341 2009 eng d00aObject subsampling strategies to improve computational performance0 aObject subsampling strategies to improve computational performan aSalzburgbIEEE PresscSep 2009 a448 - 4533 aWe investigate object simplification methods based on Centroidal Voronoi Tesselation (CVT) that share the possibility of great speed-ups in various scenarios. We propose Constrained CVT to sample points from the object boundary and the Region-based CVT to be able to subsample lower dimensional objects, as well. Moreover we introduce custom weight functions based on object properties. Thus, wecan be more specific on what are the important parts of the subsampled object. We also list several novel applications corresponding to the theoretical achivements presented. The advantages of applying the subsampling strategies are presented for registration, human detection, and the segmentation of the retinal vascular system, respectively. Quantitative results are shown to check the deterioration of the accuracy with the level of subsampling, and the computational gain. We also make comparisons with other naive (e.g. random) subsampling methods.
1 aHajdú, András1 aVeres, Péter1 aTanacs, Attila1 aHarangozó, Rorland1 aZinterhof, P1 aLončarić, Sven1 aUhl, A1 aCarini, Alberto uhttps://www.inf.u-szeged.hu/publication/object-subsampling-strategies-to-improve-computational-performance01494nas a2200205 4500008004100000245005100041210005100092260004500143300001400188520082800202100001901030700001901049700002101068700002101089700001701110700002401127700002601151700002001177856009101197 2009 eng d00aRecovering affine deformations of fuzzy shapes0 aRecovering affine deformations of fuzzy shapes aOslo, NorwaybSpringer-VerlagcJune 2009 a735 - 7443 aFuzzy sets and fuzzy techniques are attracting increasing attention nowadays in the field of image processing and analysis. It has been shown that the information preserved by using fuzzy representation based on area coverage may be successfully utilized to improve precision and accuracy of several shape descriptors; geometric moments of a shape are among them. We propose to extend an existing binary shape matching method to take advantage of fuzzy object representation. The result of a synthetic test show that fuzzy representation yields smaller registration errors in average. A segmentation method is also presented to generate fuzzy segmentations of real images. The applicability of the proposed methods is demonstrated on real X-ray images of hip replacement implants. © 2009 Springer Berlin Heidelberg.
1 aTanacs, Attila1 aDomokos, Csaba1 aSladoje, Nataša1 aLindblad, Joakim1 aKato, Zoltan1 aSalberg, Arnt-Borre1 aHardeberg, Jon, Yngve1 aJenssen, Robert uhttps://www.inf.u-szeged.hu/publication/recovering-affine-deformations-of-fuzzy-shapes00533nam a2200121 4500008004100000245007000041210006700111260007200178100001900250700001900269700002100288856010200309 2009 eng d00aVI. Magyar Számítógépes Nyelvészeti Konferencia (MSZNY 2009)0 aVI Magyar Számítógépes Nyelvészeti Konferencia MSZNY 2009 aSzegedbSzegedi Tudományegyetem Informatikai Tanszékcsoportc20091 aTanacs, Attila1 aSzauter, Dóra1 aVincze, Veronika uhttps://www.inf.u-szeged.hu/publication/vi-magyar-szamitogepes-nyelveszeti-konferencia-mszny-200900711nas a2200181 4500008003900000245011200039210006900151260001200220300001200232100002200244700001700266700001900283700001800302700001600320700002600336700001900362856014800381 2008 d00aComparison Radiography and Tomography Possibilities of FRM-II (20 MW) and Budapest (10 MW) Research Reactor0 aComparison Radiography and Tomography Possibilities of FRMII 20 cOctober a18–271 aBalaskó, Márton1 aKuba, Attila1 aTanacs, Attila1 aKiss, Zoltán1 aNagy, Antal1 aSchillinger, Burkhard1 aArif, Muhammed uhttps://www.inf.u-szeged.hu/publication/comparison-radiography-and-tomography-possibilities-of-frm-ii-20-mw-and-budapest-10-mw-research-reactor01602nas a2200229 4500008004100000245006200041210006000103260005800163520086900221100002001090700002401110700001801134700001701152700001801169700001601187700002801203700002301231700001901254700001901273700002001292856006001312 2008 eng d00aA képfeldolgozás kutatása a Szegedi Tudományegyetemen0 aképfeldolgozás kutatása a Szegedi Tudományegyetemen aDebrecenbDebreceni Egyetem Informatikai Karc2008///3 aA digitális képfeldolgozás kutatásának a Szegedi TudományegyetemTermészettudományi és Informatikai Karán, az Informatikai Tanszékcsoport Képfeldolgozás és Számítógépes Grafika Tanszékén közel négy évtizedes hagyománya van. A Tanszék valamennyi munkatársa nemzetközileg elismert kutatómunkát folytat, melyet már több száz rangos publikáció fémjelez. Számos, a képfeldolgozás kutatásában vezető egyetemmel és kutatóintézettel építettünk ki szoros kapcsolatot és folytattunk eredményes kutatómunkát, aktív résztvevői vagyunk a hazai és a nemzetközi tudományos közéletnek. A legfontosabb, jelenleg is folyó kutatásaink: orvosi képek feldolgozása, diszkrét tomográfia, képszegmentálás, térinformatika, távérzékelés, képregisztráció, vázkijelölés, műtéti tervezés. 1 aBalázs, Péter1 aErdőhelyi, Balázs1 aKatona, Endre1 aKato, Zoltan1 aMáté, Eörs1 aNagy, Antal1 aNyúl, László, Gábor1 aPalágyi, Kálmán1 aTanacs, Attila1 aPethő, Attila1 aHerdon, Miklós uhttp://www.agr.unideb.hu/if2008/kiadvany/papers/E62.pdf00718nas a2200181 4500008003900000245011500039210006900154260001200223300001400235100002200249700002100271700001800292700001900310700001600329700001700345700001900362856015500381 2008 d00aStudy of the Inner Structure of a Damaged Control Rod by Neutron and X-ray Radiography and Discrete Tomography0 aStudy of the Inner Structure of a Damaged Control Rod by Neutron cOctober a294–3031 aBalaskó, Márton1 aSváb, Erzsébet1 aKiss, Zoltán1 aTanacs, Attila1 aNagy, Antal1 aKuba, Attila1 aArif, Muhammed uhttps://www.inf.u-szeged.hu/publication/study-of-the-inner-structure-of-a-damaged-control-rod-by-neutron-and-x-ray-radiography-and-discrete-tomography00586nas a2200145 4500008004100000022001700041245009200058210006900150250002600219260000900245100001900254700001800273700001700291856013200308 2007 eng d a#2007000204600aMethod and system for automatically transforming CT studies to a common reference frame0 aMethod and system for automatically transforming CT studies to a aUS Patent Application c20071 aTanacs, Attila1 aMáté, Eörs1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/method-and-system-for-automatically-transforming-ct-studies-to-a-common-reference-frame00394nam a2200109 4500008004100000245005600041210005500097260004300152100001900195700001900214856005100233 2007 eng d00aV. Magyar Számítógépes Nyelvészeti Konferencia0 aV Magyar Számítógépes Nyelvészeti Konferencia aSzegedbSzegedi Tudományegyetemc20071 aTanacs, Attila1 aCsendes, Dóra uhttp://nektar.oszk.hu/hu/manifestation/280037302140nas a2200217 4500008004100000020001400041245010700055210006900162260000900231300001200240490000600252520136300258100002301621700002601644700001901670700002401689700002001713700002301733700002101756856014501777 2006 eng d a1538-472100aRobotically assisted prostate brachytherapy with transrectal ultrasound guidance - Phantom experiments0 aRobotically assisted prostate brachytherapy with transrectal ult c2006 a14 - 260 v53 aPURPOSE: To report the preliminary experimental results obtained with a robot-assisted transrectal ultrasound (TRUS)-guided prostate brachytherapy system. METHODS AND MATERIALS: The system consists of a TRUS unit, a spatially coregistered needle insertion robot, and an FDA-approved treatment planning and image-registered implant system. The robot receives each entry/target coordinate pair of the implant plan, inserts a preloaded needle, and then the seeds are deposited. The needles/sources are tracked in TRUS, thus allowing the plan to be updated as the procedure progresses. RESULTS: The first insertion attempt was recorded for each needle, without adjustment. All clinically relevant locations were reached in a prostate phantom. Nonparallel and parallel needle trajectories were demonstrated. Based on TRUS, the average transverse placement error was 2 mm (worst case 2.5 mm, 80% less than 2 mm), and the average sagittal error was 2.5 mm (worst case 5.0 mm, 70% less than 2.5 mm). CONCLUSIONS: The concept and technical viability of robot-assisted brachytherapy were demonstrated in phantoms. The kinematically decoupled robotic assistant device is inherently safe. Overall performance was promising, but further optimization is necessary to prove the possibility of improved dosimetry. © 2006 American Brachytherapy Society. All rights reserved.1 aFichtinger, Gábor1 aBurdette, Everette, C1 aTanacs, Attila1 aPatriciu, Alexandru1 aMazilu, Dumitru1 aWhitcomb, Louis, L1 aStoianovici, Dan uhttps://www.inf.u-szeged.hu/publication/robotically-assisted-prostate-brachytherapy-with-transrectal-ultrasound-guidance-phantom-experiments00849nas a2200157 4500008004100000020001400041245009600055210006900151260025600220300001400476490000900490100001900499700001800518700001700536856013800553 2005 eng d a0302-974300aApplication of automatic image registration in a segmentation framework of pelvic CT images0 aApplication of automatic image registration in a segmentation fr aMAINTZ JBA, 1998, MED IMAGE ANAL, V2, P1PEKAR V, 2004, INT J RADIAT ONCOL, V60, P973, DOI 10.1016/j.ijrobp.2004.06.004 TANACS A, 2003, ACTA CYBERNET, V16, P327 WEST J, 1999, IEEE T MED IMAGING, V18, P144 ZHAN YQ, 2004, IEEE INT S BIOM IM I c2005 a628 - 6350 v36911 aTanacs, Attila1 aMáté, Eörs1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/application-of-automatic-image-registration-in-a-segmentation-framework-of-pelvic-ct-images-002165nas a2200217 4500008004100000020001400041245012400055210006900179260000900248300001400257490000700271520136000278100002401638700002001662700002001682700001901702700002301721700001901744700002201763856016201785 2005 eng d a0165-032700aDopamine transporter availability in medication free and in bupropion treated depression: a 99mTc-TRODAT-1 SPECT study.0 aDopamine transporter availability in medication free and in bupr c2005 a115 - 1230 v893 aBACKGROUND: Bupropion is thought to exert its antidepressive effect by blocking the dopamine transporter (DAT). The purpose of this study was to evaluate the DAT activity in depressed patients by means of 99mTc-TRODAT-1 SPECT in relation to the efficacy of bupropion treatment. METHODS: In 12 healthy controls and 16 depressed patients the baseline DAT activity was examined. Nine of the 16 patients went through an additional second SPECT investigation, after 4 weeks of bupropion treatment. RESULTS: In the depressed patients, the baseline DAT striatum-occipital ratio (SOR) (1.04+/-.36, mean+/-SD) was not significantly different from that in the control group (1.12+/-.33) (p>.05). Correlation was found between baseline SOR and HAM-D score change (r=-.745, p=.02) of the bupropion treated patients. The average DAT occupancy due to the bupropion treatment was 20.84+/-27.7%. No significant correlation between the therapeutical effectiveness and the occupancy was observed. LIMITATIONS: One of the limiting factors of our study has been the lack of drug monitoring. CONCLUSIONS: In good agreement with other PET studies, we found 20.84% DAT occupancy during bupropion treatment. The lack of correlation between the efficacy of therapy and occupancy of DAT may raise the question as to whether other mechanisms are involved in the effect of bupropion.1 aÁrgyelán, Miklós1 aSzabó, Zoltán1 aKanyó, Balázs1 aTanacs, Attila1 aKovács, Zsuzsanna1 aJanka, Zoltán1 aPávics, László uhttps://www.inf.u-szeged.hu/publication/dopamine-transporter-availability-in-medication-free-and-in-bupropion-treated-depression-a-99mtc-trodat-1-spect-study00671nas a2200205 4500008004100000020001400041245006700055210006500122260000900187300000900196490000700205100002400212700002000236700002000256700001900276700002300295700001900318700002200337856010600359 2004 eng d a1619-707000aEffects of bupropion in depression: a 99mTc-TRODAT SPECT study0 aEffects of bupropion in depression a 99mTcTRODAT SPECT study c2004 aS2280 v311 aÁrgyelán, Miklós1 aSzabó, Zoltán1 aKanyó, Balázs1 aTanacs, Attila1 aKovács, Zsuzsanna1 aJanka, Zoltán1 aPávics, László uhttps://www.inf.u-szeged.hu/publication/effects-of-bupropion-in-depression-a-99mtc-trodat-spect-study00473nas a2200121 4500008004100000245007700041210006900118260000900187300001200196490000700208100001900215856011700234 2004 eng d00aImage registration methods based on interactively identified point pairs0 aImage registration methods based on interactively identified poi c2004 a237-2600 v211 aTanacs, Attila uhttps://www.inf.u-szeged.hu/publication/image-registration-methods-based-on-interactively-identified-point-pairs00472nas a2200133 4500008004100000020001400041245006700055210006700122260000900189300001400198490000700212100001900219856010000238 2004 eng d a0133-339900aKijelölt pontpárokon alapuló képregisztrációs módszerek0 aKijelölt pontpárokon alapuló képregisztrációs módszerek c2004 a237 - 2600 v211 aTanacs, Attila uhttps://www.inf.u-szeged.hu/publication/kijelolt-pontparokon-alapulo-kepregisztracios-modszerek02509nas a2200265 4500008004100000245007700041210007700118260007500195300001400270520158400284100001601868700001801884700002801902700001701930700001801947700002301965700001801988700001702006700002802023700001902051700002002070700002202090700002202112856010902134 2004 eng d00aSzámítógépes képfeldolgozás oktatása a Szegedi Tudományegyetemen0 aSzámítógépes képfeldolgozás oktatása a Szegedi Tudományegyetemen aMiskolcbNeumann János Számítógép-tudományi TársaságcJan 2004 a191 - 1963 aAz SZTE Informatikai Tanszékcsoportja által gondozott szakoktanterveiben 1993 óta szerepel a képfeldolgozás és alkalmazásainak oktatása. A kreditrendszer bevezetésével a Képfeldolgozás I. tárgy kötelező az ötéves képzésben részt vevő informatikus hallgatóknak. Ezen felül a választható szakirányok között szintén szerepel a Képfeldolgozás szakirány. A szakirányon belül különböző képpfeldolgozási területeket tárgyaló kurzusok épülnek egymásra. Az elméleti megalapozás mellett a képfeldolgozás alkalmazásaira is nagy hangsúlyt fektetünk. A kutatások illetve az orvosi alkalmazások fejlesztése során szerzett eredményeket a kötelező jellegű tárgyak mellett speciálkollégiumok keretében építjül be az otkatási anyagba. Számos hallgatónk választ a képfeldolgzás területéről témát a diplomamunkájához, dolgozataikkal rendszeresen és sikerrel szerepelnek az OTDK-n. Hallgatóink évente több hónapot tölthetnek külföldi partneregyetemeinken, ahol a kutató- és fejlesztőmunka mellett nálunk is elfogadott kurzusokat teljesíthetnek. A képfeldolgozás témakörön belül "ipari" projekt munkákban is egyre több hallgató vesz részt. A doktori programon belül is meghirdetünk képfeldolgozáshoz kapcsolódó kutatási irányokat. Az évente megrendezésre kerülő, 11-éves múltra visszatekintő Képfeldolgozó Nyári Iskolának (SSIP) eddig hatszor adott otthont Szeged. A rendszvénysorozat kiemelkedő fontosságú nemzetközi fórum hallgatóink és oktatóink számára is.
1 aNagy, Antal1 aBalogh, Emese1 aDudásné Nagy, Mariann1 aKuba, Attila1 aMáté, Eörs1 aPalágyi, Kálmán1 aKatona, Endre1 aKato, Zoltan1 aNyúl, László, Gábor1 aTanacs, Attila1 aGácsi, Zoltán1 aBarkóczy, Péter1 aSárközi, Gábor uhttps://www.inf.u-szeged.hu/publication/szamitogepes-kepfeldolgozas-oktatasa-a-szegedi-tudomanyegyetemen01309nas a2200157 4500008004100000020001400041245010100055210006900156260000900225300001400234490000700248520071900255100001900974700001700993856014101010 2003 eng d a0324-721X00aEvaluation of a fully automatic medical image registration algorithm based on mutual information0 aEvaluation of a fully automatic medical image registration algor c2003 a327 - 3360 v163 aRegistration is a fundamental task in image processing. Its purpose is to find a geometrical transformation that relates the points of an image to their corresponding points of another image. Many registration algorithms have been proposed in the past decade. We present a fast, fully automatic algorithm that is capable of solving rigid-body registration of 3D images of the human brain where the images are taken by different imaging devices. We joined the Retrospective Registration Evaluation Project conducted by Vanderbilt University, USA. The evaluations of our results show that our method has the potential to produce satisfactory results, but visual inspection is necessary to guard against large errors.1 aTanacs, Attila1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/evaluation-of-a-fully-automatic-medical-image-registration-algorithm-based-on-mutual-information00753nas a2200193 4500008004100000020001400041245012600055210006900181260000900250300000800259490000700267100002300274700002100297700001800318700001900336700002300355700001800378856016300396 2003 eng d a1076-633200aPo-topic IV-05: Prostate biopsy and local therapy inside conventional closed mri with robotic assistance - animal studies0 aPotopic IV05 Prostate biopsy and local therapy inside convention c2003 a9550 v101 aFichtinger, Gábor1 aSusil, Robert, C1 aKrieger, Axel1 aTanacs, Attila1 aWhitcomb, Louis, L1 aAtalar, Ergin uhttps://www.inf.u-szeged.hu/publication/po-topic-iv-05-prostate-biopsy-and-local-therapy-inside-conventional-closed-mri-with-robotic-assistance-animal-studies01839nas a2200217 4500008004100000020001400041245006800055210006600123260000900189300001400198490000800212520115200220100002101372700001801393700002001411700001901431700002301450700002301473700001801496856010701514 2003 eng d a0033-841900aSystem for MR image-guided prostate interventions: Canine study0 aSystem for MR imageguided prostate interventions Canine study c2003 a886 - 8940 v2283 aThe purpose of this study was to demonstrate the use of a transrectal system that enables precise magnetic resonance (MR) image guidance and monitoring of prostate interventions. The system used a closed-bore 1.5-T MR imaging unit and enables one to take advantage of the higher signal-to-noise ratio achieved with traditional magnet designs, which is crucial for accurate targeting and monitoring of prostate interventions. In the first of the four canine studies, reliable needle placement, with all needles placed within 2 mm of the desired target site, was achieved. In two other studies, MR imaging was used to monitor distribution of injected contrast agent solution (gadopentetate dimeglumine mixed with trypan blue dye) in and around the prostate, thereby confirming that solution had been delivered to the desired tissue and also detecting faulty injections. In the final study, accurate placement and MR imaging of brachytherapy seeds in the prostate were demonstrated. The described system provides a flexible platform for a variety of minimally invasive MR image-guided therapeutic and diagnostic prostate interventions. © RSNA, 2003.1 aSusil, Robert, C1 aKrieger, Axel1 aDerbyshire, A J1 aTanacs, Attila1 aWhitcomb, Louis, L1 aFichtinger, Gábor1 aAtalar, Ergin uhttps://www.inf.u-szeged.hu/publication/system-for-mr-image-guided-prostate-interventions-canine-study00625nas a2200169 4500008004100000245008400041210006900125260000900194300001200203100002200215700002200237700001800259700001900277700001800296700001700314856012400331 2002 eng d00aComposition of Radiography Pictures of Whole Helicopter Rotor Blades in Hungary0 aComposition of Radiography Pictures of Whole Helicopter Rotor Bl c2002 a637-6421 aBalaskó, Márton1 aBalaskó, Zoltán1 aBalogh, Emese1 aTanacs, Attila1 aKatona, Endre1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/composition-of-radiography-pictures-of-whole-helicopter-rotor-blades-in-hungary02227nas a2200241 4500008004100000020001400041245009600055210006900151260000900220300001200229490000600241520140600247100002301653700002601676700002401702700001901726700002001745700002301765700001801788700002201806700002101828856013601849 2002 eng d a1076-633200aSystem for robotically assisted prostate biopsy and therapy with intraoperative CT guidance0 aSystem for robotically assisted prostate biopsy and therapy with c2002 a60 - 740 v93 aRationale and Objectives. The purpose of this study was to assess the work-in-progress prototype of an image-guided, robotic system for accurate and consistent placement of transperineal needles into the prostate with intraoperative image guidance inside the gantry of a computed tomographic (CT) scanner. Materials and Methods. The coach-mounted system consists of a seven-degrees-of-freedom, passive mounting arm; a remote-center-of-motion robot; and a motorized, radiolucent needle-insertion device to deliver 17-18-gauge implant and biopsy needles into the prostate with the transperineal route. The robot is registered to the image space with a stereotactic adapter. The surgeon plans and controls the intervention in the CT scanner room with a desktop computer that receives DICOM images from the CT scanner. The complete system fits in a carry-on suitcase, does not need calibration, and does not utilize vendor-specific features of the CT scanner. Results. In open air, the average accuracy was better than 1 mm at a 5-8-cm depth. In various phantoms, the average orientation error was 1.3°, and the average distance between the needle tip and the target was 2 mm. Conclusion. Results of preliminary experiments indicate that this robotic system may be suitable for transperineal needle placement into the prostate and shows potential in a variety of other percutaneous clinical applications.1 aFichtinger, Gábor1 aDeWeese, Theodore, L.1 aPatriciu, Alexandru1 aTanacs, Attila1 aMazilu, Dumitru1 aAnderson, James, H1 aMasamune, Ken1 aTaylor, Russel, H1 aStoianovici, Dan uhttps://www.inf.u-szeged.hu/publication/system-for-robotically-assisted-prostate-biopsy-and-therapy-with-intraoperative-ct-guidance02066nas a2200229 4500008004100000245007700041210007700118260004100195300001400236520126900250100001601519700001801535700002801553700001701581700001801598700002801616700002301644700001901667700001901686700002001705856011101725 2002 eng d00aSzámítógépes képfeldolgozás oktatása a Szegedi Tudományegyetemen0 aSzámítógépes képfeldolgozás oktatása a Szegedi Tudományegyetemen aDebrecenbDebreceni Egyetemc2002/// a750 - 7573 aA Szegedi Tudományegyetem tanterveiben 1993 óta szerepel aképfeldolgozás és alkalmazásainak oktatása. A tantárgy ez idő alatt sok változáson ment át. Jelenleg a Képfeldolgozás szakirányt választó hallgatók részesülnek ilyen képzésben. Az adott szakirányon belül különböző képfeldolgozási területek oktatása épül egymásra. Az oktatás során nem csak elméleti és gyakorlati ismereteket szerezhetnek a hallgatók, hanem néhány (főleg orvosi) alkalmazás is bemutatásra kerül. A kötelező jellegű tárgyak mellett speciálkollégiumok engednek bepillantást más kiegészítő területekre. A hallgatók a képfeldolgozás témával rendszeresen vesznek rész helyi és országos Tudományos DIákköri Konferenciákon. Az utóbbi időben sikerült a képfeldolgozásban érdekelt cégekkel felvenni a kapcsolatot, így évente több hallgató vehet részt ipari alkalmazások fejlesztésében. A doktori programon belül is meghirdetünk képfeldolgozáshoz kapcsolódó kutatási irányokat. Ezenkívül rendszeresen megrendezzük a nemzetközi Képfeldolgozó Nyári Iskolákat, ahol nemcsak Magyarországról, hanem a környező országokból is fogadunk hallgatókat és oktatókat. 1 aNagy, Antal1 aBalogh, Emese1 aDudásné Nagy, Mariann1 aKuba, Attila1 aMáté, Eörs1 aNyúl, László, Gábor1 aPalágyi, Kálmán1 aTanacs, Attila1 aArató, Péter1 aHerdon, Miklós uhttps://www.inf.u-szeged.hu/publication/szamitogepes-kepfeldolgozas-oktatasa-a-szegedi-tudomanyegyetemen-001481nas a2200205 4500008004100000245011200041210006900153260003300222300001200255520069800267100002300965700001800988700002101006700001901027700002301046700001801069700002001087700001701107856015101124 2002 eng d00aTransrectal prostate biopsy inside closed MRI scanner with remote actuation, under real-time image guidance0 aTransrectal prostate biopsy inside closed MRI scanner with remot aTokyobSpringer Verlagc2002 a91 - 983 aWe present the proof-of-concept prototype of a prostate biopsyrobot to be used inside a conventional high-field MRI scanner. A three degree-of-freedom (DOF) mechanical device translates and rotates inside the rectum and enters a needle into the body, and steers the needle to a target point pre-selected by the user. The device is guided by real-time images from the scanner. Networked computers process the medical images and enable the clinician to control the motion of the mechanical device that is operated remotely from outside the imager. The system is also applicable to localized prostate therapy and also demonstrates potential in other intra-cavitary procedures. 1 aFichtinger, Gábor1 aKrieger, Axel1 aSusil, Robert, C1 aTanacs, Attila1 aWhitcomb, Louis, L1 aAtalar, Ergin1 aDohi, Takeyoshi1 aKikinis, Ron uhttps://www.inf.u-szeged.hu/publication/transrectal-prostate-biopsy-inside-closed-mri-scanner-with-remote-actuation-under-real-time-image-guidance00575nas a2200169 4500008004100000020001400041245006700055210006600122260000900188300001400197490000700211100001900218700002000237700002300257700001700280856010800297 2001 eng d a0324-721X00aAffine matching of two sets of points in arbitrary dimensions.0 aAffine matching of two sets of points in arbitrary dimensions c2001 a101 - 1060 v151 aTanacs, Attila1 aCzédli, Gábor1 aPalágyi, Kálmán1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/affine-matching-of-two-sets-of-points-in-arbitrary-dimensions-000670nas a2200193 4500008004100000245006400041210006400105260003500169300001600204100002300220700001300243700001900256700001900275700001300294700002200307700002100329700002200350856010400372 2001 eng d00aApproximate Volumetric Reconstruction from Projected Images0 aApproximate Volumetric Reconstruction from Projected Images aUtrechtbSpringer Verlagc2001 a1376 - 13781 aFichtinger, Gábor1 aXu, Seng1 aTanacs, Attila1 aMurphy, Kieran1 aMyers, L1 aWilliams, Jeffrey1 aNiessen, Wiro, J1 aViergever, Max, A uhttps://www.inf.u-szeged.hu/publication/approximate-volumetric-reconstruction-from-projected-images00517nas a2200169 4500008004100000020001400041245005200055210005100107260000900158300001400167490000900181100001900190700002000209700002300229700001700252856007800269 2000 eng d a0302-974300aPoint-based registration assuming affine motion0 aPointbased registration assuming affine motion c2000 a329 - 3380 v18881 aTanacs, Attila1 aCzédli, Gábor1 aPalágyi, Kálmán1 aKuba, Attila uhttp://www.inf.u-szeged.hu/ipcg/publications/papers/Tanacs_2000_AFPAC.pdf00717nas a2200181 4500008004100000245009200041210006900133260005800202300001400260100001900274700002300293700001700316700001400333700001500347700001700362700002200379856013400401 1999 eng d00aTarget registration error of point-based methods assuming rigid-body and linear motions0 aTarget registration error of pointbased methods assuming rigidbo aLjubljanabSlovenian Society of InformaticscAug 1999 a223 - 2331 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila1 aPernus, F1 aKovacic, S1 aStiehl, H, S1 aViergever, Max, A uhttps://www.inf.u-szeged.hu/publication/target-registration-error-of-point-based-methods-assuming-rigid-body-and-linear-motions-000597nas a2200157 4500008004100000020001400041245009200055210006900147260001200216300001400228490000600242100001900248700002300267700001700290856013200307 1998 eng d a1230-053500aMedical image registration based on interactively identified anatomical landmark points0 aMedical image registration based on interactively identified ana c1998/// a151 - 1580 v71 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/medical-image-registration-based-on-interactively-identified-anatomical-landmark-points00596nas a2200157 4500008004100000020001400041245009200055210006900147260000900216300001400225490000600239100001900245700002300264700001700287856013400304 1998 eng d a1230-053500aMedical image registration based on interactively identified anatomical landmark points0 aMedical image registration based on interactively identified ana c1998 a151 - 1580 v71 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila uhttps://www.inf.u-szeged.hu/publication/medical-image-registration-based-on-interactively-identified-anatomical-landmark-points-000551nas a2200157 4500008004100000245004400041210004300085260007600128300001200204100001900216700002300235700001700258700002100275700001800296856007900314 1998 eng d00aPont alapú regisztráció, képfúzió0 aPont alapú regisztráció képfúzió aBudapestbNeumann János Számítógép-tudományi TársaságcNov 1998 a67 - 701 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila1 aKozmann, György1 aSzakolczai, K uhttps://www.inf.u-szeged.hu/publication/pont-alapu-regisztracio-kepfuzio-000549nas a2200157 4500008004100000245004400041210004300085260007600128300001200204100001900216700002300235700001700258700002100275700001800296856007700314 1998 eng d00aPont alapú regisztráció, képfúzió0 aPont alapú regisztráció képfúzió aBudapestbNeumann János Számítógép-tudományi TársaságcNov 1998 a67 - 701 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila1 aKozmann, György1 aSzakolczai, K uhttps://www.inf.u-szeged.hu/publication/pont-alapu-regisztracio-kepfuzio00685nas a2200157 4500008004100000245008600041210007500127260009600202300001000298100001900308700002300327700001700350700002000367700001900387856012100406 1997 eng d00aOrvosi képek regisztrációja interaktívan kijelölt anatómiai pontok alapján0 aOrvosi képek regisztrációja interaktívan kijelölt anatómiai pont aKeszthelybPannon Agrártudományi Egyetem Georgikon Mezőgazdaságtudományi KarcOct 1997 a1 - 81 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila1 aSziranyi, Tamas1 aBerke, József uhttps://www.inf.u-szeged.hu/publication/orvosi-kepek-regisztracioja-interaktivan-kijelolt-anatomiai-pontok-alapjan-000683nas a2200157 4500008004100000245008600041210007500127260009600202300001000298100001900308700002300327700001700350700002000367700001900387856011900406 1997 eng d00aOrvosi képek regisztrációja interaktívan kijelölt anatómiai pontok alapján0 aOrvosi képek regisztrációja interaktívan kijelölt anatómiai pont aKeszthelybPannon Agrártudományi Egyetem Georgikon Mezőgazdaságtudományi KarcOct 1997 a1 - 81 aTanacs, Attila1 aPalágyi, Kálmán1 aKuba, Attila1 aSziranyi, Tamas1 aBerke, József uhttps://www.inf.u-szeged.hu/publication/orvosi-kepek-regisztracioja-interaktivan-kijelolt-anatomiai-pontok-alapjan