Preface

It is our great pleasure to welcome you to the proceedings of KÉPAF 2025, held in Hévíz, 28-31 January 2025. This year, the conference marks its 15th edition, continuing its tradition as a premier venue in Hungary for sharing the latest research, innovative solutions, and new perspectives in the fields of image processing, computer vision, and pattern recognition.

This year's program showcases 41 regular articles and 5 demos, selected by our esteemed committee members. These papers represent the participants' latest advances across a broad spectrum of topics, including (but not limited to) object recognition, 3D recognition, medical imaging, calibration techniques, AI models, and real-time computer systems. We extend our sincere gratitude to all the authors who submitted their work and contributed to the academic richness of this conference.

The Kuba Attila Prize and the Csetverikov Dmitrij Prize will each be awarded separately to young scientists authoring the best papers selected by the dedicated committee. The Kuba Attila Prize recognizes internationally outstanding multidisciplinary work that plays a decisive role in solving fundamental problems across co-disciplines, while the Csetverikov Dmitrij Prize honors new and generally applicable theoretical methods, algorithms, or models. Additionally, the best PhD dissertation of the last two years will also be awarded.

We are delighted to host invited speakers, whose contributions to the field have shaped its present and hopefully can inspire our future:

We also take this opportunity to celebrate the achievements of past conferences and the outstanding contributions that have been recognized over the years.

Kuba Attila Prize Awards (year, name, organization, article): PhD Prize Awards (year, name, doctoral school, organization, supervisor(s), thesis title, year of defend):

Conference Committees

Acknowledgments: We are grateful for the generous support from our sponsors (University of Pannonia, NJSZT, and University of Debrecen), partners, and the broader research community. Their contributions play an essential role in the success of this conference.

We hope that you find this year's proceedings intellectually stimulating and that they spark new ideas, collaborations, and advancements. Thank you for joining us, and we look forward to another exciting year of innovation and discovery in the field of image processing.

Sincerely,

László Czúni, Conference Chair

Dániel Baráth, Program Co-chair

András Hajdu, Program Co-chair

László Szirmay-Kalos, Program Co-chair

25 January 2025

Tuesday

9:00-10:00 - Bath in Hévíz lake (optional)

12:00-13:45 - Registration & hotel check-in

14:00-14:10 - Opening

Session #1: Object Detection, Tracking, and Sensor Fusion (chair: Csaba Beleznai)

Time Paper ID Title & Authors
14:10 8 Image-to-Image Translation-Based Deep Learning Application for Object Identification in Industrial Robot Systems Erdei, Timotei István; Kapusi, Tibor; Hajdu, Andras; Géza, Husi
14:15 18 Mozgó objektumok szegmentálása LiDAR pontfelhőkben minimális számú mérés használatával Madaras, Akos; Rozsa, Zoltan; Szirányi, Tamás
14:20 12 Performance benchmarking of YOLOv5 and YOLOv8 object recognition models in traffic environment Ferenczy, András
14:25 26 Kis méretű drónok és madarak észlelése és osztályozása ritka LiDAR pontfelhőben Balla, Krisztian; Keszler, Anita; Gazdag, Sándor; Szirányi, Tamas; Majdik, Andras
14:30 43 Mesterséges intelligencia alapú megoldás úthibák detektálására LiDAR és kamera segítségével Keszler, Anita; Tizedes, László; Szabó, Máté András
14:35 52 Légifelvétel alapú relatív objektum pozíció becslés hibaanalízise Páncsics, Zsombor; Tóth, Tekla; Hajder, Levente; Nyisztor, Nelli; Juhász, Imre; Treplán, Gergely

14:40-15:30 - Poster session #1

15:30-15:50 - Coffee break

Demo Session (chair: Csaba Beleznai)

Time Title & Authors
15:50-16:50 Demo 6: Mobile Robots and Sensor Streams in an Open Spatial Computing Platform Sörös, Gábor; Eger, Sebastian
Demo 39: Kiterjesztett valóság alapú drónvezérlés kézmozdulatokkal Bugár-Mészáros, Barnabás; Majdik, András; Szeghy, Géza
Demo 55: Interactive Handshake with Spot Robot using Impedance Control Saadeh, Elias; Majdik, Andras; Sziranyi, Tamas
Demo 58: From Knowledge to Survival: Gamifying Disaster Preparedness with B-prepared Andras Majdik
Demo 57: Digitális Holografikus Mikroszkóp fluoreszcens detektorral Ákos Zarandy

17:00-18:00 - Open roundtable discussion

18:15-19:30 - Hévíz walking tour

19:45-21:30 - Dinner

Wednesday

9:00-10:00 - Invited lecture: Matej Kristan - HIDRA - a deep model for accurate storm surge flood prediction

10:00-10:30 - Coffee break

Session #2: 3D Reconstruction and Scene Understanding (chair: Levente Hajder)

Time Paper ID Title & Authors
10:30 7 Global Structure-from-Motion Revisited Pan, Linfei; Barath, Daniel; Pollefeys, Marc; Schönberger, Johannes
10:35 15 Depth completion method for Lidar based sparse depth data Pálffy, Balázs; Kövendi, József; Benedek, Csaba; Ibrahim, Yahya
10:40 20 PCD-VAE: A Permutation Invariant Point-Cloud Variational Auto-Encoder Kövendi, József; Benedek, Csaba
10:45 22 Légi 3D térkép elemzése felülről nem látható területek felderítéséhez Bugár-Mészáros, Barnabás; Majdik, András
10:50 31 Enhancing Street-Level Environment Modelling Using 3D Gaussian Splatting Szász, Erik; Zhu, Morui; Vaitkus, Márton; Szántó, Mátyás
10:55 56 Virtuális valóság alapú túrák: esettanulmány a Pannon Egyetem Zalaegerszegi Egyetemi Központ digitális ikerpár virtuális bejárásán Németh, Krisztián; Guzsvinecz, Tibor; Szűcs, Judit

11:00-12:00 - Poster session #2

12:00-13:30 - Lunch break

Kuba Attila and Csetverikov Dmitrij Prize Presentations (chair: Zoltan Kato)

Time Paper ID Title & Authors
14:00 17 LidPose: Real-Time 3D Human Pose Estimation in Sparse Lidar Point Clouds with Non-Repetitive Circular Scanning Pattern Kovács, Lóránt; Bódis, Balázs Márk; Csaba, Benedek
14:17 23 2D LiDAR térbeli kalibrációja henger segítségével Tófalvi, Tamás; Kovács, Bandó; Hajder, Levente
14:34 29 Directional Bounding Boxes for Oriented Object Detection Molnár, Szilárd; Tamas, Levente; Kato, Zoltan

14:51-15:30 - Kuba Attila and Csetverikov Dmitrij Prize Posters

15:30-15:50 - Coffee break

Session #3: Medical Imaging and Analysis (chair: Péter Horváth)

Time Paper ID Title & Authors
15:50 4 Adaptive Sampling for Single Scatter Estimation in PET Varnyú, Dóra; Szirmay-Kalos, Laszlo
15:55 5 Segmentation metric misinterpretations in bioimage analysis Hirling, Dominik; Péter, Horváth
16:00 10 Benchmarking Deep Learning Models for Tumor Region Detection: A Step Toward Multi-Domain Robust Solutions< Bolf, Márton; Hirling, Dominik; Iván, Zsanett; Péter, Horváth
16:05 13 Domain augmentációs technikák alkalmazása teszt időben, szövettani képekre Botond, Zsigri
16:10 41 SuperCUT, an unsupervised multimodal image registration with deep learning for biomedical microscopy István, Grexa

16:15-17:00 - Poster session #3

17:00-18:00 - Invited lecture: Zoltán Juhász - Zenei ősnyelvek nyomainak kutatása mai népzenei kultúrákban öntanuló algoritmusokkal

18:15-19:15 - Wine tasting (Somló Kincse)

19:45-21:30 - Dinner

Thursday

9:00-10:00 - Invited lecture: Giorgos Tolias - Visual representation and similarity for instance-level retrieval

10:00-10:30 - Coffee break

Session #4: Image Processing, Graphics, and Theoretical Foundations (chair: László Nyúl)

Time Paper ID Title & Authors
10:30 44 Szenzorfúziós módszerek összehasonlítása multispektrális érzékelővel ellátott légi platformon Tizedes, László; Tokarjev, Andrej; Keszler, Anita; Majdik, Andras
10:35 2 Sufficient Conditions for Topology-Preserving Parallel Reductions on the Face-Centered Cubic Grid Karai, Gábor; Kardos, Péter; Palagyi, Kalman
10:40 32 Pallet detection and 3D pose estimation via geometric cues learned from synthetic data Beleznai, Csaba; Reisinger, Lukas; Pointner, Wolfgang; Murschitz, Markus
10:45 34 Gradient-based Ellipse Fitting and 3D Circle Center Estimation Du, Xiaohe; Dániel, Baráth; Hajder, Levente
10:50 42 Worker and driver drowsiness and attention monitoring open-source framework from state-of-the-art components Jánoki, Imre; Zarándy, Ákos

11:00-12:00 - Poster session #4

12:00-13:30 - Lunch break

Session #5: Deep Learning for Computer Vision (chair: Tamás Szirányi)

Time Paper ID Title & Authors
14:00 30 Action Recognition in Video with Lightweight and Deeper (2+1)D ResNet Models Körmöczi, László; Nyúl, László
14:05 40 Augmentation Techniques in Digital Holography Terbe, Daniel; Zarandy, Akos; Bicsak, Barbara; Orzo, Laszlo
14:10 48 Continuous Simulation-to-Real Transfer with Diffusion Models Béres, András; Gyires-Tóth, Bálint
14:15 50 Deep Randomized Networks for Fast Learning Czúni, László; Rádli, Richárd
14:20 51 Word and Image Embeddings in Pill Recognition Czúni, László; Rádli, Richárd; Vörösházi, Zsolt

14:35-15:30 - Poster session #5

15:30-15:50 - Coffee break

Session #6: Robotics, Navigation, and SLAM (chair: András Majdik)

Time Paper ID Title & Authors
15:50 16 LiDAR pontfelhők optikai áramláson és expanzión alapuló időbeli felskálázása Rozsa, Zoltan; Szirányi, Tamás
15:55 21 Csapatok kooperatív vizuális-inerciális lokalizációja alaprajz kiemeléssel Gazdag, Sándor; Pásztornicky, Dániel; Jankó, Zsolt; Szirányi, Tamás; Majdik, András
16:00 24 Összefoglaló tanulmány a gépi tanulásalapú horizontvonal-becslő módszerekről Poór, Máté Bálint; Hajder, Levente; Sarosi, Andras
16:05 35 Robust Visual Localization in Large-Scale Environments Using Hierarchical Point Cloud Registration Józsa, Csaba; Bóta, Attila
16:10 37 Automatikus, tábla alapú LiDAR - kamera kalibráció Tokarjev, Andrej; Keszler, Anita

16:15-17:00 - Poster session #6

17:00-18:00 - NJSZT - KÉPAF meeting

18:15-19:15 - Award Ceremony and Concert (Hanga Kacsó - vocals and dance, Attila Mihó - violin, Endre Papp - viola, Viktor Pandák - bass, István Berecz - flute and dance): Transylvanian folk music and folk dance from Mezőség to Székelyföld, with a detour to Kalotaszeg

19:45-23:00 - Gala Dinner

Friday

9:00-10:00 - PhD Prize winner's presentation

10:00-10:30 - Coffee break

Session #7: Industrial Applications and Human-Robot Interaction (chair: Csaba Benedek)

Time Paper ID Title & Authors
10:30 28 Ember-Robot Kooperatív Robotcella Monitorozás: Hitelesítés és Gesztusvezérlés Sztereo Látással Kovács, Gábor
10:35 19 Improvements on rendering cross-sections of solids Fridvalszky, András; Szécsi, László; Szirmay-Kalos, Laszlo
10:40 27 AYANet: A Gabor Wavelet-based and CNN-based Double Encoder for Building Change Detection in Remote Sensing Osa, Priscilla; Zerubia, Josiane; Kato, Zoltan
10:45 33 Khalimsky-típusú megoldás a háromszögrács topológiai problémáira Nagy, Benedek
10:50 38 Stereo Hatching Render for Virtual Reality Applications Karpati, Attila; Karpati, Viktoria; Szécsi, László
10:55 45 Moment preserving tomographic image reconstruction model Lukic, Tibor; Balázs, Péter

11:00-12:00 - Poster session #7

12:00-13:30 - Lunch break

14:00-15:30 - Bath in Hévíz lake (optional)