- 3 professional tasks: compress 3 different test data sets, with 1 speed brackets for each test. Participants may compete in one or more categories.
- 1 student task: optimize a matrix transpose algorithm.
What is GDCC
The competition is for software engineers, researchers, students and enthusiasts in the field of lossless data compression. The contest includes several main categories open to anyone who meets the general requirements, as well as a special category for students. We test compressors under the following tasks and categories:
Professional tasks:
Open to all, industry challenges for leading experts (Task 1, 2 & 3)
In 2 categories
Student tasks:
Open to students, proof of student status required (Task 4)
In a single category
2024 prize winners of the fourth edition
Qualitative data
Quantitative data
Image data
Student
1 place
2 place
3 place
Rapid Compression
Catarina Nascimiento, piccolo
Alexandre, ODWEL
Douxiuxin, vspring
High Compression Ratio
Márcio Pais, vinyl
Emma, GOFU
Mathieu Chartier, bongohcr
1 place
2 place
3 place
Rapid Compression
Jacek Wawrzaszek, JWT2R
Mathieu Chartier, penguin
Pavel Zagrebin, SCARLET
High Compression Ratio
Peter Thamm, Honeyguide
Christoph Feck, mainzHCR
Márcio Pais, axeon
1 place
2 place
3 place
Rapid Compression
Peter Thamm, JOTWAL2
Christoph Feck, jenaByCFeck
David Blasco, testest
High Compression Ratio
Douxiuxin, TangDynasty
Raimi Wang, Twater
Hartatik, kana
1 place
2 place
3 place
4-8 place
David Blasco, dablan
Michal Dobranowski, Quenst
Bànyai Endre, trance
Jose Antonio Miranda, JAMScodec
Caleb Asira Etemesi, ihwip
Pau Domínguez, QuickTransposer
Ramon Gallinad, BearAlg
Sergio Villar, Lander
Caleb Asira Etemesi, ihwip
Pau Domínguez, QuickTransposer
Ramon Gallinad, BearAlg
Sergio Villar, Lander
Main Rules
CATEGORIES
Awards & PRIZES
• 6,000 EUR, 4,000 EUR, and 1,000 EUR awards for first, second, and third places, respectively, in 3 professional tasks.
• 5,000 EUR, 3,000 EUR, and 1,000 EUR awards for first, second, and third place, respectively, in 1 student task.
• 500 EUR award each for places 4–8 in the student task.
SCHEDULE
• Submit compressors beginning December 2024 to join the leaderboards.
• Compressor submissions must be executable files working on a provided virtual machine.
• Leaderboards updated every 2 days (depending on demand).
• Deadline for new and updated submissions is April 15, 2025.
• Results to be announced by May 15, 2025.
• Prizes awarded in accordance with the final leaderboards.
COMPRESSORS
- In all tests, the data we use for scoring is private.
- We provide sample data, or training data, that is of the same nature and similar to, yet different from, the private test set.
- We accept binary submissions; source codes are unnecessary unless required by library or software-block licenses on which the submitted compressor is based.
Schedule
-
December 2024
Beginning of submissions.
-
December 2024 - April 2025
Intermediate results will be published at least every 2 days (depending on demand).
-
April 15, 2025
End of submissions.
-
May 15, 2025
Announcement of winners.
BOARD OF EXPERTS OF 3TH EDITION OF THE GLOBAL DATA COMPRESSION COMPETITION (2023)
Professor Wen Gao, Peking University, China.
Boya Chair Professor and Director of Faculty of Information and Engineering Sciences at Peking University (China). Served as Vice president of National Natural Science Foundation China (NSFC) and president of China Computer Federation (CCF). Deputy Director of China National Standardization Technical Committees. He works in the areas of multimedia and computer vision, including video coding, video analysis, multimedia retrieval, face recognition, and multimodal interface.
Professor Shmuel Tomi Klein, Bar Ilan University, Israel.
Professor at Bar Ilan University (Israel). His research interests are Lossless Data Compression, Information Storage and Retrieval, Text Algorithms, and Computational Linguistics.
Professor Michael W. Marcellin, University of Arizona, USA.
Regents Professor, Faculty Fellow, and Honors Professor at University of Arizona (United States of America). His research interests are Digital Communication and Data Storage Systems, Data Compression, and Signal Processing.
Professor. Dmitry Vatolin, Lomonosov Moscow State University, Russia.
Head of ML/DL video processing, compression, and quality research lab at Lomonosov Moscow State University (Russia). His research interests are video and image processing and compression, and multimedia data processing.
Professor Gonzalo Navarro, Universidad de Chile, Chile.
Professor at University of Chile (Chile). His research interests are Design and analysis of algorithms and data structures, Compressed data structures, Text databases, Information retrieval, and Metric databases.
ORGANIZERS OF 4TH EDITION OF THE GLOBAL DATA COMPRESSION COMPETITION
Professor Serra Sagristà, Universitat Autònoma de Barcelona, Spain.
Joan Serra-Sagristà received the Ph.D. degree in computer science from Universitat Autònoma Barcelona (UAB), Spain, in 1999. He is currently a Full Professor at Department of Information and Communications Engineering, UAB. He is the Head of the Group on Interactive Coding of Images (GICI) since 2003 and the Head of the Department since 2018. From September 1997 to December 1998, he was at University of Bonn, Germany, funded by German Academic Exchange Service (DAAD) and by Catalan Savings Bank "La Caixa". His current research interests focus on source coding / data compression, with special attention to data coding for remote sensing applications. He serves or has served as Senior Area Editor for IEEE Trans. on Image Processing, as Associate Editor for IEEE Trans. on Geoscience and Remote Sensing, IEEE Trans. on Image Processing, SPIE Journal of Electronic Imaging, among others, and as Program Committee co-chair for IEEE Data Compression Conference, among others. He has co-authored over 150 publications. He was the recipient of the Spanish Intensification Young Investigator Award in 2006.
Associate Professor Bartrina Rapesta, Universitat Autònoma de Barcelona, Spain
Joan Bartrina-Rapesta received the B.Sc., B.E., M.S., and Ph.D. degrees in computer science from the Universitat Autònoma de Barcelona (UAB), Spain, in 2002, 2004, 2006, and 2009, respectively. He obtains his M.S. and Ph.D. degree with highest honors from UAB. He was awarded with a doctoral fellowship from UAB. He participates as a reviewer for magazines and symposiums, has co-authored numerous papers in journals and conferences, and has guided Ph.D. students. From 2012 to present, he holds an associate professor position with the Department of Information and Communications Engineering in the UAB. His research interests include a wide range of image coding topics, computing, and transmission.
PhD Student Fernández Mellado, Universitat Autònoma de Barcelona, Spain.
Xavier Fernández-Mellado received the B.E. and M.S. degrees in computer science and telecomunications from the Universitat Autònoma de Barcelona (UAB), Spain, in 2023 and 2024, respectively. He is currently a PhD candidate in the Group of Interactive Coding of Images (GICI) at UAB, focusing on advanced research in image compression. He has contributed as a technical engineer at the Institut d'Estudis Espacials de Catalunya (IEEC) and is the co-author of two conference papers on innovative developments in the field.
PhD Student Quintas Torra, Universitat Autònoma de Barcelona, Spain
Pau Quintas-Torra received the B.E. and M.S. degrees in computer science from the Universitat Autònoma de Barcelona (UAB), Spain, in 2023 and 2024, respectively. He is currently a PhD candidate in the Group of Interactive Coding of Images (GICI) at UAB, focusing on advanced research in image compression. He has contributed as a technical engineer at the Institut d'Estudis Espacials de Catalunya (IEEC) and is the co-author of two conference papers on innovative developments in the field.
Category Awards
Qualitative Data
Quantitative Data
Image Data
Fast Row-Column exchange
First place
6,000 EUR
Second place
4,000 EUR
Third place
1,000 EUR
First place
6,000 EUR
Second place
4,000 EUR
Third place
1,000 EUR
First place
6,000 EUR
Second place
4,000 EUR
Third place
1,000 EUR
First place
5,000 EUR
Second place
3,000 EUR
Third place
1,000 EUR
Next five places
500 EUR
The 4th Edition of GDCC is brought to you by
Group on Interactive Coding of Images
DATA STORAGE Product Line
2023 Contest
results
177,000 eur
total prize fund
8
competition categories by data type and processing speed
400+
applications
40
universal and image compressors
12-25%
better compression ratio than for popular reference
compressors for certain categories
Strong results in all categories
See more about previous contests
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