Samsung Research America, USA
Email: a.saxena1 at samsung.com ; ankur at ece.ucsb.edu
Intro
I am at Samsung Research Labs in Richardson, Texas. Earlier, I completed my PhD from the ECE department at the University of California-Santa Barbara (UCSB). My PhD advisor was Prof Kenneth Rose and I was affiliated with the Signal Compression Laboratory while at UCSB.
I did my B.Tech from Indian Institute of Technology (IIT) -Delhi in 2003. During my PhD, I interned at NTT Docomo Labs, Palo Alto while I interned at Fraunhofer Labs, Erlangen, Germany in my undergraduate days.
Research Highlights
My research interests are communication, signal and processing and computer vision. I have worked in the areas of video and image compression, distributed source coding, signal processing for sensor networks, video fingerprinting, and image search.
I have represented Samsung as an official delegate at ITU-T and ISO MPEG: HEVC video standardization and CDVS meetings, and have worked extensively on various algorithms for HEVC and CDVS standards.
My work on transform coding: on DCT/DST technology was adopted in HEVC Standardization.The proposed DST Type-7 is the only transform other than the conventional DCT in the HEVC video coding standard.
I also received the Samsung Best Paper Award for the year 2011. The competition had 1043 submissions in different fields from various Samsung Offices throughout the world. I also received Prolific Author of the year award for the year 2013 at Samsung Research America, Dallas.
I am also a co-inventor of secondary transforms which can be applied after DCT for both intra and inter residues. The secondary transforms is part of the China AVS 2.0 video coding standard. I have also worked on video fingerprinting, and am currently exploring various aspects of visual search in the CDVS standardization project.
At UCSB, my PhD thesis was on 'Distributed coding of spatio-temporally correlated sources' (Defense slides). It focuses on solving the following three major problems in distributed coding (Detailed description is available here while a very brief one paragraph summary is available here).
For part of my PhD work in ICASSP 2009, I was a Finalist in the Student Best Paper contest at ICASSP 2009. I also recently was a co-author of a top 10% paper at IEEE ICIP 2014.
Publications
Journal Articles
7. Error/Erasure-Resilient and Complexity-Constrained Zero-Delay Distributed Coding for Large Scale Sensor Networks, K. Viswanatha, S. Ramaswamy, A. Saxena and K. Rose, to appear in ACM Transactions on Sensor Networks (TOSN), 2014.
6. DCT/DST- based transform coding for intra prediction in image/video coding, A. Saxena and F. Fernandes, IEEE Transactions on Image Processing, October 2013.
5. Low-latency secondary transforms for intra/inter prediction residual, A. Saxena and F. Fernandes, IEEE Transactions on Image Processing, October 2013.
4. Jointly optimized spatial prediction and block transform for video and image coding, J. Han, A. Saxena, V. Melkote and K. Rose, IEEE Transactions on Image Processing, April 2012.
3. On scalable distributed coding of correlated sources, A. Saxena and K. Rose, IEEE Transactions on Signal Processing, May 2010.
2. Robust distributed source coder design by deterministic annealing, A. Saxena, J. Nayak and K. Rose, IEEE Transactions on Signal Processing, Feb 2010.
1. Distributed predictive coding for spatio-temporally correlated sources, A. Saxena and K. Rose, IEEE Transactions on Signal Processing, Oct 2009.
Journal Manuscripts under Review
8. On large scale distributed compression and dispersive information routing for networks: Part 1, K. Viswanatha, S. Ramaswamy, A. Saxena, E. Akyol and K. Rose.
9. On large scale distributed compression and dispersive information routing for networks: Part 2, K. Viswanatha, S. Ramaswamy, A. Saxena, E. Akyol and K. Rose.
10. Nearest-Neighbor Intra Prediction for Screen Content Video Coding, H. Chen, A. Saxena and F. Fernandes.
Conference Proceedings
(Last Updated: Sept 2014.)
24.Nearest-neighbor intra prediction for screen content video coding, H. Chen, A. Saxena and F. Fernandes, to appear in IEEE International Conference on Image Processing (ICIP), Paris, France, Oct 2014. Top 10% Paper Recognition at ICIP.
23. On prediction techniques for palette coding, G. Jin, A. Saxena, and F. Fernandes, to appear in IEEE International Conference on Image Processing (ICIP), Paris, France, Oct 2014.
22. Fast secondary transforms for scalable video coding, A. Saxena and F. Fernandes, IEEE Picture Coding Symposium (PCS), Dec 2013.
21. On secondary transforms for scalable video coding, A. Saxena and F. Fernandes, IEEE Visual Communications and Image Processing (VCIP), Nov 2013.
20. Mid-Level Feature Based Local Descriptor Selection for Image Search, S. Bucak, A. Saxena, A. Nagar, F. Fernandes, K-P. Bhat, IEEE Visual Communications and Image Processing (VCIP) workshop, Nov 2013 (Invited Paper).
19. Low complexity image matching using color based SIFT, Abhishek Nagar, Ankur Saxena, Serhat Bucak, Felix Fernandes, Kong-Posh Bhat, IEEE Visual Communications and Image Processing (VCIP) workshop, Nov 2013 (Invited Paper).
18. Fast transforms for intra-prediction based image and video coding, A. Saxena, F. Fernandes and Y. Reznik, IEEE Data Compression Conference (DCC), Snowbird, USA, March 2013.
17. On secondary transforms for prediction residual, A. Saxena and F. Fernandes, IEEE International Conference on Image Processing (ICIP), Florida, USA, Oct 2012.
16. Error-Resilient and Complexity-Constrained Distributed Coding for Large Scale Sensor Networks, K. Viswanatha, S. Ramaswamy, A. Saxena and K. Rose, ACM/ IEEE Conference on Information Processing in Sensor Networks, Beijing, China, April 2012 (22 papers accepted out of 147 submissions).
15. On secondary transforms for intra prediction residual, A. Saxena and F. Fernandes, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Kyoto, Japan, March 2012.
14. Perceptual similarity based robust low-complexity video fingerprinting, K. Vadivel, F. Fernandes, Z. Ma, P. Lai and A. Saxena, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),Kyoto, Japan, March 2012.
13. Mode Dependent DCT/DST for Intra Prediction in Block-Based Image/Video Coding, A. Saxena and F. Fernandes, IEEE International Conference on Image Processing (ICIP), Brussels, Belgium, Sept 2011.
12. A classifier based decoding approach for large scale distributed coding, K. Viswanatha, S. Ramaswamy, A. Saxena and K. Rose, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),Prague, Czech Republic, May 2011.
11. Towards jointly optimal spatial prediction and adaptive transform in video/image coding, J. Han, A. Saxena, V. Melkote and K. Rose, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Dallas, USA, March 2010.
10. Towards large scale distributed coding, S. Ramaswamy, K. Viswanatha, A. Saxena and K. Rose, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Dallas, USA, March 2010.
9. Scalable distributed source coding, A. Saxena and K. Rose, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP),Taipei, Taiwan, April 2009, Best Student Paper Finalist (Amongst Top 15 student papers at ICASSP).
8. Optimization of correlated source coding for event-based compression in sensor networks, J. Singh, A. Saxena, K. Rose and U. Madhow, IEEE Data Compression Conference(DCC), Snowbird, USA, March 2009.
7. On optimal royalty costs for video compression, A. Saxena, O. Guleryuz and R. Civanlar, IEEE International Conference on Image Processing (ICIP),San Diego USA, Oct 2008.
6. On distributed quantization in scalable and predictive coding, A. Saxena and K. Rose, Proc. Sensor, Signal and Information Processing (SENSIP), Sedona, USA, May 2008.
5. Distributed multi-stage coding of correlated sources, A. Saxena and K. Rose, IEEE Data Compression Conference (DCC), Snowbird, USA, March 2008.
4. Challenges and recent advances in distributed predictive coding, A. Saxena and K. Rose (Invited Paper), IEEE Information Theory Workshop (ITW), Lake Tahoe, California, USA, Sept 2007.
3. Distributed predictive coding for spatio-temporally correlated sources, A. Saxena and K. Rose, IEEE International Symposium on Information Theory (ISIT), Nice, France, June 2007.
2. A global approach to joint quantizer design for distributed coding of correlated sources, A. Saxena, J. Nayak and K. Rose, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Toulouse, France, May 2006.
1. On efficient quantizer design for robust distributed source coding, A. Saxena, J. Nayak and K. Rose, IEEE Data Compression Conference (DCC), Snowbird, USA, March 2006.
Others (Oral Conference Presentations Only)
25. Towards large scale distributed coding of correlated sources, S. Ramaswamy, K. Viswanatha, A. Saxena and K. Rose, Southern California Workshop on Distributed Multimedia Systems, Los Angeles, USA, 2009.
26. On distributed and scalable quantization of correlated sources, A. Saxena and K. Rose, Southern California Workshop on Distributed Multimedia Systems, Los Angeles, USA, 2009.
Standard Contributions
(All the following contributions are for Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization)
Last Updated: Jan 2014.
38. Palette prediction for palette coding, G. Jin, A. Saxena, F. Fernandes, San Jose, USA, Jan 2014.
37. Simplification of major color based palette prediction, G. Jin, A. Saxena, F. Fernandes, San Jose, USA, Jan 2014.
36. Summary report of HEVC Range Extensions Core Experiments 4 (RCE4) on palette coding for screen content, X. Guo, A. Saxena, San Jose, USA, Jan 2014
35. On intra block copy motion vector coding, G. Jin, A. Saxena, F. Fernandes,
34. On transform selection for Intra-BlockCopy blocks A. Saxena, E. Alshina, F. Fernandes, Geneva, Switzerland, October 2013.
33. Combination of sample adaptive prediction and nearest neighbor prediction for oblique modes, A. Saxena, H. Chen, F. Fernandes, Geneva, Switzerland, October 2013.
32. Nearest-neighbor intra prediction for screen content video coding, H. Chen, A. Saxena, F. Fernandes, Geneva, Switzerland, October 2013.
31. HEVC Range Extensions Core Experiment 4 (RCE 4): Palette Coding For Screen Content L. Guo, X. Guo, A. Saxena, Geneva, Switzerland, October 2013.
30. Summary report of HEVC Range Extensions Core Experiment 3 on Intra Prediction techniques, A. Saxena, D. Kwon, M. Naccari, C. Pang, Geneva, Switzerland, October 2013.
29. On sample adaptive intra prediction for oblique modes in lossless coding, H. Chen, A. Saxena and F. Fernandes, Vienna, Austria, July 2013.
28. On sample adaptive intra prediction for oblique modes in lossy coding, A. Saxena, H. Chen and F. Fernandes, Vienna, Austria, July 2013.
27. Enhanced angular intra prediction for screen content coding, H. Chen, A. Saxena and F. Fernandes, Vienna, Austria, July 2013.
26. HEVC Range Extensions Core Experiment 3 (RCE3): Intra Prediction techniques, A. Saxena, D. Kwon, M. Naccari, C. Pang, Vienna, Austria, July 2013.
25. On secondary transforms for Intra_BL residue, A. Saxena and F. Fernandes, Incheon, Korea, April 2013.
24. On estimation theoretic prediction for enhancement layer residual in scalable video coding, A. Saxena and F. Fernandes, Geneva, Switzerland, Jan 2013
23. Summary Report of Tool Experiment on Combined Prediction in SHVC, X. Li, E. François, P. Lai, D.-K. Kwon, A. Saxena, Geneva, Switzerland, Jan 2013
22. Description of Core Experiment 1: Intra Prediction Improvements in SHVC, A. Tabatabai, K. Rapaka, A. Saxena, S. Liu, Geneva, Switzerland, Jan 2013
21. Description of Core Experiment 3: Combined Inter and Inter-Layer Prediction in SHVC, X. Li, E. Francois, P. Lai, D. Kwon, A. Saxena, Geneva, Switzerland, Jan 2013.
20. Description of Tool Experiment B3: Combined Prediction in SHVC, X. Li, E. Francois, P. Lai, D. Kwon, A. Saxena, Shanghai, China, Oct 2012.
19. Summary report of core experiment on intra transform mode dependency simplifications, K. Ugur and A. Saxena, Stockholm, Sweden, July 2012.
18. Break out Group: CE1 visual test report, K. Ugur and A. Saxena, Stockholm, Sweden, July 2012.
17. Description of Core Experiment 1 (CE1): Intra transform mode dependency simplifications, K. Ugur and A. Saxena, Geneva, Switzerland, May 2012.
16. On secondary transforms for intra/inter prediction residual, A. Saxena and F. Fernandes, Geneva, Switzerland, May 2012.
15. Recent results for secondary transforms for intra/inter prediction residual, A. Saxena, Y. Shibahara, E. Alshina, F. Fernandes and T. Nishi, San Jose, USA, Feb 2012.
14. Summary Report of Core Experiment on Transform Skipping, M. Mrak, J. Sole, J. Xu and A. Saxena, San Jose, USA, Feb 2012.
13. On secondary transforms for intra prediction residual, A. Saxena, Y. Shibahara, F. Fernandes and T. Nishi, San Jose, USA, Feb 2012.
12. On secondary transforms for inter prediction residual, A. Saxena, Y. Shibahara, F. Fernandes and T. Nishi, San Jose, USA, Feb 2012.
11. Harmonization of SDIP and mode-dependent secondary transforms, A. Saxena, Y. Shibahara, F. Fernandes and T. Nishi, Geneva, Switzerland, Nov 2011.
10. On secondary transforms for inter prediction residual, A. Saxena and F. Fernandes, Geneva, Switzerland, Nov 2011.
9. Description of core experiment 5 (CE5): Transform Skipping, M. Mrak, J. Sole, J. Xu, A. Saxena, Geneva, Switzerland, Nov 2011.
8. On secondary transforms for intra prediction residual, A. Saxena and F. Fernandes, Torino, Italy, July 2011.
7. Mode-Dependent DCT/DST for 4x4 Chroma Blocks, A. Saxena, F. Fernandes, E. Alshina and J. Chen, Torino, Italy, July 2011.
6. On fast implementation of 4-point DST Type-7 with 5 multiplications, A. Saxena and F. Fernandes, Torino, Italy, July 2011.
5. Mode-Dependent 8x8 DCT/DST for Intra Prediction, A. Saxena and F. Fernandes, Torino, Italy, July 2011.
4. Mode-dependent DCT/DST without 4*4 full matrix multiplication for intra prediction, A. Saxena and F. Fernandes, Geneva, Switzerland, March 2011.
3. Experimental results of Rotational Transforms (ROT), E. Alshina, A. Alshin, F. Fernandes, A. Saxena, V. Seregin, Z. Ma, W. J. Han, Geneva, Switzerland, March 2011.
2. Mode-dependent DCT/DST for intra prediction in video coding, A. Saxena and F. Fernandes, Daegu, Korea, Jan 2011.
1. Jointly optimal intra prediction and adaptive primary transform, A. Saxena and F. Fernandes, Guangzhou, China, Oct 2010.
(The following contributions are for MPEG Compact Descriptors for Visual Search (CDVS) standardization)
6. SKIP Mode - Reconstructing Global Descriptor from Local Descriptors at Server End, A. Nagar, X. Xin, Z. Ma, Z. Li, G. Srivastava, A. Saxena, Y. Lim, F. Fernandes, K. Bhat, MPEG CDVS, Geneva, Switzerland, Jan 2013.
5. Improvements to global descriptors using higher order moments, G. Srivastava, A. Saxena, A. Nagar, S. Bucak and F. Fernandes, MPEG CDVS, Shanghai, China, October 2012.
4. Improved method for image search from local descriptors with visual meaning score, S. Bucak, A. Saxena, A. Nagar, G. Srivastava, F. Fernandes, K. Bhat, MPEG CDVS, Shanghai, China, October 2012.
3. Incremental Query Processing with a Holistic Feature Feedbacks, Z.Li, A. Saxena, A. Nagar, G. Srivastava, K. Bhat, MPEG CDVS, Shanghai, China, October 2012.
2. Using color information in local descriptors, A. Nagar, A. Saxena, S. Bucak, F. Fernandes, K. Bhat, MPEG CDVS, Stockholm, Sweden, July 2012.
1. Descriptor Extraction and Matching using Visual Attention Region for CDVS, L. Cheok, J. Song, K. Park and A. Saxena, MPEG CDVS, Geneva, Switzerland, May 2012.
Professional Activities
Reviewer for:
IEEE Transactions on Communication
IEEE Transactions on Wireless Communications
IEEE Transactions on Circuits, Systems and Vehicular Technology
IEEE Transactions on Image Processing
IEEE Transactions on Multimedia
Springer Signal, Image and Video Processing Journal
Eurasip Journal on Advances in Signal Processing, and numerous other conferences : IEEE MMSP, IEEE ICIP, IEEE ISIT, IEEE ICASSP, IEEE IPSN, IEEE PCS, IEEE VCIP.
Coordinator for Core Experiment 5 on Transform Skipping of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization in (Nov 2011-Feb 2012).
Coordinator for Core Experiment 1 on intra transform mode dependency simplifications of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization (May-July 2012).
Coordinator for Core Experiment 7 on feature point selection of the Compact Descriptors for Visual Search (CDVS) standardization in MPEG (July 2012 - October 2012)
Coordinator for Core Experiment 3 on inter-layer prediction techniques for scalable extensions of HEVC of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization (October 2012 - April 2013).
Coordinator for Core Experiment 3 on intra prediction improvement techniques for scalable extensions of HEVC of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization (January 2013 - April 2013).
Coordinator for Core Experiment 3 on intra prediction techniques for range extensions of HEVC of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization (July 2013 - October 2013).
Coordinator for Core Experiment 4 on palette coding techniques for range extensions of HEVC of the Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 for the HEVC video coding standardization (October 2013 - Jan 2014).
Membership: IEEE, IEEE Signal Processing Society, MPEG, JCTVC.