A DCT-Domain Video Transcoder for Spatial Resolution Downconversion
VISUAL '02 Proceedings of the 5th International Conference on Recent Advances in Visual Information Systems
Semantic video adaptation based on automatic annotation of sport videos
Proceedings of the 6th ACM SIGMM international workshop on Multimedia information retrieval
Adaptive video transcoding and streaming over wireless channels
Journal of Systems and Software - Special issue: Adaptive multimedia computing
An Integrated Framework for Semantic Annotation and Adaptation
Multimedia Tools and Applications
Limitations of special-purpose instructions for similarity measurements in media SIMD extensions
CASES '06 Proceedings of the 2006 international conference on Compilers, architecture and synthesis for embedded systems
Very low complexity MPEG-2 to H.264 transcoding using machine learning
MULTIMEDIA '06 Proceedings of the 14th annual ACM international conference on Multimedia
A Flexible Content Adaptation System Using a Rule-Based Approach
IEEE Transactions on Knowledge and Data Engineering
RaDiO edge: rate-distortion optimized proxy-driven streaming from the network edge
IEEE/ACM Transactions on Networking (TON)
Efficient video transcoding from H.263 to H.264/AVC standard with enhanced rate control
EURASIP Journal on Applied Signal Processing
Effective algorithms for fast transcoding of AVS to H.264/AVC in the spatial domain
Multimedia Tools and Applications
Efficient hybrid DCT-domain algorithm for video spatial downscaling
EURASIP Journal on Advances in Signal Processing
Journal on Image and Video Processing
Image retrieval: Ideas, influences, and trends of the new age
ACM Computing Surveys (CSUR)
Simple intra prediction algorithms for heterogeneous MPEG-2/H.264 video transcoders
Multimedia Tools and Applications
Versatility of extended subwords and the matrix register file
ACM Transactions on Architecture and Code Optimization (TACO)
A fast MPEG-2 to H.264 downscaling transcoder
ISCGAV'08 Proceedings of the 8th conference on Signal processing, computational geometry and artificial vision
Video encoding and transcoding using machine learning
Proceedings of the 9th International Workshop on Multimedia Data Mining: held in conjunction with the ACM SIGKDD 2008
On modeling and evaluating multicomputer transcoding architectures for live-video streams
Multimedia Tools and Applications
Video transcoding from H.264/AVC to MPEG-2 with reduced computational complexity
Image Communication
An efficient mode selection prior to the actual encoding for H.264/AVC encoder
IEEE Transactions on Multimedia
International Journal of Modelling and Simulation
Content-aware error-resilient transcoding using prioritized intra-refresh for video streaming
Journal of Visual Communication and Image Representation
Foveation embedded DCT domain video transcoding
Journal of Visual Communication and Image Representation
Video coding focusing on block partitioning and occlusion
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Motion information exploitation in H.264 frame skipping transcoding
ACIVS'07 Proceedings of the 9th international conference on Advanced concepts for intelligent vision systems
Parabolic Motion-Vector Re-estimation Algorithm for Compressed Video Downscaling
Journal of Signal Processing Systems
An efficient compressed domain spatial transcoding scheme for adaptive video content delivery
PCM'10 Proceedings of the Advances in multimedia information processing, and 11th Pacific Rim conference on Multimedia: Part II
Algorithms for video retargeting
Multimedia Tools and Applications
A novel approach for improving the quality of service for wireless video transcoding
Journal of Mobile Multimedia
Adaptation of multimedia resources supported by metadata
Journal of Web Engineering
Reducing spatial resolution for MPEG-2 to H.264/AVC transcoding
PCM'05 Proceedings of the 6th Pacific-Rim conference on Advances in Multimedia Information Processing - Volume Part II
Effective drift reduction technique for reduced bit-rate video adaptation
PCM'04 Proceedings of the 5th Pacific Rim conference on Advances in Multimedia Information Processing - Volume Part III
A Low Cost Architecture for Variable Block Size Motion Estimation
Journal of Signal Processing Systems
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In this work, transcoding of pre-encoded MPEG-1, 2 video into lower bit rates is realized through altering the coding algorithm into H.261/H.263 standards with lower spatio-temporal resolutions. For this heterogeneous transcoding, we extract and compose a set of candidate motion vectors, from the incoming bit stream, to comply with the encoding format of the output bit stream. For the spatial resolution reduction we generate one motion vector out of a set of input motion vectors operating on the higher spatial resolution image. Finally, for the temporal resolution reduction we compose new motion vectors from the dropped frames motion vectors. Throughout the paper, we discuss the impact of motion estimation refinement on the new motion vectors and show that for all cases a simple half-pixel refinement is sufficient for near-optimum results