Delta Encoding in a Compressed Domain

Video Abstraction in H.264/AVC Compressed Domain

Video abstraction allows searching, browsing and evaluating videos only by accessing the useful contents. Most of the studies are using pixel domain, which requires the decoding process and needs more time and process consuming than compressed domain video abstraction. In this paper, we present a new video abstraction method in H.264/AVC compressed domain, AVAIF. The method is based on the norm...

Semantic-Based Image Retrial in the VQ Compressed Domain using Image Annotation Statistical Models

File System Support for Delta Compression

Delta compression, which consists of compactly encoding one file version as the result of changes to another, can improve efficiency in the use of network and disk resources. Delta compression techniques are readily available and can result in compression factors of five to ten on typical data, however managing delta-compressed storage is difficult. I present a system that attempts to isolate t...

Compressed Domain Scene Change Detection Based on Transform Units Distribution in High Efficiency Video Coding Standard

Scene change detection plays an important role in a number of video applications, including video indexing, searching, browsing, semantic features extraction, and, in general, pre-processing and post-processing operations. Several scene change detection methods have been proposed in different coding standards. Most of them use fixed thresholds for the similarity metrics to determine if there wa...

From compressed sensing to compressed bit-streams: practical encoders, tractable decoders

Compressed sensing is now established as an effective method for dimension reduction when the underlying signals are sparse or compressible with respect to some suitable basis or frame. One important, yet under-addressed problem regarding the compressive acquisition of analog signals is how to perform quantization. This is directly related to the important issues of how “compressed” compressed ...