Investigation of the Influence of Compressed-Domain DCT Coefficients on Image and Video Retrieval
Dong Hu · Journal of Nanjing Institute of Posts and Telecommunications · 2004
This paper discusses the segment decoding method of image and video compressed-domain based on DCT by analyzing the differences of image representation between original data domain and compressed-domain. We use the method in our implementation of MPEG4 coding and decoding program,and bring forward a fast arithmetic based on DC+2AC to raise the efficiency of compressed-domain image and video retrieval.