Direct Feature Extraction from Compressed Images

@inproceedings{Shen1996DirectFE,
  title={Direct Feature Extraction from Compressed Images},
  author={Bo Shen and Ishwar K. Sethi},
  booktitle={Storage and Retrieval for Image and Video Databases},
  year={1996}
}
This paper examines the issue of direct extraction of low level features from compressed images. Specifically, we consider the detection of areas of interest and edges in images compressed using the discrete cosine transform (DCT). For interest areas, we show how a measure based on certain DCT coefficients of a block can provide an indication of underlying activity. For edges, we show using an ideal edge model how the relative values of different DCT coefficients of a block can be used to… CONTINUE READING
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