Strong Edge Features for Image Coding
نویسندگان
چکیده
A two-component model is proposed for perceptual image coding. For the rst component of the model, the watershed operator is used to detect strong edge features. Then, an eecient morphological interpolation algorithm reconstructs the smooth areas of the image from the extracted edge information, also known as sketch data. The residual component, containing ne textures, is separately coded by a subband coding scheme. The morphological operators involved in the coding of the primary component perform very eeciently compared to conventional techniques like the LGO operator, used for the edge extraction, or the diiusion lters, iteratively applied for the interpolation of smooth areas in previously reported sketch-based coding schemes.
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