EVOLUTIVE METHODS AND ENCODING / DECODING APPARATUS FOR FIXED IMAGE CREATION USING WAVELET TRANSFORMATION

摘要

This invention relates to methods for scalable encoding and decoding of still images and apparatus therefor, wherein the shape information is scalable encoded and decoded by frame scan line methods. interlaced (ISL) and raster scan line (RSL), for use in encoding the texture information, the shape information of a chrominance component (UV) being encoded to compensate for the component of chrominance (UV) in the encoding phase, a large input image being divided into blocks of uniform size, the encoding form being independently applied to the shape and texture component of each split block. It is thus possible to efficiently encode pixels by reducing the number of pixels to be encoded by using the characteristics between the ISL pixels in a shape of the layer to be encoded, or by using pixels located between two layers in the encoding of the pixel. shape information between the respective layers, thereby sequentially restoring the shape and texture information of the still image, performing the scalable encoding through the resolution of an image. The invention is particularly applicable to the high speed search of an image in a large capacity database. In addition, the encoder using the mosaic operation of the present invention can be effectively applied to a large image that is difficult to fully restore at one time, by restoring the desired portions of the image independently. / P