VIDEO COMPRESSION ENCODING/DECOMPRESSION DEVICE, VIDEO COMPRESSION ENCODING/DECOMPRESSION PROGRAM, AND VIDEO GENERATING/OUTPUT DEVICE

摘要

In a high-definition and high-efficiency video compression/decompression technique in a video system environment with the transmission capacity of data restricted like a vehicle video system, high-definition and high-efficiency compression and decompression are realized only by the addition of a small scale circuit with respect to both of an image including a texture pattern and an image not including the texture pattern. When a periodic pattern is not included in image data (210), a prediction error encoding section (204) outputs a variable-length code of a prediction error quantization value (214) generated by prediction encoding as compressed data (215). When the periodic pattern is included in the image data (210), a periodic pattern encoding section (208) outputs only information on the periodic pattern as the compressed data (215), while the output of the prediction error encoding section (204) is stopped. On the decompression side, while the copy instruction of the pixel value prior to one period from the compressed data is not detected, the decompression operation in a normal prediction encoding system is executed. When the instruction is detected, the pixel value prior to one period internally held is copied and outputted.