METHOD AND DEVICE FOR DECODING IMAGE

摘要

PROBLEM TO BE SOLVED: To remove block noise and mosquito noise, while minimizing image blur when a compressed and encoded image is decoded. SOLUTION: A block noise detecting means 117 specifies a block border where block noise is generated by using information on a DCT coefficient, etc. A block noise removing means 116 removes the block noise from a differential image, after inverse DCT according to the detection result of the block noise detecting means 117. A movement compensating means 121 generates a decoded image by adding the output of the block noise removing means 116 to a reference image stored in a frame memory 115.