Patent ID: 6904096

Claim:
A video data processing device comprising: a degree of coding difficulty computing means for computing the degree of coding difficulty from the input video data comprising a motion compensation remaining difference computing means for computing a motion compensation remaining difference and computing the degree of coding difficulty on the basis of the motion compensation remaining difference; the motion compensation remaining difference being computed as a difference between a V-filtered and motion compensated block of the input video data and an original corresponding block of the input video data; a filtering means for adaptively filtering said input video data using a transfer function on the basis of the degree of coding difficulty computed from said input data; a compression-coding means for compression-coding said input and filtered video data; a decoding means for decoding said compression-coded video data; a degree of coding difficulty computing means for computing the degree of coding difficulty from said decoded video data; and an image quality correcting means for adaptively correcting the image quality of said decoded video data using a transfer function on the basis of the degree of coding difficulty computed from said decoded video data.