Patent ID: 8923642

Claim:
An image processing device, comprising: circuitry configured to: perform class classification of an image into a smooth region class and an edge or texture class, for each predetermined block, using edge information of said predetermined block as baseband information of pixel values configuring said predetermined block, the edge information indicating edge strength of said predetermined block; and perform filter processing as to said predetermined blocks subjected to said class classification by said circuitry, using filter coefficients calculated using said predetermined blocks class-classified into same classes, wherein in the event that the edge strength of said predetermined block exceeds a predetermined threshold value, said circuitry performs class classification of said predetermined block into said edge or texture class, in the event that the edge strength of said predetermined block does not exceed said predetermined threshold value, said circuitry performs class classification of said predetermined block into said smooth region class, and said circuitry is configured to set said predetermined threshold value in accordance with a quantization parameter in said predetermined block so that said predetermined threshold value is set lower as said quantization parameter is higher.