IMAGE PROCESSING DEVICE AND METHOD

摘要

Provided are image processing device and method capable of preventing the reduction of a coding efficiency. A decoded pixel classification unit (152) and an input pixel classification unit (153) classify each macro block of a decoded image or input image on the basis of an orthogonal transformation size read from an orthogonal transformation size buffer (151). A 4 × 4 block coefficient calculation unit (154) and an 8 × 8 block coefficient calculation unit (155) calculate filter coefficients so that the residual errors become minimum in respective orthogonal transformation blocks. A pixel classification unit (161) in a loop filter (113) classifies each macro block of a decoded image on the basis of the orthogonal transformation size thereof. A filter unit (4 × 4) (162) and a filter unit (8 × 8) (163) apply appropriate filter coefficients to the respective corresponding orthogonal transformation blocks and perform filter processing. The invention can be applied to, for example, an image processing device.