Patent ID: 10805642

Abstract:
To reduce picture quality deterioration and improve coding efficiency when image coding processing and image decoding processing involving deblocking filter processing are performed.The present invention relates to an image transmission system including an image coding apparatus and an image decoding apparatus. The image coding apparatus of the present invention performs coding processing on a target picture in units of blocks and performs filter processing on a picture generated during coding processing by using a filter unit configured to perform filter processing using at least a deblocking filter. Further, the image decoding apparatus of the present invention decodes a target picture in units of blocks and performs filter processing on a picture generated during decoding processing by using a filter unit configured to perform filter processing using at least a deblocking filter. In addition, the deblocking filter determines a type of each block edge of the target picture, selects filter coefficients depending on the type of each block edge of the target picture from filter coefficient sets and applies the selected filter coefficients.