1991 年 15 巻 40 号 p. 13-18
This paper describes an image coding method combined with moving object detection, motion compensation by mapping, and orthogonal transform for arbitrary shapes. This method does not use grid shape block division, therefore there is no grid shape block distortion. Because uncontinuous parts in the inverse transformed signal by the arbitrary shape transform appear on the edges of the segmented objects, this type of distortion is hardly perceived. Consequently, this coding method can give subjectively good quality reconstructed images.