摘要:
A correlation ratio calculation section (36) quantizes the vectors of each frame of a moving picture by using a space direction code book. A space direction code book reconstruction calculating section (39) rearranges obtained code string to generate new vectors. The correlation ratio calculation section (36) quantizes the new vectors by using a time-axis code book. In such a way, not only vector quantization in the space direction is performed for each frame image, but also vector quantization in the time-axis direction is performed between frames along the time axis.
摘要:
With reference to one or more pieces of data (for example, the data at the left end in a block of 4 × 4 pixels) in a data string constituting one code vector in a code book, a code vector is generated by giving a value which increases in an increment of a predetermined value from the reference data value K to each piece of the other data in the block. A greatly versatile code book can be made at least for data on a pattern, for example, a face image, whose data value gradually varies by a small change.