IMAGE INPUT DEVICE, IMAGE PROCESSING APPARATUS, IMAGE INPUT METHOD, IMAGE PROCESSING METHOD, AND IMAGE INPUT SYSTEM

摘要

PROBLEM TO BE SOLVED: To easily decode an image whose resolution and size are not much different from those of an image from the image that is sub-band coded even when the image with any resolution and any size is received and to attain coding with a high efficiency. SOLUTION: The resolution and the size of a received digital image are designated and by deciding a level number of the sub band coding depending on the designated resolution and size, an image whose resolution and size are not much different can be easily decoded, and the processing of the image signal after the coding is facilitated. Furthermore, since the size and the resolution of the sub band image finally obtained have a conversion coefficient of a prescribed value or over, the coding efficiency can be enhanced.