Contour presence determining method, involves determining threshold based on portion in image version, and applying threshold to image version to obtain localization image localizing contour

摘要

The method involves applying threshold to a still image version with resolution, and determining representative information of a portion of the pixels of the image version. Another threshold is determined based on the portion in an image version with another resolution, and the latter threshold is applied to the image version with latter resolution to obtain a localization image localizing the contour with the latter resolution. Independent claims are also included for the following: (1) a device for determining presence of contour in multiresolution image (2) a method for coding a multidimensional digital signal of an image (3) a device for coding a multidimensional digital signal of the image (4) a method for decoding a coded multidimensional digital signal of an image (5) a device for decoding a coded multidimensional digital signal of an image (6) an information storage unit readable by a computer or microprocessor (7) a computer program loaded in to a programmable apparatus.