| 摘要 |
The present invention enables a coding process in object units for an image signal having no shape information, without performing a process for extracting shape information of a specific area in a natural image from the image signal having no shape information corresponding to an image such as the natural image. The image coding apparatus of the present invention comprises a shape value data memory 12 which contains shape values independent of pixel values constituting an image signal having no shape information. The coding of the pixel value is performed on the basis of the shape value Spel read from the shape value data memory 12 as well as the coding of the shape value is performed, and then pixel coded data Vstr and shape coded data Sstr are multiplexed and output.
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