| 摘要 |
The present invention relates to an apparatus and a method for encoding image data which compresses image data by a combination of one-dimensional encoding and two-dimensional encoding for a plurality of lines. The apparatus is provided with a code start line selection section which changes an encoding start line position within a range of a processing unit defined by the combination of the one-dimensional encoding and the two-dimensional encoding, an encoding section which performs encoding for each processing unit from the encoding start line position, an encoding capacity determination section which determines an encoding efficiency on the basis of the result obtained by changing the encoding start line position, and an encoding control section which selects an encoding start line position at which the maximum encoding efficiency can be achieved from the determination result of the encoding efficiency. The method is performed by this configuration.
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