| 摘要 |
An apparatus for encoding image data of the present invention is provided with a one-dimensional encoder which encodes image data one-dimensionally, a two-dimensional encoder which encodes image data two-dimensionally, a thin line determination section which determines the frequency of occurrence of short run-length from a run-length count value during encoding of lines applied with the one-dimensional encoding, and an encoding control section which, when it is determined from the determination result in the thin line determination section that the frequency of occurrence of the short run-length is high, restricts the number of lines which are applied with the second-dimensional encoding within a predetermined range.
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