| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To change quantization values in units of image processing, and to facilitate changing processing for quantization values. <P>SOLUTION: An image processing unit 101 performs image enlargement/reduction processing etc., to a digital image signal. Image data after the image processing are JPEG-encoded by a DCT unit 102, a quantization unit 103, and a variable-length encoding/decoding unit 104. An arrangement of data of a code 105 is prescribed through processing of the image processing unit 101. A quantization table adjustment unit 108 which performs code rearrangement performs the rearrangement and outputs a code 109. The code 109 is decoded in a regular processing direction prescribed by an encoding format, for example, JPEG, so as to obtain a desired image. For adjustment of quantization values, conversion between variable-length codes differing in quantization value is performed by replacement of codes using a variable-length code replacement table. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
