| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable high-quality encoding by deciding the order of coefficients, carrying out blocking by the determined order and carrying out encoding, and making the amount of codes formed to be a predetermined fixed length of a fixed amount. <P>SOLUTION: In encoding a multivalued image by a block having an arbitrary size, the inputted multivalued image are divided 11 into blocks which are a unit for encoding, two-dimensional wavelet transformation 12 is applied to the blocked image, and an encoding order 13 for forming high quality is determined from the state of coefficients after conversion. The coefficients are divided into blocks 14 having a size of encoding by the determined coefficient order, the coefficients are encoded 15 for every blocked coefficient, and the code amount is controlled 16 so that the encoded code amount becomes the code amount of a fixed length. <P>COPYRIGHT: (C)2003,JPO</p> |
