| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an image encoding device which does not necessitate reference of a quantization parameter between consecutive macro blocks across a parallel processing area without forming slices. <P>SOLUTION: The image encoding device (1) encodes a macro block of an encoding target image by parallel processing sequentially from the top of a parallel processing area, and possesses each of encoding elements (120 to 122) for every parallel processing area. When all the quantized orthogonally-transformed coefficients of a top macroblock of the parallel processing area are zero, the encoding element adds a non-zero coefficient to a part of the coefficients, making the coefficients non-zero. Accordingly, generation of a skip macroblock in the top macroblock of each parallel processing area is suppressed. Since slice formation is not necessary, the prediction over a parallel processing area boundary is applied, and encoding efficiency improves. Errors are not generated in decoding and the decoded image quality does not deteriorate. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
