IMAGE EDITING AND ENCODING DEVICE AND IMAGE DECODING DEVICE

摘要

PROBLEM TO BE SOLVED: To accurately recognize an area border by recognizing the area border of an image after editing from area information for editing at the time of editing a material image. SOLUTION: A switch 10 is connected to a terminal 11 when the value of data from a transparent part detection part 4 is '1' and to a terminal 12 when the value is '0'. Consequently, image data composed of material image A data and material image B data are inputted to a discrete cosine conversion part 6. Then the discrete cosine conversion part 6 performs discrete cosine conversion by units according to the encoded block area information inputted from an encoded block area determination part 5 and a quantization part 7 quantizes the discrete cosine conversion coefficient obtained as its result. A variable length encoding part 14 assigns a code to the quantized discrete cosine conversion coefficient and sends the code out to a multiplexing part 9.