IMAGE COMPOSITE APPARATUS AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide an image composite apparatus and method for preventing an altered color caused at image boundaries in the case of performing alpha blending and image magnification/reduction.

SOLUTION: After an alpha value arithmetic section 24 multiplies an opacity αvalue with one of image data with high priority, an image magnification/ reduction section 22 applies magnification/reduction to the image data. An image magnification/reduction section 23 applies magnification/reduction to the other image data. An alpha blending composite section 21 sums the other image data subjected to magnification/reduction by multiplication of a (1-α) value and the one image data subjected to magnification/reduction by multiplication of the alpha value. Multiplying the opacity α value with the one image data with high priority can respectively apply magnification/reduction processing to the one and other images and prevent occurrence of an altered color around the image boundaries.

COPYRIGHT: (C)2004,JPO