| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide image processing technology allowing further heightening expressive power of shadow expression suitable for a handwritten-type image or an image similar thereto. <P>SOLUTION: In this image processor, an arithmetic means (1) perspectively projects a virtual three-dimensional space disposed with an object onto a perspective projection plane set correspondingly to a viewpoint, and generates basic image data (S11), (2) calculates an inner product value between a normal vector of each polygon constituting the object and a light vector of a light source (S13), performs data conversion processing of the inner product value to convert it into a density value varying between a prescribed upper limit threshold value and lower limit threshold value (S14), and (4) performs mapping of a texture to the basic image data based on the density value to generate two-dimensional image data (S16). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
