| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent the reduction in display quality associated with resolution reduction in calculation of a context between objects even in a case such that a number of objects are present within a field of view, for example, in a view condition for viewing the distance. <P>SOLUTION: N kinds of objects (CL1-CL5) disposed in a virtual three-dimensional space are subjected to perspective transformation processing while being divided by M kinds of perspective transformation matrixes differed in clip range (a perspective transformation matrix for distant view photographing and a perspective transformation matrix for near view photographing). Namely, when the whole longitudinal direction of the clip range is equally divided by a predetermined bit number to express a context between objects by the bits, the resolution of depth directional distance in the virtual three-dimensional space per bit can be enhanced, compared with the case in which the perspective transformation processing is performed once while taking the entire overlooking distance from a visual point as one clip range. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
