专利汇可以提供Picture generating method专利检索,专利查询,专利分析的服务。并且PURPOSE: To increase the picture generation speed by detecting the presence or the absence of shadow in accordance with results of comparison between the Z value of a shadow polygon and that of a polyhedron of each picture element to make it unnecessary to discriminate intersections between the fundamental state of an object and lines.
CONSTITUTION: In a graphic processing part 1 of a picture generating system, input graphic data is converted to picture element data by the Z-buffer method and the ray tracing method to obtain the shadow polygon. In a picture element processing part 2 to which output data of the processing part 1 is inputted, data processing of a Z-buffer memory 3, a frame memory 4, a reflection/ transmission flag memory 5, and a shadow flag memory 6 is performed. The Z value of each picture element is stored in the memory 3, and color information of each picture element is recorded in the memory 4, and information indicating whether each picture element has a reflection/transmission attribute or not is stored in the memory 5. The memory 6 is used to decide whether each picture element exists on the inside or the outside of the shadow. Thus, it is unnecessary to decide intersections between the fundamental shape of the object and lines, and the image generating speed is increased.
COPYRIGHT: (C)1988,JPO&Japio,下面是Picture generating method专利的具体信息内容。
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