| 摘要 |
A processor of images of objects described in three dimensions for determining parameters of pixels on a display screen. The processor possesses inputs for parameters of convex polygons describing the objects in a frame of visualization and determines from the parameters of the polygons the parameters of the pixels of a transformed two-dimensional image of that object. In order to eliminate concealed faces of objects displayed on the screen from a perspective view, the processor selects and stores the parameters of all the elements of the transformed image which are closest to the plane of visualization (the display screen). The image processor is noteworthy in that it serially processes, by pipeline organization, the parameters of a set of segments which constitute the intersections of the set of polygons with each line of visualization of the visual display device, a plurality of segments being processed simultaneously. The parameters of the segments being obtained by previous conversion of the parameters of the polygons. The processor comprises n blocks, each allocated to the serial processing of the pipeline type of the parameters of one of the n pixels of a line of visualization, each block comprising: a decrementor, a validation element and a basic cell which receives and stores parameters of depth and of color and determines new ones, and which then transmits color parameters to a visual display device. According to a further variant, the image processor also includes a circuit for the conversion of the parameters of polygons into parameters of segments. |
