초록 ▼

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 paramete

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.

대표청구항 ▼

An image processor for processing a three-dimensional representation of an object to determine two-dimensional representation parameters to permit displaying an image of the represented object on a display screen, said image processor comprising: means for inputting a plurality of sets of parameters

An image processor for processing a three-dimensional representation of an object to determine two-dimensional representation parameters to permit displaying an image of the represented object on a display screen, said image processor comprising: means for inputting a plurality of sets of parameters each set corresponding to a single polygon in a plurality of polygons which represent said three-dimensional object at a predetermined angle of observation, each set of parameters defining a set of line segments which constitute the intersection of each polygon with a plurality of planes perpendicular to a plane of visualization through each line of visualization on the display screen, the plane of visualization corresponding to the plane of the display screen and the line of visualization corresponding to a line of visual elements on the display screen; and means for determining the parameters of a plurality of visual elements in a line of visualization comprising means for simultaneously determining the parameters of a plurality of line segments and means for serially processing each parameter in a set of parameters, said serial processing being of the pipeline type, and for selecting and storing the parameters of line segments closest to the plane of visualization.