U.S. Philips Corporation

Patrick F Meijers

Hendrik Tjalling Dijkstra

A series of points on a surface is projected onto pixels of an image along a projection axis. Furthermore, texture coordinates are allocated to the points as follows. First a normalized coordinate which is a ratio of the texture coordinate to a depth of the point along the projection axis is determined by linear interpolation. Displacement of the pixel is determined relative to a line in the image onto which a part of the surface, which has a constant depth in the projection direction, is projected. Subsequently, an interpolation function is calculated which interpolates the depth as a function of the displacement. The texture coordinate is determined by multiplication of the normalized coordinate by the depth. The image contribution by the point to an image content of the pixel is determined on the basis of the texture coordinate.

Method and device for graphics mapping of a surface onto a

An output image is created through a parallactic transformation of an input image. Pixels of the input image are supplied as a color value and a depth value. A depth converter 520 converts the depth value into a depth-dependent pixel shift, which is stored in a memory 510 together with the color value. A processor 530 generates the output image from the stored input image for `on the fly` supply to a stereoscopic display system by shifting the input pixels. A 3D-rendering process may be used to generate one input image for a pair of stereoscopic output images, or occasionally for moving images, whereas the depth-dependent shifts are used to create the parallactic image effects. Artifacts such as undesired holes or overlaps resulting from the shifts are avoided.

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Eindhoven, Netherlands

Patrick F Meijers