Virtual view point drawing method based on spatial weighting

Abstract

The invention discloses a virtual view point drawing method based on a spatial weighting. According to the drawing method, the coordinate transformation of pixel points is performed by using rows as units so as to obtain actual projected pixel points, and then interpolation processing is performed by using the rows as the units, so that upper and lower sampling operations in the VSRS drawing method of virtual view points are omitted, and the drawing time is further shortened; the spatial positions of the projected pixel points, and the influences of a plurality of projected pixel points on the drawing quality are sufficiently considered, and a spatial weighting manner is adopted, so that noise caused by the inaccuracy of depth images is effectively decreased, the drawing precision is improved, and the subjective quality and the objective quality of virtual view-point images are further improved; the influences of different regions of reference view points on the drawing quality are sufficiently considered, the number of the projected pixel points near whole pixel points in the virtual view-point image broadwise reflects the regional distribution situation, and corresponding interpolation can be performed on different regions, so that the pixel points in the reference view points can be accurately inserted in the virtual view points, and the quality of the virtual view-point image is improved.

Description

technical field [0001] The invention relates to a virtual viewpoint rendering technology, in particular to a virtual viewpoint rendering method based on space weighting. Background technique [0002] With the rapid development of digital video technology, two-dimensional video uses flat images to describe real three-dimensional scenes, which can no longer meet the needs of users for realism and three-dimensionality. Compared with the traditional two-dimensional video, the Free Viewpoint Video (FVV, Free Viewpoint Video) system enables users to freely choose viewing angles, and the Free Viewpoint Video can bring a strong visual impact, making the audience feel that the scene is oncoming If you are on the scene, you can feel the real sense of depth and immersion, which is the development direction of the new generation of multimedia video system. In free-viewpoint video, due to the limitation of cost and transmission bandwidth, it is impossible to place a camera on each viewp...

AI Technical Summary

Problems solved by technology

[0009] From the above, it can be seen that the two interpolation methods are simplified and approximate methods, neither of which accurately measures the horizontal distance between the projected point and the point to be interpolated, does not make full use of the depth information, and fails to achieve a balance between the two. Make a reasonable trade-off, ignoring the impact of occluded multiple projection points on the drawing quality

However, pixel interpolation technology is a very critical issue. If it cannot accurately insert the pixels in the reference viewpoint into the virtual viewpoint image space, it will cause the pixels to shift, or cause the foreground pixels to be different from the background pixels. The aliasing effect occurs between them, which reduces the subjective and objective quality of the drawing

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