Method and system of lens shading color correction using block matching

摘要

A system, article, and method to provide lens shading color correction using block matching.

主权项

1. A computer-implemented method of lens shading color correction, comprising:
obtaining at least one statistics grid of pixel data spatially corresponding to a frame having blocks; selecting at least some of the blocks to be included in at least one cluster of blocks, and comprising choosing candidate blocks at least with a difference in luminance or color ratio between the candidate block and a reference block that meets a criteria; finding an error associated with the color in the cluster; using the errors to determine a weight for one or more LSC tables; and forming a composite LSC table based on the weights and to be applied to correct color at the frame.