Patent ID: 9509909
Filing Date: 2016-11-29
CPC Classification: G06T,H04N

Claim Text:
1. A method for use in a surround view camera system, the method comprising: performing block averaging on samples in respective blocks of pixel values in a view overlapping region of a plurality of views to extract block samples from the view overlapping region of the plurality of views; determining block sample pairs based on the block samples where each of the block samples in a block sample pair corresponds to a same position in the view overlapping region and to a respective one of the plurality of views; selecting one or more of the block sample pairs as first sample inliers based on a sum of squared distances between corresponding components in respective block samples of each of the block sample pairs; estimating a color gain for the selected block sample pairs; updating block samples of the selected block sample pairs based on the estimated color gain to generate gain-adjusted block sample pairs; selecting one or more of the gain-adjusted block sample pairs as second sample inliers based on a sum of squared distances between corresponding components in respective block samples of each of the gain-adjusted block sample pairs; estimating a tone mapping curve based on the selected gain-adjusted block sample pairs; applying a color transform to each of the plurality of views based on the estimated tone mapping curve to produce a plurality of color transformed views; and producing a composite surround view image based on the color transformed views.