Method and apparatus for correction of image

Abstract

Disclosed is an apparatus comprising a processing device and a method for color correction of an image in a processing device, the method comprising: obtaining an image; determining a Laplacian matrixof the image; obtaining a first region of the image, the first region being indicative of a part of the image to be color corrected; obtaining a second region of the image; obtaining a first recoloring image based on the second region; determining a first corrected region of a first corrected image based on the Laplacian matrix and the first recoloring image; and obtaining and outputting a corrected image based on the first corrected region of the first corrected image.

Description

The present disclosure relates to methods and apparatus for correcting images in a processing device. Background technique A very well established process in studio photography is to photograph subjects that are easily separated from the foreground in front of the background. This background is usually blue or green, so it is called blue screen photography or green screen photography. This setup enables automatic subsequent removal of the background using so-called chroma keying, which is why it is largely considered the industry standard. However, a side effect of this process is that light spills from the background onto the subject, which leads to incorrect coloring of the final image. Various procedures called "spill correction" have been proposed to alleviate this problem, see eg US 6,553,140, ​​US 7,280,117, US 7,692,664, US 8,081,821 and CN 101764913. However, these methods do not provide images corrected to a satisfactory level. Contents of the invention Accor...

AI Technical Summary

Problems solved by technology

However, these methods do not provide images corrected to a satisfactory level

Images