Image processing apparatus and method with white balance correction

摘要

An image processing apparatus determines whether a second light source is present with respect to image data, generates, when it is determined that the second light source is present, first image data based on a first white balance correction value and second image data based on a second white balance correction value, and combines the first image data and the second image data according to a determined combination ratio.

主权项

1. An image processing apparatus comprising:
a correction value determination unit configured to determine a first white balance correction value corresponding to a first light source in captured image data and a second white balance correction value corresponding to a second light source in the image data; a light source determination unit configured to determine whether the second light source is present with respect to the image data by comparing a determination evaluation value calculated from the image data with a predetermined threshold value; a generation unit configured to generate, when the light source determination unit determines that the second light source is present, first image data from the image data based on the first white balance correction value, and second image data from the image data based on the second white balance correction value; a combination ratio determination unit configured to determine a combination ratio of the first image data and the second image data based on a difference between a color evaluation value of the image data and a white evaluation value under the second light source; and a combining unit configured to combine the first image data and the second image data according to the combination ratio determined by the combination ratio determination unit.