White balance method and apparatus thereof

摘要

An entered image is divided into a plurality of windows and it is determined, on a per-window basis, whether the image data within an applicable window is indicative of the color white, based upon the position of each window in the image and the continuity to its surrounding divided windows. A white balance method is performed based upon data of a window determined to be indicative of the color white. The present invention conducts a white balance process through the addition of determining the light source type weight and calculating the continuity of each divided window and its surrounding divided windows. In order the white balance process to accurately obtain the colors of an entered image even under the conditions of specific scenes with distinctive colors.

主权项

1. A white balance method, comprising the steps of:
capturing an entered image; dividing the entered image into a plurality of divided windows; performing a color white identification of each divided window to produce a color white identification result of each divided window; determining a weight of the color white identification result corresponding to each divided window according to a position of the each divided window in the entered image, and a continuity of the plurality of surrounding divided windows; using the color white identification result and the weight of the divided windows to calculate a white balance estimated value of the entered image; and using the white balance estimated value to perform a white balance process of the entered image; wherein the continuity defines a color temperature difference between each window and a plurality of surrounding divided windows lower than a default value.