White balance method and apparatus thereof

A white balance apparatus, comprising:

• an image capturing unit, for capturing an entered image;
• a dividing unit, coupled to the image capturing unit, for dividing the entered image into a plurality of divided windows;
• a color white identification unit, coupled to the dividing unit, for performing a color white identification of each divided window to produce a color white identification result of each divided window;
• a color white weight determination unit, coupled to the color white identification unit, for determining a weight corresponding to the color white identification result of each divided window according to the position of each divided window in the entered image and a continuity of the plurality of surrounding divided windows;
• a computing unit, coupled to the color white weight determination unit, for calculating a white balance estimated value of the entered image by using the color white identification result and the weight of the divided windows;
• and
• a white balance process unit, coupled to the computing unit, for performing a white balance process of the entered image by using the white balance estimated value;
• wherein the continuity defines a color temperature difference between each window and a plurality of surrounding divided windows lower than a default value.