Automatic White Balance with Color Temperature Estimation
Date Issued
2006
Date
2006
Author(s)
Wang, Po-Min
DOI
en-US
Abstract
This thesis discusses automatic white balance in digital camera. Auto white balance is the most important image processing step in the image pipeline of digital camera, since it controls the color appearance of the image. Without auto white balance adjustment, the photo will become bluish under high color temperature and have reddish color cast under low color temperature. Therefore, a camera with good auto white balance method produces accurate and satisfactory color appearance, and good image quality.
In the beginning, we introduce what automatic white balance is and its importance. Then, we describe several previous methods and indicate these methods’ main drawbacks. Furthermore, we propose a novel and robust automatic white balance method by using color temperature estimation. Finally, we use objective and subjective evaluations to evaluate these methods. By experimental results, we can find that our method has robust and satisfactory results and is popular for most users.
Subjects
白平衡
色溫
色彩恆定
white balance
color temperature
color constancy
awb
Type
thesis
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