Auto Exposure and White Balance

• Main Authors: Yu-Ting Chen, 陳宇廷
• Other Authors: Chiou-Shann Fuh
• Format: Others
• Language: en_US
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/38018231780634270454

碩士 === 臺灣大學 === 資訊工程學研究所 === 98 === Auto Exposure (AE), Auto White Balance (AWB), and Auto Focus (AF) are three important factors when we capture scenes by camera. Each of them can make noticeable influence on the quality of output images. In surveillance camera system, luminance is one of the major information, and AE is associated with the intensity of light directly. Furthermore, AWB is also a significant procedure if we need color feature to recognize objects. In this paper, a system of AE and AWB for surveillance camera is proposed. We integrate C. C. Yu’s method [1] with OmniVision 9710 sensor for surveillance, and we also add the procedure of AWB for better quality of output images. In addition, a selection method for well exposed pictures proposed by C. C. Yu is used for evaluation in our experiment.