Brief Analysis of Image Signal Processing for Smart Phone

Abstract

The imaging quality of camera phone is mainly determined by the lens, CMOS image sensor(CIS for short) and image signal processing(ISP for short),the algorithm of ISP is especially important because the thickness of the CIS is greatly restricted as cellphones tend to be thinner and lighter. The main function of ISP is to do the linearization, lens shading, bad pixel correction, color interpolation, AUTO white balance, color correction, gamma correction, de-noising and sharpening to make the digital images closer to the reality scene. In view of the importance of ISP in the imaging system of camera phone, deep research on it has theoretical significance and market value.