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图像噪声的来源CCD、CMOS的工作原理大家都知道现用的监控摄像机一般都是采用CCD与CMOS感光元器件作为核心成像部件的。都是通过感光二极管的光电效应采集图像的。感光二极管在受到一定的光照后就会产生输出电流,光照强度与电流强度对应。但在周边元器件上CCD与COMS的组成是不一样的。CCD因为只能产生模拟信号所以在被后端DSP进行图像处理前是要进行统一的A/D转换的。而CMOS本身在每个像素部分都自
The source of image noise CCD, CMOS works As we all know the use of surveillance cameras are generally used CCD and CMOS sensor as the core imaging components. All through the photosensitive diode photoelectric effect capture images. The photosensitive diode will produce the output current after being exposed to a certain amount of light, and the light intensity and the current intensity correspond to each other. However, the components on the CCD and COMS composition is not the same. CCD because it can only produce analog signals, so the image processing is done before the back-end DSP is to carry out a unified A / D conversion. CMOS itself is in every pixel part