为抑制强背景光而获取目标图像,扩展图像传感器的动态范围是一种有效的方法.图像传感器动态范围的扩展可采用多种技术,如对数像素结构、横向溢出栅像素机构、多次曝光技术、局部曝光技术等.提出一种图像处理的算法来扩展动态范围,其原理是对同一图像进行连续采集两次,利用数学算法对图像进行合成以达到动态外围的扩展,进而提高图像的信噪比,可进一步对图像进行增强,获得理想的图像.本算法的运算速度快,应用于图像传感器的抑制强光获取目标图像.%To restrain strong background and light extension target image,the dynamic range of image sensor is a kind of effective method. The expansion of dynamic image sensor can use a variety of techniques, such as logarithm pixel structure,horizontal bar pixel institutions, many overflow exposure technology, local exposure technology, etc. This paper proposes a novel image processing algorithm to expand dynamic range, the principle is the same image of continuous gathering twice, using mathematical algorithm for image synthesis to achieve dynamic peripheralexpansion,and improve the signal-to-noise ratio of the image, the image can be further enhanced to obtain the idealimage. This algorithm has a better speed and can be, applied to the image sensor and inhibition of target image light.
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