一种扩展动态范围的图像处理算法

An Image Processing Synthesis of Enhancing Dynamic Range

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 peripheral expansion,and improve the signal-to-noise ratio of the image,the image can be further enhanced to obtain the ideal image.This algorithm has a better speed and can be,applied to the image sensor and inhibition of target image light.