基于空间域噪声检测的彩色图像缩放增强方法

Scaling Enhancement Method of Color Image based on Noise Detection on Spatial Domain

针对现有的彩色图像直方图均衡算法在增强图像的同时不可避免地会放大图像中的噪声,导致不能很好地保持原始彩色图像的色调特征问题,提出了一种基于空间域噪声点检测的增强算法.算法首先通过噪声检测标记出所有可能的噪声像素点,利用RGB灰度值缩放的方式增强所有非噪声点,然后采取八近邻来插值替换标记的所有噪声点得到最终输出结果.实验结果表明,算法能够较好地增强图像视觉效果,实现输出图像的峰值信噪比的提高,可用于一般电子类消费产品的需求.

Aiming at the problem that the existing color image enhancement algorithm which will amplified noise can not well keep the color feature of the original color image,proposed a new algorithm based on noise detection on spatial domain.Firstly marked all the possible noise pixels by noise detection,and using the gray scale method to enhance all non-marked pixel points,then average the eight neighbor in the enhanced image of the marked noise points to replace as the final output results.The experimental results show that the algorithm can well improve the visual effect of the image and the peak signal to noise ratio of the output image,which is suitable for general electronic consumer products.