菱形滤波器在图像平滑中的应用

传统的空间域图像平滑中,一般使用矩形滤波器与图像卷积的方法,在滤波器增大时,图像模糊比较严重,对菱形滤波器与相同大小的矩形滤波器进行比较,其离中心像素最远的像素距离仅是矩形滤波器的1/2,在N阶滤波器中比矩形滤波器少使用(N2-1)/2个像素,既可以有效地对图像进行平滑,又可以降低图像的模糊程度,且能提高效率。

Application of Rhombus Mask in Image Smoothing

In the general spatial domain image smoothing,the image convolution and the rectangle mask are usually used,but the image will be very fuzzy when the mask becomes large.This paper develop the rhombus mask,and it can be used in the image smoothing and reduce the fuzzy of image,also,the distance of the central pixel is onay 1/2,times and the number of the pixels of the mask is(n~2-1)/2 less than the rectangle mask n x n of the same size,and then,efficiency is improved.