基于小波的小尺寸物体的图像边缘提取方法

基于小波变换的“多分辨”特性，采用一种利用小波模极大值，找到图像中的边界点，从而实现对灰度图像的边界检测的方法，通过分析图像中是否有灰度突变特征，来判断边界的存在。在进行边界检测之前。首先要滤除原图像的寄生噪声的干扰。实验结果表明：基于小波变换的边界检测方法可对图像边界进行敏锐提取，从而得到小尺寸物体的图像的细微特征。

Edge detection of little size object'''' s image based on wavelet

Basing on the multi-resolution of wavelet transform, the presence of an edge can be judged from the sudden changes in the image by using the modulus maxima of wavelet . Eliminate the incidental noises before detecting the edge of image. Experimental result show that image edges can be properly by this means and the exiguous character of little size object's image can be got.