【摘要】 基于信号与噪声在不同尺度下小波系数模的变化特征,利用小波变换系数模局部极大值来提取图像的边缘特征。实验结果说明了这种特征提取方法能够较准确地提取图像的边缘并有效地降低噪声。更多还原

【Abstract】 Based on different properties of the gignal and noise in the wavelet coefficient modulus under the different scale of wavelet transformation,an edge detection method is proposed.Detecting the local maximum of the wavelet transformation coefficient modulus,it provides information of the image boundaries feature.Using the property we can detect image edge.Experimental result shows that the method accurately extracts the image edge and effectively reduces noise.更多还原