自适应的纹理图像光照不变特征提取方法

摘要

为降低光照变化对纹理图像的影响，提出自适应的纹理光照不变特征提取方法。利用小波变换提取对数域纹理图像的高、低频分量，并分别采用不同方法对两者进行处理，提取其光照不变量图像，运用主分量分析法得到光照不变量数据的特征，使用K-最近特征线分类器进行图像分类。实验结果表明，该方法在光照条件复杂的Outex 14数据集上能够取得较好的分类效果，分类正确率高于现有方法5.56%~22.10%。%To reduce the influences imposed by changing illumination on texture images, a self-adaptive scheme is proposed to extract illumination invariant feature for texture images. Wavelet transform is utilized to extract both high and low components of the logarithmic images. Different processing strategies are each applied to each component to gain the illumination invariant image. Primary component analysis is adopted to obtain the illumination invariant feature. And a K-nearest feature line classifier is employed for classifying. Experimental results show that on Outex 14 texture dataset, the performance of the method is better than that of existing methods, from 5.56%to 22.10%higher respectively.