摘要
在网页设计中对其颜色特征进行优化,能够有效提高网页的视觉效果。对形象型网页的局部颜色特征的优化,需要先获取当前像素点的亮度水平,完成局部对比度增强。传统方法对三边滤波的滤波窗口进行角度倾斜,计算出图像像素最优邻域范围,但忽略了得到当前像素点,导致特征优化效果不理想。提出从视觉传达角度出发的基于多尺度Retinex的形象型网页局部颜色特征优化方法。该方法给定一个非线性映射模型分析形象型网页图像的统计特征,对其自适应调整整体亮度,得到形象型网页图像当前像素点的邻域平均亮度,以当前像素点的亮度水平与其邻域平均亮度之间的关系完成局部对比度增强,对形象型网页局部图像颜色进行恢复与校正处理,将局部区域图像进行加权融合处理实现颜色特征优化。实验结果表明,所提方法增强了形象型网页特征,改善了形象型网页图像的整体视觉效果。
We present an optimization method for local color feature of image web page based on multi-scale Ret- inex from perspective of visual transmission. This method gave a nonlinear mapping model to analyze statistical char- acteristic of image in visual web page, Adjusting overall brightness for it adaptively, we can obtain average brightness of neighbourhood of current pixel point of image in visual web page. Then we used relationship between average brightness level of current pixel and its average brightness of neighbourhood to complete local contrast enhancement. Moreover, the local color image of visual web page were restored and corrected. Thus, the weighted fusion for local area image can achieve the optimization of color feature. Experimental result shows that the proposed method en- hances the visual web page feature and improves the overall visual effect of visual web page.
作者
吴伟
WU Wei(Qingdao University of Science ＆ Technology College of The Arts, Shandong Qingdao 266061, China)
出处
《计算机仿真》
北大核心
2017年第11期408-412,共5页
Computer Simulation
关键词
形象型网页
颜色特征
特征优化
Image web page
Local color feature
Feature optimization
