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一种改进CLAHE算法在医学试纸条图像增强中的应用 被引量:14

The Application of an Improved CLAHE Algorithm in Image Enhancement of Medical Test Strip
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摘要 在图像对比度增强算法中,结合自适应直方图均衡化和对比度受限两项技术的对比度受限自适应直方图均衡化算法(CLAHE)是一种常用的低对比度图像增强算法。为了解决快速诊断试剂中的过敏原检测试纸条图像对比度低的问题,尝试给出一种改进的CLAHE图像增强新算法。新算法在传统的CLAHE算法的基础上,通过引入一个自适应参数T来自动调整图像每个子块的像素点重新分配的范围,从而达到增强图像细节的目的。通过对过敏原检测试纸条图像增强的实验对比分析,表明改进后的CLAHE算法可有效地改善该类医学试纸条图像的增强视觉效果,为后续医学试纸条的分割和识别奠定基础。与此同时,以图像均方根对比度为定量统计依据,与传统CLAHE算法的结果比较得出:改进的CLAHE算法明显提高图像均方根对比度,传统的CLAHE算法平均提高原图像均方根对比度1~2倍,而改进的CLAHE算法平均提高3~4倍,进一步验证新算法是一种对过敏原检测试纸条图像增强更为有效的方法。
出处 《中国生物医学工程学报》 CAS CSCD 北大核心 2016年第4期502-506,共5页 Chinese Journal of Biomedical Engineering
基金 浙江省自然科学基金资助项目(LY14F020043) 国家自然科学基金(61370218)
关键词 图像增强 对比度受限自适应直方图均衡(CLAHE) 医学试纸条图像 image enhancement contrast limited adaptive histogram equalization (CLAHE) medical test strip
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参考文献10

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二级参考文献20

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