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Contrast-enhanced microscopic imaging of Malaria parasites

机译:疟原虫的对比增强显微成像

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This paper proposes an efficient algorithm for contrast enhancement to preserve the essential details of microscopic images of malaria infected blood using Gamma Equalization (GE). The central idea of this method is first, to convert the input color blood image into gray scale one, and then to calculate the range value for the γth order image of a gray scale image. The look-up-table (LUT) values are calculated and the gray scale image pixel intensity values are converted into LUT values which yield final contrast-enhanced image by retaining the essential details. We tested different values of gamma (γ). The value of γ = 0.8 yields maximum contrast enhanced image, which is very useful for image analysis and a computer aided diagnostic system for malaria. On comparison, GE is found to be better than Histogram equalization (HE), Imadjust (IA) and Contrast-limited adaptive histogram equalization (CLAHE) for microscopic blood images of malaria by using image quality measures: Absolute mean Brightness error (AMBE), Entropy and average luminance.
机译:本文提出了一种有效的对比度增强算法,可以使用伽马均衡(GE)保留疟疾感染血液的显微图像的基本细节。该方法的中心思想是,首先将输入的彩色血液图像转换为一个灰度图像,然后计算灰度图像的γ阶图像的范围值。计算查找表(LUT)值,并将灰度图像像素强度值转换为LUT值,这些LUT值通过保留基本细节来产生最终的对比度增强图像。我们测试了不同的伽玛(γ)值。 γ= 0.8的值可产生最大对比度增强的图像,这对于图像分析和疟疾的计算机辅助诊断系统非常有用。相比之下,通过使用图像质量测量方法,GE对于疟疾的显微血液图像而言,优于直方图均衡(HE),Imadjust(IA)和对比度限制自适应直方图均衡(CLAHE):绝对平均亮度误差(AMBE),熵和平均亮度。

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