光照不均匀太阳像的一种基于视点的正确方法

2017 8th IEEE International Conference on Software Engineering and Service Science (ICSESS) Pub Date : 2017-11-01 DOI:10.1109/ICSESS.2017.8342902

Hongjuan Yang, Kaifan Ji, Yunfei Yang, W. Duan, H. Deng, Bo Liang

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引用次数: 0

摘要

传统的掩模法和背景拟合方法不能有效地校正光照不均匀的太阳图像。针对光照不均匀的太阳图像，采用了一种基于Retinex的正确方法。通过分别处理照度和反射率对亮度值的影响，压缩亮度范围，提高对比度，从而改善图像质量。它可以揭示图像阴影区域的细节特征。通过对平均强度、图像熵、图像对比度和峰值信噪比(PSNR) 4个评价指标的对比，证明了该方法在光照不均匀的太阳图像中是有效的。

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A correct method based on retinex for the solar image with uneven illumination

The traditional mask method and background fitting method can not correct effectively the solar image with uneven illumination. We adopt a correct method based on Retinex for the solar image with uneven illumination. The quality of image is improved by compressing the range of brightness and increasing the contrast by separately processing the effect of illumination and reflectivity to the intensity value. It could reveal the detailed character of the shadow area of the image. By contrasting four evaluate indexes, including the mean intensity, the image entropy, the image contrast and the peak signal to noise ratio (PSNR), this method is proved to be effective in the solar image with uneven illumination.

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2017 8th IEEE International Conference on Software Engineering and Service Science (ICSESS)

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