一种逆半调图像质量评价方法

A Kind of Method for the Inverse Halftoning Image Quality Assessment

传统图像质量评价方法不能很好地应用于逆半调图像,因此从逆半调图像中的噪声分布和人工纹理特性入手,以灰度共生矩阵为手段,建立起梯度幅值累加、熵、逆差矩和角二阶矩这些针对逆半调图像质量评价指标。该指标能够反映逆半调图像与其他类图像的不同处,体现逆半调图像的特性,通过实验证明该评价指标能够反映逆半调图像的边沿和平滑区的质量。

The traditional image quality assessment can not fit the inverse halftoning image. From inverse halftoning image＇s noise and the artificial texture, using the gray level co- occurrence matrix; to set up grads, entropy, inverse deficit moment and angle second moment index of the inverse halftoning image quality assessment. This can reflect the difference between inverse halftoning image and other image,incarnate the special property of the inverse halftoning image. At the same time,this index realizes the edge and smooth area of the inverse half toning image＇s quality.