求翻译：图像质量的客观评价方法可依次分为：全参考型、部分参考型和无参考型。本文针对完全参考型图像和无参考型图像质量客观评价问题，对目前一些典型的数字图像质量评价方法进行了简要介绍，并进行使用这几种方法分别对几幅加了不同程度的噪声的图像进行了质量评价，最后对比分析了他们的准确性。结果表明，均方误差（MSE）,峰值信噪比（PSNR）的图像质量评价方法不能准确反映图像的质量变化，和人的主观评价有一定差异。而无参考评价方法中熵评价方法是最能体现人眼的主观感受的。是什么意思？

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Quality of the image, then an objective evaluation methods can be divided into: the reference, part reference and no reference type. This document is Reference-type images, and no reference image quality with an objective assessment of the problem, of the present some of the typical digital image qu

The picture quality objective evaluation method may divide into in turn: The entire reference, the part reference and does not have the reference.This article in view of refers to the image completely and does not have the reference picture quality objective evaluation question, has carried on the b

Objective evaluation method for image quality in turn are divided into: all-reference, part of the reference types and reference-free. For fully-referenced image in this article, and no-reference objective image quality evaluation, some typical digital image quality evaluation method for a brief int

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