视频编码器图像比较算法？ [英] Video-codec rater by image comparison algorithm?

问题描述

也许任何人都知道这是否可能。
比较图像质量几乎是不可能描述没有主观影响。当有人把图像质量评价为好，至少有一个人，那不这么认为。
人类偏好总是不同的。

因此，我想知道是否有一个算法比率的图像质量，

• 颜色变化（像素差异）


• 模糊率


• 工件和宏块

第一个将是最简单的一个，因为你可以检查颜色的差异，并且可以给每个十六进制值
的+ - 中的3个值，最后一次我不知道这是否可能，但是可以通过边缘检测来检测阻塞。

，国王的任务是做更多的只是一个图像，因为视频是用几个帧完成。

你的专家程序员可以告诉我，如果这样的自动化算法可以做一些客观的测量divice到评级图像质量这可能可能冷静下来一些h.264比x264和优于vp8和blaaah人： p>

Andreas

第1张贴在这里 http://www.hdtvtotal.com/index.php?name=PNphpBB2&file=viewtopic&p=9705

解决方案

您可能对我写的一个C库（IQA）感兴趣，它实现了MSE，PSNR，SSIM，MS-SSIM， MS-SSIM *。您可以在这里查看：

http：// tdistler。 com / iqa /

perhaps anyone knows if this is possible. comparing image quality is almost imposible to describe without subjective influences. When someone rates an image quality as good there is at least one person, that doesn't think so. human preferences are always different.

So, I would like to know if there is away to "rate" the image quality by an algorithm that compares the original image to the produced one in following issues

• colour change(difference pixel by pixel
• blur rate
• artifacts and macroblocking

the first one would be the easiest one because you could check just the diffeence in colours and can give 3 values in +- of each hex-value both last once I don't know if this is possible, but the blocking could be detected by edge-finding.

and the king's quest would be to do that for more then just one image, because video is done with several frames.

perhaps you expert programmers could tell me, if such an automated algo can be done to bring some objective measurement divice into rating image quality. this could perhaps calm down some h.264 is better than x264 and better than vp8 and blaaah people :)

Andreas

1st posted here http://www.hdtvtotal.com/index.php?name=PNphpBB2&file=viewtopic&p=9705

解决方案

You might be interested in a C library I wrote (IQA) that implements MSE, PSNR, SSIM, MS-SSIM, and MS-SSIM*. You can check it out here:

http://tdistler.com/iqa/

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