how can I compare two image after some changes?

2017 1 21
1 个回答
更新时间：2017 1 21
12 次查看（30 天）

0 个投票

HI, I want to compare two image and show the difference between them by a number. how can I do it? I want to normalize this difference. both images have same size, for example first image is the original image and second image is the original image after jpeg attack. using norm function is it true?

请先登录，再回答此问题。

回答（1 个）

Vandana Rajan
Vandana Rajan 2017-1-21

0 个投票

Hi,
To measure quality of lossy image compression techniques like JPEG, you may use PSNR (Peak Signal to noise ratio).
https://en.wikipedia.org/wiki/Peak_signal-to-noise_ratio
https://in.mathworks.com/help/images/ref/psnr.html
https://in.mathworks.com/help/images/image-quality-metrics.html

类别

在 帮助中心 和 File Exchange 中查找有关 Image Quality 的更多信息

标签

提问:

nadia
nadia
2017-1-21

回答：

Vandana Rajan
Vandana Rajan
2017-1-21

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by