如何确定图像是否经过 Photoshop 处理？
有谁知道如何判断图片是否经过 Photoshop 处理？
编辑 具体来说，我想确定图像中的区域或像素是否已被 Photoshop 更改。我对查找 Photoshop 工作中的错误（缺少阴影、反射错误等）不太感兴趣，
我似乎记得类似高通滤波器之类的东西，您可以使用它来确定噪声级别。编辑区域的噪音会更少，或者至少噪音会发生变化。我很难找到有关此方法或其他方法的信息。
感谢您的帮助！
Does anyone know how to tell if an image has been photoshopped?
edit Specifically, I want to determine if regions or pixels in the image have been altered by photoshop. I'm not as interested in finding errors in the photoshop job (missing shadows, errors in reflections, etc)
I seem to remember something like a high-pass filter that you could use that would determine the noise levels. Edited regions would have less noise, or at least changes in noise. I'm having a hard time finding information on this or other approaches.
Thanks for your help!
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我使用这个网站来检查图像是否经过 Photoshop 处理或编辑：
http://imageedited.com
I use this website to check if an image is photoshopped or edited:
http://imageedited.com
如何发现 Photoshop 作业
如何判断 JPG 格式图片已经过 Photoshop 处理 (Windows)
Google 是您的朋友，可以为您提供许多相关结果。
HOWTO spot a photoshop job
How To Tell If A JPG Image Has Been Photoshopped (Windows)
Google is your friend for many relevant results.
也许摄影取证有用。它是一个在线程序，用于比较照片被压缩的次数。原始图像和添加的图像没有区别。希望对你有帮助。
http://fotoforensics.com
maybe fotoforensic works. its an online program to compare the no of times a photo has been compressed. the no differs for the original image and the added image. hope it helps u.
http://fotoforensics.com
我会尝试进行错误级别分析：
http://www.errorlevelanalysis.com/
点击该网站上的链接，也许可以与作者联系，我相信他们可以为您提供所需的指导。
I would give a try with error level analysis:
http://www.errorlevelanalysis.com/
Follow the links on that site and maybe get in contact with the author, I'm sure they can give you the needed pointers.
您必须检查的第一件事是文件的属性。
如果最后是通过 Photoshop 保存的，“详细信息”下应该有一个元数据 -> “起源”-> “程序名称”。 :)
The first thing that you have to check is the properties of the file.
If it was last save via photoshop, there should be a meta data under "details" -> "origin" -> "program name". :)