虽然我不确定降低jpeg的质量对检测伪造有多大帮助，但是有减少代码此处的质量: http://www.geekpedia.com/tutorial232_Reducing-JPEG-Picture-Quality -using-Csharp.html [ ^ ]

While I am not sure how much help reducing teh quality of a jpeg will be to you in detecting forgeries, there is code to reduce quality here: http://www.geekpedia.com/tutorial232_Reducing-JPEG-Picture-Quality-using-Csharp.html[^]