Depends on the available information that you have on the original. Look at the survey on passive blind forensics techniques :
http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6648773
Other methods entail having access to the original and hashing, etc.
Image forgeries are seen quite often as there are a lot of cases that deals with an image as an evidence. Image analysis depends upon what sort of results we want. If we have to check tempering like cut-paste or move-over, I'd suggest using a professional image editing tool like Adobe Photoshop, try opening the image in that and chexknwith different color filters. Then check for the pixels while zooming in. Do check the metadata of the image as it'll help you to understand what sort of software was used in editing the image. If you have a image with steganography use steg-hide or other tools. Check hex of the image file, it'll give you more details about the format and editing.
- Badges
- Science topic
- Similar topics
- Computer Science
- Research Topics