An implementation of ZERO: a JPEG grid detector applied to forgery detection in digital images.
The approach is described in the following paper:
text
Tina Nikoukhah, Jérémy Anger, Miguel Colom, Jean-Michel Morel, and Rafael Grompone von Gioi,
ZERO: a Local JPEG Grid Origin Detector Based on the Number of DCT Zeros and its Applications in Image Forensics,
Image Processing On Line, 11 (2021), pp. 396–433. https://doi.org/10.5201/ipol.2021.390
This library is based on the original implementation written in C.
At the moment, it is a C-like Rust implementation very close to the original implementation. It is in the process of being refactored to be more idiomatic.
Let's say you have an image called image.jpg.
First, convert this image to a 99% quality JPEG using imagemagick convert tool:
shell
convert -quality 99% image.jpg image_99.jpg
Then you can use the example to generate the forgery masks:
shell
cargo r --release --example zero image.jpg image_99.jpg