Crate blind_watermark 

Blind Watermark

A Rust library for blind image watermarking using DWT (Discrete Wavelet Transform), DCT (Discrete Cosine Transform), and SVD (Singular Value Decomposition). The algorithm is originally implemented in python by Guo Fei at this repository. This is the rust rewritten version.

Features

• Blind Watermarking: Extract the watermark without needing the original image.
• Robust Algorithm: Combines DWT, DCT, and SVD for embedding watermarks in the frequency domain.
• High Performance: Developed in Rust, leveraging the faer crate for efficient matrix computations and rayon for multi-threading support.
• Flexible: Supports embedding arbitrary binary data (e.g. Vec<u8>). String watermarking is natively supported.

Modules

config

prelude

strategy

transform

utils

Structs

AssembledYCrBrAMat

Image data assembled back from blocks and subbands.

Block

A single block of the image (typically 4x4).

BlockCutted

Image data with the LL subband divided into blocks.

DwtedYCrBrAMat

Image data after Discrete Wavelet Transform (DWT).

Imbedded

Image data with watermark embedded in the blocks.

PaddedYCrBrAMat

Padded matrix representation of an image in YCbCrA color space.

YCrBrAMat

Matrix representation of an image in YCbCrA color space.