LSB算法 Resources

Showing items tagged with "LSB算法"

Implements a fundamental digital image steganography technique, the Least Significant Bit Replacement (LSBR) algorithm. This method embeds secret data by modifying the least significant bits of image pixels with minimal visual impact. Key algorithmic steps include: 1) Converting spatial domain pixel values from decimal to binary representation 2) Substituting LSBs of carrier data with binary secret information bits 3) Reconstructing stego-image by converting modified binary data back to decimal pixels Implementation insight: The algorithm operates on pixel arrays where bitwise operations efficiently manage LSB manipulation.

MATLAB 210 views Tagged
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This is the most basic LSB (Least Significant Bit) algorithm for digital watermarking, featuring complete embedding and extraction functions with verified correct operation. Tested execution environment: MATLAB 6.5. The implementation demonstrates fundamental watermark hiding techniques using bit-level manipulation in grayscale images.

MATLAB 235 views Tagged
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Implementation in Spatial Domain The core principle of LSB digital watermarking: Modifying the least significant bit of binary images doesn't affect visual perception. Based on this, watermark information can directly replace the least significant bits of digital images. The embedding process consists of three main steps: 1. Convert spatial domain pixel values from decimal to binary representation using bit-level operations 2. Replace the least significant bits of corresponding data with each bit of binary watermark information through bit manipulation 3. Convert the watermarked binary data back to decimal pixel values to obtain the watermarked image using appropriate conversion functions

MATLAB 301 views Tagged
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This project implements digital watermarking technology through the Least Significant Bit (LSB) algorithm, featuring complete embedding and extraction functionality. The implementation includes four distinct attack algorithms and utilizes PSNR (Peak Signal-to-Noise Ratio) to measure differences between extracted watermarks and those retrieved after various attacks.

MATLAB 208 views Tagged
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A MATLAB-implemented LSB-based digital watermarking algorithm that embeds binary image watermarks into BMP grayscale images. The watermark is expanded to match the original image size and repeatedly embedded for enhanced robustness. The algorithm includes PSNR calculation for evaluating watermarking quality and provides code-level implementation details.

MATLAB 209 views Tagged
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