Explore MATLAB source code curated for "图像" with clean implementations, documentation, and examples.
This graphical user interface enables digital watermarking operations on images through DWT/IDWT transformations. Users can batch process image folders with single-click functionality, embedding watermarks in frequency-domain images while automatically calculating PSNR and MSE metrics for extraction quality assessment.
This code demonstrates the core principles of the SPIHT (Set Partitioning in Hierarchical Trees) algorithm for image compression. The implementation excludes Arithmetic Coding for simplicity and currently supports only 128x128 pixel images—generalization for arbitrary image sizes requires additional modifications.
Implementation of Moravec interest operator for extracting point features from images with MATLAB code development
Implementing simple two-class texture segmentation through gray-level co-occurrence matrix analysis within sliding windows. This approach involves calculating texture features using GLCM properties and applying classification algorithms for pixel-wise segmentation.
Image vanishing point detection employing edge detection and Hough transform techniques with algorithmic implementations
MATLAB implementation for image homography rectification with sample images and examples. The core algorithm is available in RectifyImg.m, which performs perspective correction using projective geometry transformations.
This MATLAB program implements digital watermark embedding for images using Discrete Cosine Transform (DCT), featuring DCT/IDCT operations and frequency-domain processing for copyright protection and integrity verification.
Implementation of reading hundreds of *.txt files into a program, performing data processing through Fast Fourier Transform (FFT), and visualizing the results as images with code-level explanations.
For beginners in image retrieval who lack understanding of feature-based approaches, this compact program (including sample images and examples) demonstrates the workflow and serves as a valuable foundation for further research.
Multiscale directional feature extraction from images using wavelet transform, implemented with db4 wavelet for effective image analysis