技术 Resources

Showing items tagged with "技术"

MATLAB program for Interleave Division Multiple Access (IDMA), a promising technology that enables user signal separation through simple iterative operations. The implementation includes key algorithmic components such as iterative multiuser detection, interleaver design, and interference cancellation mechanisms.

MATLAB 226 views Tagged

Matlab source code for image segmentation containing implementations of various common techniques including threshold-based segmentation, edge detection, and region growing algorithms

MATLAB 220 views Tagged

Image mosaic technology spatially aligns and matches a sequence of images with overlapping areas, then performs resampling and synthesis to create a complete, high-resolution panoramic image containing information from all input images. This technology has extensive applications in photogrammetry, computer vision, remote sensing image processing, medical image analysis, and computer graphics. The image mosaic process typically consists of three key steps: image acquisition, image registration (alignment), and image blending/synthesis, where image registration serves as the fundamental component. This paper investigates two distinct image registration algorithms: feature-based registration and transform-domain-based registration, with implementation considerations for feature detection, matching, and transformation estimation.

MATLAB 252 views Tagged

Application Context This code provides an extremely detailed simulation of an OFDM system. To facilitate better understanding for learners, the simulation includes both real and imaginary components of defined functions. It covers pre-demodulation processing, post-demodulation analysis, normalized power calculations, and other critical aspects. This comprehensive simulation approach offers significant educational value for understanding OFDM system implementation. Key Technology OFDM (Orthogonal Frequency Division Multiplexing) is essentially a multicarrier modulation technique derived from MCM (Multi-Carrier Modulation). The modulation and demodulation processes are implemented using IFFT and FFT operations respectively, making it one of the most efficient and widely adopted multicarrier transmission schemes with minimal implementation complexity.

MATLAB 354 views Tagged

In the multimedia-driven information era, image security has become paramount as image value depends on contained information. This project implements compressive sensing-based encryption with key-controlled circulant matrices, dividing images into blocks for simultaneous compression and encryption through randomized pixel scrambling, addressing traditional key distribution and efficiency challenges.

MATLAB 310 views Tagged