正变换 Resources

Showing items tagged with "正变换"

Robust Controller Design Using RBF Networks - This approach leverages Radial Basis Function (RBF) networks to approximate arbitrary nonlinear relationships. The objective is to minimize the sum of squared errors, aligning with nonlinear Principal Component Analysis (PCA) goals. The nonlinear PCA model can be implemented using two separate RBF networks: one for nonlinear forward transformation and another for inverse transformation. Each RBF network is a three-layer feedforward architecture with radial basis functions as activation functions in the hidden layer. The first network maps high-dimensional data to a low-dimensional space (Figure 4), while the second network reconstructs the original high-dimensional data from the low-dimensional representation (Figure 5). Both networks require independent training to ensure optimal performance.

MATLAB 241 views Tagged

MATLAB-based image enhancement implementation using Haar wavelet transform, featuring forward/inverse wavelet transforms with decomposition and reconstruction source code. The algorithm processes image data through multi-level wavelet decomposition, applies enhancement techniques to wavelet coefficients, and reconstructs the enhanced image.

MATLAB 189 views Tagged

This implementation performs both forward and inverse Arnold transformations, which are essential for image encryption, decryption, and compression applications. The code demonstrates chaotic pixel shuffling for security purposes and reversible reconstruction of original images.

MATLAB 233 views Tagged