图像增强 Resources

Showing items tagged with "图像增强"

Applying homomorphic filtering to images followed by local histogram equalization can achieve blur enhancement effects, suitable for applications such as thin cloud removal in remote sensing images. However, this approach requires further refinement and research for optimal results.

MATLAB 226 views Tagged

Image enhancement technology based on fractional-order differentiation, where the code leverages gradient information to better enhance high-frequency components while nonlinearly preserving low-frequency regions. Implementation typically involves constructing fractional differential masks and applying convolution operations to extract multi-scale features.

MATLAB 329 views Tagged

2. Image Enhancement: Image enhancement, also known as image sharpening, aims to strengthen detail information such as contour edges in images. Similar to image smoothing, image enhancement can be performed in both spatial and frequency domains. For spatial domain sharpening: subtracting the original image from a processed version yields the sharpened image g(i,j), i.e., g(i,j) = f(i,j) - α[f(i+1,j) + f(i-1,j) + f(i,j+1) + f(i,j-1) - 4f(i,j)] = f(i,j) + 4α[f(i,j) - avg]. Here α is an adjustable factor controlling sharpening intensity, where 1/4 represents the average gray value of the 4 neighboring points around the sharpened pixel.

MATLAB 277 views Tagged

This practical implementation of image enhancement via dyadic wavelet transform includes sample images and complete source code, featuring multi-scale decomposition and reconstruction algorithms for detail preservation and noise reduction.

MATLAB 231 views Tagged