: Essential for the modern web, reducing file sizes for faster transmission and storage. Malla Reddy College of Engineering and Technology From the Moon to the Classroom
Image enhancement aims to improve visual appearance or emphasize features for interpretation. Spatial domain methods operate directly on pixels and include contrast stretching, histogram equalization, smoothing filters (mean, median) for noise reduction, and sharpening filters (Laplacian, unsharp masking) to emphasize edges. Frequency domain methods transform images (typically via the Fourier transform) and manipulate spectral components—low-pass filtering for blur, high-pass for edge enhancement, and band-pass for texture emphasis. Adaptive techniques adjust processing based on local image statistics. digital image processing jayaraman ppt
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