Image & Video Processing

Color spaces, channels, sampling & quantization

• BGR / RGB / Grayscale / Binary
• Color channel splitting
• Sampling & quantization (1–8 bit)

Pixel-level operations between images

• Image addition
• Image subtraction
• Image multiplication

Gray-level transformations on pixel intensities

• Negative transformation
• Logarithmic transformation
• Power (gamma) transformation

Analyzing and enhancing images via histograms

• Histogram representation
• Histogram equalization
• CLAHE
• Local histogram equalization

Convolution-based filters for noise and sampling

• Simple filters & convolution
• Subsampling with filters
• Mean filter noise reduction
• Min/Max filter for salt & pepper

Sharpening and restoring degraded images

• Image sharpening filters
• Butterworth low-pass filter
• Wiener filter restoration

Binary segmentation and region labeling

• Global thresholding (manual & auto)
• Adaptive local thresholding
• Region labeling with Otsu

Color region mapping and gradient-based edges

• Color assignment by region
• Prewitt operators (H & V)
• Combined edge magnitude

Laplacian of Gaussian and zero-crossing detection

• LoG (Laplacian of Gaussian)
• Local maxima suppression
• Zero-crossing detection