• Process an image so that output result is more suitable than original image.
• Spatial Operation
• Image Negative
• Log Transformation
• Power Law (Gamma Transformations)

Piecewise-Linear Transformation Function

Gray (Intensity)-Level Slicing

• Bit-Plane Slicing
• Histogram Processing
• Local Histogram Processing
• Spatial Filtering
• Smoothing Spatial Linear Filters
• Order-Statistic (Nonlinear) Filters
• Sharpening Spatial Filters
• Foundation
• Second derivatives- The Laplacian
• First Derivatives - The Gradient