Digital Imaging and Processing

  1. Feature Extraction and Description
    1. Feature Representation Fundamentals
      1. Feature Types
        1. Geometric Features
          1. Statistical Features
            1. Structural Features
            2. Feature Selection Criteria
              1. Discriminability
                1. Reliability
                  1. Independence
                    1. Computational Efficiency
                  2. Boundary Representation and Description
                    1. Chain Codes
                      1. Freeman Chain Code
                        1. Differential Chain Code
                          1. Properties and Normalization
                          2. Polygonal Approximations
                            1. Minimum Perimeter Polygons
                              1. Merging Techniques
                                1. Splitting Techniques
                                2. Signatures
                                  1. Boundary Signatures
                                    1. Complex Coordinates
                                    2. Skeletons
                                      1. Medial Axis Transform
                                        1. Morphological Skeleton
                                      2. Boundary Descriptors
                                        1. Simple Descriptors
                                          1. Length and Perimeter
                                            1. Diameter
                                              1. Major and Minor Axes
                                                1. Eccentricity
                                                2. Shape Numbers
                                                  1. Definition and Computation
                                                    1. Invariance Properties
                                                    2. Fourier Descriptors
                                                      1. Fourier Transform of Boundary
                                                        1. Normalization for Invariance
                                                          1. Reconstruction
                                                          2. Statistical Moments
                                                            1. Boundary Moments
                                                              1. Central Moments
                                                                1. Normalized Moments
                                                              2. Regional Descriptors
                                                                1. Simple Descriptors
                                                                  1. Area
                                                                    1. Perimeter
                                                                      1. Compactness
                                                                        1. Circularity
                                                                        2. Topological Descriptors
                                                                          1. Euler Number
                                                                            1. Connectivity Number
                                                                              1. Holes and Connected Components
                                                                              2. Texture Descriptors
                                                                                1. Statistical Approaches
                                                                                  1. First-Order Statistics
                                                                                    1. Mean
                                                                                      1. Variance
                                                                                        1. Skewness
                                                                                          1. Kurtosis
                                                                                          2. Second-Order Statistics
                                                                                            1. Co-occurrence Matrices
                                                                                              1. Contrast
                                                                                                1. Correlation
                                                                                                  1. Energy
                                                                                                    1. Homogeneity
                                                                                                    2. Higher-Order Statistics
                                                                                                    3. Structural Approaches
                                                                                                      1. Texture Primitives
                                                                                                        1. Spatial Relationships
                                                                                                          1. Texture Grammar
                                                                                                          2. Spectral Approaches
                                                                                                            1. Fourier Spectrum Features
                                                                                                              1. Gabor Filters
                                                                                                                1. Wavelet Features
                                                                                                              2. Moment Invariants
                                                                                                                1. Geometric Moments
                                                                                                                  1. Central Moments
                                                                                                                    1. Hu Moments
                                                                                                                      1. Zernike Moments
                                                                                                                    2. Dimensionality Reduction
                                                                                                                      1. Principal Component Analysis
                                                                                                                        1. Covariance Matrix Computation
                                                                                                                          1. Eigenvalue Decomposition
                                                                                                                            1. Feature Space Transformation
                                                                                                                              1. Dimensionality Selection
                                                                                                                              2. Linear Discriminant Analysis
                                                                                                                                1. Between-Class and Within-Class Scatter
                                                                                                                                  1. Fisher's Linear Discriminant
                                                                                                                                  2. Independent Component Analysis
                                                                                                                                    1. Statistical Independence
                                                                                                                                      1. Applications in Feature Extraction