Noise Reduction and Edge Detection in Color Images
Bogdan Smolka and Anastasios N. Venetsanopoulos

4.1 Introduction ...............................................................................................................
4.2 Noise Reduction in Color Images .......................................................................................
      4.2.1 Vector Median-Based Filters .....................................................................................
      4.2.2 Fuzzy Adaptive Filters ............................................................................................
      4.2.3 Switching Filters ..................................................................................................
      4.2.4 Application of Anisotropic Diffusion to Color Images ........................................................
4.3 Edge Detection in Color Images ........................................................................................
      4.3.1 Vector Gradient Operators ......................................................................................
      4.3.2 Vector Field Approach ............................................................................................
      4.3.3 Vector Order-Statistics Edge Operators ........................................................................
      4.3.4 Edge Detection Based on Hypercomplex Convolution ........................................................
      4.3.5 Evaluation of the Edge Detection Efficiency ...................................................................
4.4 Concluding Remarks .....................................................................................................
Acknowledgement ............................................................................................................
References ....................................................................................................................