Chapter 4: Advanced image processing

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This chapter describes different advanced image processing techniques.

• Advanced image processing in general
• Custom spatial filters
• • Finite Impulse Response (FIR) filters
  • Infinite Impulse Response (IIR) filters
  • An example
• Custom morphological operations
• • Defining your own structuring element
  • Erosion and dilation
  • • Using standard erosion and dilation
    • An example
  • Thinning and thickening
  • Top and bottom hat
  • Matching
  • Searching for hits or misses
• Distance transform
• • City Block transform
  • Chessboard transform
  • Chamfer 3-4 transform
• Watershed transformations
• • Using watersheds to separate touching objects
  • Using watersheds to separate objects from their background
  • Minimum grayscale variation of a catchment basin
  • Using marker images
  • • Non-labeled marker images
    • Labeled marker images
  • Style of the watershed lines
  • Exact versus straight
  • Skipping the last level
  • Filling the source
• Connectivity mapping
• • Using the connectivity code
  • Locating different types of points
  • Example
• Labeling
• Polar-to-rectangular and rectangular-to-polar transforms
• Warping
• • First-order polynomial warpings
  • Perspective polynomial warpings
  • Polar-to-rectangular, rectangular-to-polar, and custom warpings
  • Interpolation modes
  • Points outside the source buffer
  • Transforming coordinate lists
  • Warping example
• Finding dominant image orientations
• • Customizing your find orientation image processing context
  • Using the find orientation image processing results
  • An example
• Establishing a correlation