Often used image processing functionality is typically implemented as a global (C++) function. The global functions are easier to use as they hide the general parameter handling mechanism and other complex issues associated with the calling of generic image operations via HxImageRep member functions. Global image functions provides an overview of the current set of global C++ functions.

Next, we will give some examples of how to use the global functions and indicate how they are implemented using generic functions so that you get an idea of how to do this yourself.

• Reading images from file
• An example of a binary pixel operation: Adding images
• An example of a unary pixel operation: Thresholding images
• An example of a generalized convolution: Uniform filter
• An example of a generalized convolution: Convolution
• An example of a generalized convolution: Erosion

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