CompareImagesCommand
CompareImagesCommand() compares two images and returns the difference between them as a distortion metric and as a new image visually annotating their differences.
The format of the CompareImagesCommand method is:
MagickBooleanType CompareImagesCommand(ImageInfo *image_info,int argc, char **argv,char **metadata,ExceptionInfo *exception)
A description of each parameter follows:
- image_info
- the image info.
- argc
- the number of elements in the argument vector.
- argv
- A text array containing the command line arguments.
- metadata
- any metadata is returned here.
- exception
- return any errors or warnings in this structure.