# MagickCore, C API: Compare an Image to a Reconstructed Image @ ImageMagick
ImageMagick® is a software suite to create, edit, compose, or convert bitmap images. It can read and write images in a variety of formats (over 200) including PNG, JPEG, JPEG-2000, GIF, WebP, Postscript, PDF, and SVG. Use ImageMagick to resize, flip, mirror, rotate, distort, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.
Author: ImageMagick Studio LLC
Keywords: magickcore, c, api:, compare, an, image, to, a, reconstructed, image, ImageMagick, PerlMagick, image processing, image, photo, software, Magick++, OpenMP, convert

CompareImagesCommand

## 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.