Image Comparison
[Image Package]

Enumerations
enum	Gan_PixelComparison {   GAN_IMAGES_IDENTICAL, GAN_IMAGE_FORMATS_DIFFERENT, GAN_IMAGE_SIZES_DIFFERENT, GAN_IMAGE_PIXELS_DIFFERENT,   GAN_IMAGES_SIMILAR, GAN_IMAGES_NOT_SIMILAR }
	Result of image comparison. More...
Functions
Gan_Bool	gan_image_compare (Gan_Image *image1, Gan_Image *image2, double pixel_thres, double proportion_thres, Gan_PixelComparison *result)
	Compares two images.

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Enumeration Type Documentation

enum Gan_PixelComparison

Result of image comparison. Enumeration values: GAN_IMAGES_IDENTICAL  the images are the same GAN_IMAGE_FORMATS_DIFFERENT  the formats of the images are different GAN_IMAGE_SIZES_DIFFERENT  the widths and/or heights of the images are different GAN_IMAGE_PIXELS_DIFFERENT  one or more pixels are different GAN_IMAGES_SIMILAR  ratio of different pixels <= similarity_thres GAN_IMAGES_NOT_SIMILAR  ratio of different pixels > similarity_thres

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Function Documentation

Gan_Bool gan_image_compare (  Gan_Image *  image1, Gan_Image *  image2, double  pixel_thres, double  proportion_thres, Gan_PixelComparison *  result )

Compares two images. Parameters: image1  The first image image2  The second image pixel_thres  The threshold to decide if two pixels are the same proportion_thres  Thhreshold on the proportion of similar pixels result  Pointer to result enumerated variable Returns: GAN_TRUE on success, GAN_FALSE on failure. Compares the format, dimensions and contents of two images. The pixel comparison is to within the provided threshold pixel_thres. If proportion_thres is greater than zero, the result is returned as GAN_IMAGES_SIMILAR if the ratio of different pixels is less than proportion_thres, or GAN_IMAGES_NOT_SIMILAR if the ratio is greater than proportion_thres. If proportion_thres if zero, a single different pixel causes GAN_IMAGE_PIXELS_DIFFERENT to be returned. If all pixel differences are within pixel_thres then GAN_IMAGES_IDENTICAL is returned in result.

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