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Image *CharcoalImage( const Image *image, const double radius, const double sigma, ExceptionInfo *exception );
Method CharcoalImage creates a new image that is a copy of an existing one with the edge highlighted. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.
The format of the CharcoalImage method is:
Image *CharcoalImage( const Image *image, const double radius, const double sigma, ExceptionInfo *exception );
Image *ColorizeImage( const Image *image, const char *opacity, const PixelPacket target, ExceptionInfo *exception );
ColorizeImage() blends the fill color with each pixel in the image. A percentage blend is specified with opacity. Control the application of different color components by specifying a different percentage for each component (e.g. 90/100/10 is 90% red, 100% green, and 10% blue).
The format of the ColorizeImage method is:
Image *ColorizeImage( const Image *image, const char *opacity, const PixelPacket target, ExceptionInfo *exception );
MagickPassFail ColorMatrixImage( Image *image, const unsigned int order, const double *color_matrix );
ColorMatrixImage() applies a color matrix to the image channels. The user supplied matrix may be of order 1 to 5 (1x1 through 5x5) and is used to update the default identity matrix:
1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1
where the first four columns represent the ratio of the color (red, green, blue) and opacity components incorporated in the output summation. The first four rows represent the summations for red, green, blue, and opacity. The last row is a dummy row and is not used. The last column represents a constant value (expressed as a ratio of MaxRGB) to be added to the row summation. The following is a summary of how the matrix is applied:
r' = r*m[0,0] + g*m[1,0] + b*m[2,0] + o*m[3,0] + MaxRGB*m[4,0] g' = r*m[0,1] + g*m[1,1] + b*m[2,1] + o*m[3,1] + MaxRGB*m[4,1] b' = r*m[0,2] + g*m[1,2] + b*m[2,2] + o*m[3,2] + MaxRGB*m[4,2] o' = r*m[0,3] + g*m[1,3] + b*m[2,3] + o*m[3,3] + MaxRGB*m[4,3]
The format of the ColorMatrixImage method is:
MagickPassFail ColorMatrixImage( Image *image, const unsigned int order, const double *color_matrix );
Image *ImplodeImage( const Image *image, const double amount, ExceptionInfo *exception );
Method ImplodeImage creates a new image that is a copy of an existing one with the image pixels "implode" by the specified percentage. It allocates the memory necessary for the new Image structure and returns a pointer to the new image.
The format of the ImplodeImage method is:
Image *ImplodeImage( const Image *image, const double amount, ExceptionInfo *exception );
Image *MorphImages( const Image *image, const unsigned long number_frames, ExceptionInfo *exception );
The MorphImages() method requires a minimum of two images. The first image is transformed into the second by a number of intervening images as specified by frames.
The format of the MorphImage method is:
Image *MorphImages( const Image *image, const unsigned long number_frames, ExceptionInfo *exception );
Image *OilPaintImage( const Image *image, const double radius, ExceptionInfo *exception );
OilPaintImage() applies a special effect filter that simulates an oil painting. Each pixel is replaced by the most frequent color occurring in a circular region defined by radius.
The format of the OilPaintImage method is:
Image *OilPaintImage( const Image *image, const double radius, ExceptionInfo *exception );
unsigned int SolarizeImage( Image *image, const double threshold );
SolarizeImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by selectively exposing areas of photo sensitive paper to light. Threshold ranges from 0 to MaxRGB and is a measure of the extent of the solarization. False is returned if an error is encountered.
The format of the SolarizeImage method is:
unsigned int SolarizeImage( Image *image, const double threshold );
A description of each parameter follows:
Image *SteganoImage( const Image *image, Image *watermark, ExceptionInfo *exception );
Use SteganoImage() to hide a digital watermark within the image. Recover the hidden watermark later to prove that the authenticity of an image. Offset defines the start position within the image to hide the watermark.
The format of the SteganoImage method is:
Image *SteganoImage( const Image *image, Image *watermark, ExceptionInfo *exception );
Image *StereoImage( const Image *image, const Image *offset_image, ExceptionInfo *exception );
StereoImage() combines two images and produces a single image that is the composite of a left and right image of a stereo pair. Special red-green stereo glasses are required to view this effect.
The format of the StereoImage method is:
Image *StereoImage( const Image *image, const Image *offset_image, ExceptionInfo *exception );
Image *SwirlImage( const Image *image, double degrees, ExceptionInfo *exception );
SwirlImage() swirls the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.
The format of the SwirlImage method is:
Image *SwirlImage( const Image *image, double degrees, ExceptionInfo *exception );
Image *WaveImage( const Image *image, const double amplitude, const double wave_length, ExceptionInfo *exception );
The WaveImage() filter creates a "ripple" effect in the image by shifting the pixels vertically along a sine wave whose amplitude and wavelength is specified by the given parameters.
The format of the WaveImage method is:
Image *WaveImage( const Image *image, const double amplitude, const double wave_length, ExceptionInfo *exception );
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