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Module fx + Methods
-AddNoiseImage
+AddNoiseImage
AddNoiseImage() adds random noise to the image.
+AddNoiseImage() adds random noise to the image.
The format of the AddNoiseImage method is:
@@ -184,26 +194,26 @@ _8c.html" target="source" name="AddNoiseImage">AddNoiseImage const NoiseType noise_type,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
channel
-the channel type.
the channel type.
noise_type
-The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.
The type of noise: Uniform, Gaussian, Multiplicative, Impulse, Laplacian, or Poisson.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
BlueShiftImage
+BlueShiftImage
BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.
+BlueShiftImage() mutes the colors of the image to simulate a scene at nighttime in the moonlight.
The format of the BlueShiftImage method is:
@@ -212,23 +222,23 @@ _8c.html" target="source" name="BlueShiftImage">BlueShiftImage ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
factor
-the shift factor.
the shift factor.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
CharcoalImage
+CharcoalImage
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.
+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:
@@ -237,26 +247,26 @@ _8c.html" target="source" name="CharcoalImage">CharcoalImage const double sigma,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
radius
-the radius of the pixel neighborhood.
the radius of the pixel neighborhood.
sigma
-the standard deviation of the Gaussian, in pixels.
the standard deviation of the Gaussian, in pixels.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
ColorizeImage
+ColorizeImage
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).
+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:
@@ -265,26 +275,26 @@ _8c.html" target="source" name="ColorizeImage">ColorizeImage const PixelPacket colorize,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
opacity
-A character string indicating the level of opacity as a percentage.
A character string indicating the level of opacity as a percentage.
colorize
-A color value.
A color value.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
ColorMatrixImage
+ColorMatrixImage
ColorMatrixImage() applies color transformation to an image. This method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255).
+ColorMatrixImage() applies color transformation to an image. This method permits saturation changes, hue rotation, luminance to alpha, and various other effects. Although variable-sized transformation matrices can be used, typically one uses a 5x5 matrix for an RGBA image and a 6x6 for CMYKA (or RGBA with offsets). The matrix is similar to those used by Adobe Flash except offsets are in column 6 rather than 5 (in support of CMYKA images) and offsets are normalized (divide Flash offset by 255).
The format of the ColorMatrixImage method is:
@@ -293,23 +303,23 @@ _8c.html" target="source" name="ColorMatrixImage">ColorMatrixImage const KernelInfo *color_matrix,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
color_matrix
-the color matrix.
the color matrix.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
FxImage
+FxImage
FxImage() applies a mathematical expression to the specified image.
+FxImage() applies a mathematical expression to the specified image.
The format of the FxImage method is:
@@ -320,26 +330,26 @@ _8c.html" target="source" name="FxImage">FxImage const char *expression,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
channel
-the channel.
the channel.
expression
-A mathematical expression.
A mathematical expression.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
ImplodeImage
+ImplodeImage
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.
+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:
@@ -348,26 +358,26 @@ _8c.html" target="source" name="ImplodeImage">ImplodeImage ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
implode_image
-Method ImplodeImage returns a pointer to the image after it is implode. A null image is returned if there is a memory shortage.
Method ImplodeImage returns a pointer to the image after it is implode. A null image is returned if there is a memory shortage.
image
-the image.
the image.
amount
-Define the extent of the implosion.
Define the extent of the implosion.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
The MorphImages
+The MorphImages
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 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:
@@ -376,23 +386,23 @@ _8c.html" target="source" name="The MorphImages">The MorphImages ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
number_frames
-Define the number of in-between image to generate. The more in-between frames, the smoother the morph.
Define the number of in-between image to generate. The more in-between frames, the smoother the morph.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
PlasmaImage
+PlasmaImage
PlasmaImage() initializes an image with plasma fractal values. The image must be initialized with a base color and the random number generator seeded before this method is called.
+PlasmaImage() initializes an image with plasma fractal values. The image must be initialized with a base color and the random number generator seeded before this method is called.
The format of the PlasmaImage method is:
@@ -401,26 +411,26 @@ _8c.html" target="source" name="PlasmaImage">PlasmaImage size_t attenuate,size_t depth) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
segment
-Define the region to apply plasma fractals values.
Define the region to apply plasma fractals values.
attenuate
-Define the plasmattenuation factor.
Define the plasma attenuation factor.
depth
-Limit the plasma recursion depth.
Limit the plasma recursion depth.
PolaroidImage
+PolaroidImage
PolaroidImage() simulates a Polaroid picture.
+PolaroidImage() simulates a Polaroid picture.
The format of the AnnotateImage method is:
@@ -429,26 +439,26 @@ _8c.html" target="source" name="PolaroidImage">PolaroidImage const double angle,ExceptionInfo exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
draw_info
-the draw info.
the draw info.
angle
-Apply the effect along this angle.
Apply the effect along this angle.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
MagickSepiaToneImage
+MagickSepiaToneImage
MagickSepiaToneImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.
+MagickSepiaToneImage() applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning. Threshold ranges from 0 to QuantumRange and is a measure of the extent of the sepia toning. A threshold of 80 is a good starting point for a reasonable tone.
The format of the SepiaToneImage method is:
@@ -457,23 +467,23 @@ _8c.html" target="source" name="MagickSepiaToneImage">MagickSepiaToneImage -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
threshold
-the tone threshold.
the tone threshold.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
ShadowImage
+ShadowImage
ShadowImage() simulates a shadow from the specified image and returns it.
+ShadowImage() simulates a shadow from the specified image and returns it.
The format of the ShadowImage method is:
@@ -483,32 +493,32 @@ _8c.html" target="source" name="ShadowImage">ShadowImage ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
opacity
-percentage transparency.
percentage transparency.
sigma
-the standard deviation of the Gaussian, in pixels.
the standard deviation of the Gaussian, in pixels.
x_offset
-the shadow x-offset.
the shadow x-offset.
y_offset
-the shadow y-offset.
the shadow y-offset.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
SketchImage
+SketchImage
SketchImage() simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SketchImage() selects a suitable radius for you. Angle gives the angle of the sketch.
+SketchImage() simulates a pencil sketch. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). For reasonable results, radius should be larger than sigma. Use a radius of 0 and SketchImage() selects a suitable radius for you. Angle gives the angle of the sketch.
The format of the SketchImage method is:
@@ -517,29 +527,29 @@ _8c.html" target="source" name="SketchImage">SketchImage const double sigma,const double angle,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
radius
-the radius of the Gaussian, in pixels, not counting the center pixel.
the radius of the Gaussian, in pixels, not counting the center pixel.
sigma
-the standard deviation of the Gaussian, in pixels.
the standard deviation of the Gaussian, in pixels.
angle
-Apply the effect along this angle.
Apply the effect along this angle.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
SolarizeImage
+SolarizeImage
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 QuantumRange and is a measure of the extent of the solarization.
+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 QuantumRange and is a measure of the extent of the solarization.
The format of the SolarizeImage method is:
@@ -547,20 +557,20 @@ _8c.html" target="source" name="SolarizeImage">SolarizeImage MagickBooleanType SolarizeImage(Image *image,const double threshold) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
threshold
-Define the extent of the solarization.
Define the extent of the solarization.
SteganoImage
+SteganoImage
SteganoImage() hides 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.
+SteganoImage() hides 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:
@@ -569,23 +579,23 @@ _8c.html" target="source" name="SteganoImage">SteganoImage ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
watermark
-the watermark image.
the watermark image.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
StereoAnaglyphImage
+StereoAnaglyphImage
StereoAnaglyphImage() 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.
+StereoAnaglyphImage() 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 StereoAnaglyphImage method is:
@@ -597,30 +607,30 @@ _8c.html" target="source" name="StereoAnaglyphImage">StereoAnaglyphImage -A description of each parameter follows:
+A description of each parameter follows:
left_image
-the left image.
the left image.
right_image
-the right image.
the right image.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
x_offset
-amount, in pixels, by which the left image is offset to the right of the right image.
amount, in pixels, by which the left image is offset to the right of the right image.
y_offset
-amount, in pixels, by which the left image is offset to the bottom of the right image.
amount, in pixels, by which the left image is offset to the bottom of the right image.
SwirlImage
+SwirlImage
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.
+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:
@@ -629,23 +639,23 @@ _8c.html" target="source" name="SwirlImage">SwirlImage ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
degrees
-Define the tightness of the swirling effect.
Define the tightness of the swirling effect.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
TintImage
+TintImage
TintImage() applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))
+TintImage() applies a color vector to each pixel in the image. The length of the vector is 0 for black and white and at its maximum for the midtones. The vector weighting function is f(x)=(1-(4.0*((x-0.5)*(x-0.5))))
The format of the TintImage method is:
@@ -654,26 +664,26 @@ _8c.html" target="source" name="TintImage">TintImage const PixelPacket tint,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
opacity
-A color value used for tinting.
A color value used for tinting.
tint
-A color value used for tinting.
A color value used for tinting.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
VignetteImage
+VignetteImage
VignetteImage() softens the edges of the image in vignette style.
+VignetteImage() softens the edges of the image in vignette style.
The format of the VignetteImage method is:
@@ -682,29 +692,29 @@ _8c.html" target="source" name="VignetteImage">VignetteImage const double sigma,const ssize_t x,const ssize_t y,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
radius
-the radius of the pixel neighborhood.
the radius of the pixel neighborhood.
sigma
-the standard deviation of the Gaussian, in pixels.
the standard deviation of the Gaussian, in pixels.
x, y
-Define the x and y ellipse offset.
Define the x and y ellipse offset.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.
WaveImage
+WaveImage
WaveImage() 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.
+WaveImage() 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:
@@ -713,16 +723,16 @@ _8c.html" target="source" name="WaveImage">WaveImage const double wave_length,ExceptionInfo *exception) -A description of each parameter follows:
+A description of each parameter follows:
image
-the image.
the image.
amplitude, wave_length
-Define the amplitude and wave length of the sine wave.
Define the amplitude and wave length of the sine wave.
exception
-return any errors or warnings in this structure.
return any errors or warnings in this structure.