IMImageQ16MBS.DecipherImage(passkey as string) as boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	11.3	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Converts cipher pixels to plain pixels.

Passkey: decipher cipher pixels with this passphrase.
Returns true on success.

IMImageQ16MBS.DeconstructImages as IMImageQ16MBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	6.1	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

DeconstructImages() compares each image with the next in a sequence and returns the minimum bounding region of all differences from the first image.

Returns nil on any error.
Sets the last exception property.

IMImageQ16MBS.DeleteImageAttribute(key as string) as Boolean

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	6.1	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

DeleteImageAttribute() deletes an attribute from the image.

Returns false on any error.

IMImageQ16MBS.Despeckle() as IMImageQ16MBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	5.1	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Reduces the speckle noise in an image while perserving the edges of the original image.

Sets the last exception property.
For more details please check the ImageMagick documentation.

IMImageQ16MBS.DestroyImage

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	5.1	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Releases the memory used for this image and sets handle to 0.

For more details please check the ImageMagick documentation.
The destructor will call this for you if release=true.

IMImageQ16MBS.DestroyImageAttributes

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	6.1	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Deallocates memory associated with the image attribute list.

IMImageQ16MBS.DestroyImageList

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	5.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Destroys the image list and sets the handle to 0.

For more details please check the ImageMagick documentation.
The destructor will call this for you if release=true.

IMImageQ16MBS.DestroyImageProfiles

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	5.2	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

Releases memory associated with an image profile map.

IMImageQ16MBS.DistortImage(DistortImageMethod as Integer, values() as Double, bestfit as boolean) as IMImageQ16MBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	12.5	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

DistortImage() distorts an image using various distortion methods, by mapping color lookups of the source image to a new destination image usally of the same size as the source image, unless 'bestfit' is set to true.

If 'bestfit' is enabled, and distortion allows it, the destination image is adjusted to ensure the whole source 'image' will just fit within the final destination image, which will be sized and offset accordingly. Also in many cases the virtual offset of the source image will be taken into account in the mapping.

If the '-verbose' control option has been set print to standard error the equicelent '-fx' formula with coefficients for the function, if practical.

A description of each parameter follows:
self: the image to be distorted.
m: the method of image distortion. ArcDistortion always ignores source image offset, and always 'bestfit' the destination image with the top left corner offset relative to the polar mapping center. Affine, Perspective, and Bilinear, do least squares fitting of the distrotion when more than the minimum number of control point pairs are provided. Perspective, and Bilinear, fall back to a Affine distortion when less than 4 control point pairs are provided. While Affine distortions let you use any number of control point pairs, that is Zero pairs is a No-Op (viewport only) distortion, one pair is a translation and two pairs of control points do a scale-rotate-translate, without any shearing.
values: arguments given.
bestfit: Attempt to 'bestfit' the size of the resulting image. This also forces the resulting image to be a 'layered' virtual canvas image. Can be overridden using 'distort:viewport' setting.

Extra Controls from Image meta-data (artifacts)...

• "verbose" Output to stderr alternatives, internal coefficents, and FX equivalents for the distortion operation (if feasible). This forms an extra check of the distortion method, and allows users access to the internal constants IM calculates for the distortion.
• "distort:viewport" Directly set the output image canvas area and offest to use for the resulting image, rather than use the original images canvas, or a calculated 'bestfit' canvas.
• "distort:scale" Scale the size of the output canvas by this amount to provide a method of Zooming, and for super-sampling the results.

Other settings that can effect results includ

• 'interpolate' For source image lookups (scale enlargements)
• 'filter' Set filter to use for area-resampling (scale shrinking). Set to 'point' to turn off and use 'interpolate' lookup instead

See also:

• DistortImage(DistortImageMethod as Integer, values() as Double, bestfit as boolean) as IMImageQ16MBS

IMImageQ16MBS.DistortImage(DistortImageMethod as Integer, values() as Double, bestfit as boolean) as IMImageQ16MBS

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
method	Image Magick	MBS GraphicsMagick Plugin	12.5	✅ Yes	✅ Yes	✅ Yes	✅ Yes	All

DistortImage() distorts an image using various distortion methods, by mapping color lookups of the source image to a new destination image usally of the same size as the source image, unless 'bestfit' is set to true.

If 'bestfit' is enabled, and distortion allows it, the destination image is adjusted to ensure the whole source 'image' will just fit within the final destination image, which will be sized and offset accordingly. Also in many cases the virtual offset of the source image will be taken into account in the mapping.

If the '-verbose' control option has been set print to standard error the equicelent '-fx' formula with coefficients for the function, if practical.

A description of each parameter follows:
self: the image to be distorted.
m: the method of image distortion. ArcDistortion always ignores source image offset, and always 'bestfit' the destination image with the top left corner offset relative to the polar mapping center. Affine, Perspective, and Bilinear, do least squares fitting of the distrotion when more than the minimum number of control point pairs are provided. Perspective, and Bilinear, fall back to a Affine distortion when less than 4 control point pairs are provided. While Affine distortions let you use any number of control point pairs, that is Zero pairs is a No-Op (viewport only) distortion, one pair is a translation and two pairs of control points do a scale-rotate-translate, without any shearing.
values: arguments given.
bestfit: Attempt to 'bestfit' the size of the resulting image. This also forces the resulting image to be a 'layered' virtual canvas image. Can be overridden using 'distort:viewport' setting.

Extra Controls from Image meta-data (artifacts)...

• "verbose" Output to stderr alternatives, internal coefficents, and FX equivalents for the distortion operation (if feasible). This forms an extra check of the distortion method, and allows users access to the internal constants IM calculates for the distortion.
• "distort:viewport" Directly set the output image canvas area and offest to use for the resulting image, rather than use the original images canvas, or a calculated 'bestfit' canvas.
• "distort:scale" Scale the size of the output canvas by this amount to provide a method of Zooming, and for super-sampling the results.

Other settings that can effect results includ

• 'interpolate' For source image lookups (scale enlargements)
• 'filter' Set filter to use for area-resampling (scale shrinking). Set to 'point' to turn off and use 'interpolate' lookup instead

See also:

• DistortImage(DistortImageMethod as Integer, values() as Double, bestfit as boolean) as IMImageQ16MBS