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Page last modified 06:26, 15 Apr 2009 by SteveB
MindTouch Community Portal > Deki - English > Extensions > ImageMagick Image Effects
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ImageMagick Image Effects

Vendor MindTouch
Type Extension
Categories Images
Requires MindTouch 1.8.2 or later
OS Restriction None
Status Stable
License Free/Open Source
SID (service id) sid://mindtouch.com/2007/06/imagemagick
Assembly mindtouch.deki.services

 

Description

This extension contains functions for manipulating images.

See also How to add an extension, Using the Extension Dialog, Learn about DekiScript, Extensions Directory.

Configuration:

Before the ImageMagick service can be used, it must be configured with the location of the ImageMagick application.  Download the latest version here.

Config Key Description
imagemagick-path Path to convert application.

Functions:

IMPORTANT:  Function availability depends on the installed version of ImageMagick.

  1. image.blend
  2. image.blur
  3. image.charcoal
  4. image.emboss
  5. image.fittosize
  6. image.flip
  7. image.flop
  8. image.outline
  9. image.paint
  10. image.polaroid
  11. image.raise
  12. image.resize
  13. image.rotate
  14. image.sink
  15. image.slideshow
  16. image.swirl
  17. image.vignette
  18. image.wave

image.blend(image : uri) : uri

Generate image with a soft rectangular border.

Parameters:

Name Type Description
image uri Image uri

Samples:

  Output

To embed an image with the blend effect:

 {{ image.blend("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageBlend1.JPG

To embed an imaged with both blend and resize effects:

{{ image.resize( image.blend("http://wiki.opengarden.org/@api/deki/files/1154"), 50, 100) }}
./ImageBlend2.JPG

 

image.blur(image : uri, radius : num, sigma : num) : uri

Blur image.

Parameters:

Name Type Description
image uri Image uri
radius num Optional.  Radius (default: 0)
sigma num Optional.  Sigma (default: 1)

Samples:

  Output

To embed an image with the default blur effect:

 {{ image.blur("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageBlur1.JPG

 

image.charcoal(image : uri, kernel : num) : uri

Simulate image painted with charcoal.

Parameters:

Name Type Description
image uri Image uri
kernel num Optional.  Kernel size, must be an odd number (default: 3)

Samples:

  Output

To embed an image with the default charcoal effect:

{{ image.charcoal("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageCharcoal1.JPG

To embed an image with a kernel size 5 charcoal effect:

{{ image.charcoal("http://wiki.opengarden.org/@api/deki/files/1154", 5) }}
./ImageCharcoal2.JPG

 

image.emboss(image : uri, radius : num) : uri

Generate embossed image.

Parameters:

Name Type Description
image uri Image uri
radius num Optional.  Radius (default: 1)

Samples:

  Output

To embed an image with the default emboss effect:

{{ image.emboss("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageEmboss1.JPG

To embed an image with a radius size 5 charcoal effect:

{{ image.emboss("http://wiki.opengarden.org/@api/deki/files/1154", 5) }}
./ImageEmboss2.JPG

 

image.fittosize(image : uri, width : num, height : num) : uri

Fit image to dimensions and preserve its aspect ratio

Parameters:

Name Type Description
image uri Image uri
width num Optional.  Width (max: 500)
height num Optional.  Height (max: 500)

Samples:

  Output

To embed an image that is fit a size of 50 by 50:

{{ image.fittosize("http://wiki.opengarden.org/@api/deki/files/1154", 50, 50) }}
./ImageFitToSize1.JPG

To embed an image that is flipped verically and then fit to a size of 50 by 50:

{{ image.fittosize( image.flip("http://wiki.opengarden.org/@api/deki/files/1154"), 50, 50) }}
./ImageFitToSize2.JPG

 

image.flip(image : uri) : uri

Flip image vertically.

Parameters:

Name Type Description
image uri Image uri

Samples:

  Output

To embed an image that is flipped verically:

{{ image.flip("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageFlip1.JPG

 

image.flop(image : uri) : uri

Flip image horizontally.

Parameters:

Name Type Description
image uri Image uri

Samples:

  Output

To embed an image that is flipped horizontally:

{{ image.flop("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageFlop1.JPG

To embed an image that is flipped vertically then horizonally:

{{ image.flop(image.flip("http://wiki.opengarden.org/@api/deki/files/1154")) }}
./ImageFlop2.JPG

 

image.outline(image : uri) : uri

Generate outline of image.

Parameters:

Name Type Description
image uri Image uri

Samples:

  Output

To embed an image with the outline effect:

{{ image.outline("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageOutline1.JPG

 

image.paint(image : uri, radius : num) : uri

Simulate image painted with color blobs.

Parameters:

Name Type Description
image uri Image uri
radius num Optional.  Radius (default: 1)

Samples:

  Output

To embed an image with the paint effect:

{{ image.paint("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImagePaint1.JPG

 

image.polaroid(image : uri, angle : num, caption : str) : uri

Generate image with white border and optional sub-title.  This function is not supported on Debian.

Parameters:

Name Type Description
image uri Image uri
angle num Optional.  Rotation angle (default: 3)
caption str Optional.  Caption (default: nil)

Samples:

  Output

To embed an image with the default polaroid effect:

{{ image.polaroid("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImagePolaroid1.JPG

To embed an image with a 15 degree rotation and MindTouch caption polaroid effect:

{{ image.polaroid("http://wiki.opengarden.org/@api/deki/files/1154", 15, "MindTouch") }}

./ImagePolaroid2.JPG

To embed an image with two 15 degree rotation and MindTouch caption polaroid effects:

{{ image.polaroid(image.polaroid("http://wiki.opengarden.org/@api/deki/files/1154", 15, "MindTouch"), 15, "MindTouch") }}

./ImagePolaroid3.JPG

 

image.raise(image : uri, width : num) : uri

Generate image with a raised border.

Parameters:

Name Type Description
image uri Image uri
width num Optional.  Border width (default: 8)

Samples:

  Output

To embed an image with the default raise effect:

{{ image.raise("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageRaise1.JPG

To embed an image with a border width 3 raise effect:

{{ image.raise("http://wiki.opengarden.org/@api/deki/files/1154", 3) }}

./ImageRaise2.JPG

 

image.resize(image : uri, width : num, height : num) : uri

Resize image to arbitrary dimensions.

Parameters:

Name Type Description
image uri Image uri
width num Optional.  Width (max: 500)
height num Optional.  Height (max: 500)

Samples:

  Output

To embed an image resized to 50 by 100:

{{ image.resize("http://wiki.opengarden.org/@api/deki/files/1154", 50, 100) }}
./ImageResize1.JPG

 

image.rotate(image : uri, angle : num) : uri

Rotate image.

Parameters:

Name Type Description
image uri Image uri.
angle num Optional.  Rotation angle.

Samples:

  Output

To embed an image rotated by 15 degrees:

{{ image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 15) }}
./ImageRotate1.JPG

To embed an image rotated by 15 degrees and resized to 50 by 50:

{{ image.resize(image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 15), 50, 50) }}

./ImageRotate2.JPG

 

image.sink(image : uri, width : num) : uri

Generate image with a sunken border.

Parameters:

Name Type Description
image uri Image uri.
width num Optional.  Border width (default: 8)

Samples:

  Output

To embed an image with the default sink effect:

{{ image.sink("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageSink1.JPG

To embed an image with a border width 3 sink effect:

{{ image.sink("http://wiki.opengarden.org/@api/deki/files/1154", 3) }}

./ImageSink2.JPG

 

image.slideshow(uris : list, width : num, height : num, interval : num, effect : str) : xml

Embed a slideshow of images.

Parameters:

Name Type Description
uris list List of image URIs
width num Optional.  Slideshow width (default: 300px)
height num Optional.  Slideshow height (default: 300px)
interval num Optional.  Interval in seconds (default: 5.0)
effect str Optional.  Slideshow effect; one of {slideright, slideleft, slideup, squeezeleft, squeezeright, squeezeup, squeezedown, fadeout} (default: 'fadeout')

Samples:

  Output

To embed a slideshow that displays an image at four rotation angles:

{{ image.slideshow(
    [image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 0),
     image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 90),
     image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 180),
     image.rotate("http://wiki.opengarden.org/@api/deki/files/1154", 270) 
    ], 50, 50, 2) }}
./Slideshow.gif

 

image.swirl(image : uri, angle : num) : uri

Twist the image from the center outward.

Parameters:

Name Type Description
image uri Image uri.
angle num Optional.  Swirl angle (default: 45)

Samples:

  Output

To embed an image with the default swirl effect:

{{ image.swirl("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageSwirl1.JPG

To embed an image with a 180 degree swirl effect:

{{ image.swirl("http://wiki.opengarden.org/@api/deki/files/1154", 180) }}

./ImageSwirl2.JPG

 

image.vignette(image : uri, radius : num, sigma : num) : uri

Generate image with a soft oval border.

Parameters:

Name Type Description
image uri Image uri.
radius num Optional.  Radius (default: 0)
sigma num Optional.  Sigma (default: 4)

Samples:

  Output

To embed an image with the default vignette effect:

{{ image.vignette("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageVignette1.JPG

 

image.wave(image : uri, amplitude : num, length : num) : uri

Generate image with a wave.

Parameters:

Name Type Description
image uri Image uri.
amplitude num Optional.  Wave amplitude (default: 5)
length num Optional.  Wave length (default: 50)

Samples:

  Output

To embed an image with the default wave effect:

{{ image.wave("http://wiki.opengarden.org/@api/deki/files/1154") }}
./ImageWave1.JPG

 

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