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Showing content from http://reference.wolfram.com/language/guide/BasicImageManipulation.html below:

Basic Image Manipulation—Wolfram Language Documentation

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• Functions
  • AlphaChannel
  • ArrayFlatten
  • Blur
  • BorderDimensions
  • Chop
  • Clip
  • Darker
  • Drop
  • ImageAdd
  • ImageAdjust
  • ImageApply
  • ImageApplyIndexed
  • ImageAssemble
  • ImageClip
  • ImageCollage
  • ImageCompose
  • ImageCrop
  • ImageData
  • ImageEffect
  • ImageMultiply
  • ImagePad
  • ImagePartition
  • ImageReflect
  • ImageResize
  • ImageRestyle
  • ImageRotate
  • ImageScan
  • ImageSubtract
  • ImageTake
  • ImageTrim
  • ImageValue
  • ImageValuePositions
  • Lighter
  • PixelValue
  • PixelValuePositions
  • RemoveAlphaChannel
  • ReplaceImageValue
  • ReplacePixelValue
  • SetAlphaChannel
  • Sharpen
  • Take
  • Threshold
  • Thumbnail
  • Transpose
• Related Guides
  • Image Processing & Analysis
  • Image Representation
  • Color Processing
  • Image Filtering & Neighborhood Processing
  • Morphological Image Processing
  • Importing & Exporting Images
  • Geometric Operations
• Related Workflow Guides
  • Graphics And Images

The Wolfram Language's symbolic architecture makes it possible to treat images just like any other form of expression—applying functions to them, displaying and inputting them in notebooks, and including them directly in programs. The Wolfram Language provides a streamlined collection of functions for basic image manipulation, fully integrated with more advanced processing and its overall language and interactive capabilities.

ImageCrop — crop to a given size or remove boundaries

ImageTrim — remove the boundaries to include specified pixels

ImagePad — pad an image using various possible methods

ImageTake — take rows and columns of pixels in an image

BorderDimensions — use various methods to find borders on an image

ImageResize, Thumbnail — resize an image by resampling its raster

ImageRotate  ▪  ImageReflect

ImageCompose  ▪  ImageAssemble  ▪  ImageCollage  ▪  ...

ImageAdd  ▪  ImageSubtract  ▪  ImageMultiply  ▪  ...

ImageAdjust — adjust levels, brightness, contrast, gamma, etc.

ImageClip, Threshold — clip and chop pixel values

ImageEffect — special image and photographic effects

ImageRestyle — machine learning-based graphical style transfer

Sharpen  ▪  Blur  ▪  Lighter  ▪  Darker

ImagePartition  ▪  ImageAssemble

AlphaChannel — the alpha channel of an image

SetAlphaChannel  ▪  RemoveAlphaChannel

ImageCompose — alpha compositing

ImageValue, PixelValue — get the value of a pixel at the specified position

ReplaceImageValue, ReplacePixelValue — set value of pixels at specified positions

ImageValuePositions, PixelValuePositions — get pixel positions of a specified value

ImageApply, ImageApplyIndexed — apply an arbitrary function to each pixel value

ImageScan — scan over every pixel of an image, applying a function

ImageData — extract the raw data array for an image

Take  ▪  Drop  ▪  Transpose  ▪  Clip  ▪  Chop  ▪  Threshold  ▪  ArrayFlatten  ▪  ...

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