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In electrical engineering and computer science, image processing is any form of signal processing for which the input is an image, such as photographs or frames of video; the output of image processing can be either an image or a set of characteristics or parameters related to the image. Most image-processing techniques involve treating the image as a two-dimensional signal and applying standard signal-processing techniques to it.

Image processing usually refers to digital image processing, but optical and analog image processing are also possible. This article is about general techniques that apply to all of them. The acquisition of images (producing the input image in the first place) is referred to as imaging.

Contents

Typical operations

The red, green, and blue color channels of a photograph by Sergei Mikhailovich Prokudin-Gorskii. The fourth image is a composite.

Among many other image processing operations are:

Applications

See also

Further reading

External links

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Simple English

In electrical engineering and computer science, Image processing is any form of processing for which the input is an image, such as photographs or frames of video. The output of image processing can be either an image or a set of characteristics or parameters related to the image.

It also means "Analyzing and manipulating images with a computer". Image processing is performed this three steps:
First, import images with an optical devices like a scanner or a camera or directly through digital processing.
Second, manipulate or analyze the images in some way. This step can include image improvement and data summary, or the images are analyzed to find rules that aren't seen by the human eyes. For example, meteorologists use this processing to analyze satellite photographs.
Last, output the result of image processing. The result might be the image changed by some way or it might be a report based on analysis or result of the images.

Image processing usually means "digital" image processing, but optical and analog image processing are also included in image processing.


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