Difference between revisions of "Image processing"

Revision as of 16:00, 27 April 2016

In imaging science, image processing is processing of images using mathematical operations by using any form of signal processing.

Description

The input may be an image, a series of images, a photograph, a video frame, and so on.

The output of image processing may 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. Images are also processed as three-dimensional signals where the third-dimension being time or the z-axis.

Scope of article

Image processing usually refers to digital image processing, but optical and analog image processing also are 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.

Related topics

Closely related to image processing include computer graphics and computer vision.

In computer graphics, images are manually made from physical models of objects, environments, and lighting, instead of being acquired (via imaging devices such as cameras) from natural scenes, as in most animated movies.

Computer vision, on the other hand, is often considered high-level image processing out of which a machine/computer/software intends to decipher the physical contents of an image or a sequence of images (e.g., videos or 3D full-body magnetic resonance scans).

In modern sciences and technologies, images also gain much broader scopes due to the ever growing importance of scientific visualization (of often large-scale complex scientific/experimental data).

Examples include microarray data in genetic research, or real-time multi-asset portfolio trading in finance.

See also

• Computer graphics
• Imaging science
• Image sharpening
• Image smoothing
• Multidimensional systems
• Near sets
• Photo manipulation
• Signal processing

External links

• Image processing @ Wikipedia