Image processing
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Image processing is any form of information processing for which the input is an image, such as photographs or frames of video; the output is not necessarily an image, but can be for instance a set of features of the image. Most image-processing techniques involve treating the image as a two-dimensional signal and applying standard signal-processing techniques to it.
Typical problems
- Geometric transformations such as enlargement, reduction, and rotation
- Color corrections such as brightness and contrast adjustments, quantization, or conversion to a different color space
- Registration (or alignment) of two or more images
- Combination of two or more images, e.g. into an average, blend, difference, or image composite
- Interpolation, demosaicing, and recovery of a full image from a RAW image format like a Bayer filter pattern
- Segmentation of the image into regions
- Image editing and digital retouching
- Extending dynamic range by combining differently exposed images (generalized signal averaging of Wyckoff sets)
and many more.
Besides static two-dimensional images, the field also covers the processing of time-varying signals such as video and the output of tomographic equipment. Some techniques, such as morphological image processing, are specific to binary or grayscale images.
Applications
See also
References
- The Image Processing Handbook by John C. Russ, ISBN 0849372542 (2006)
- Fundamentals of Image Processing by Ian T. Young, Jan J. Gerbrands, Lucas J. Van Vliet, Paperback, ISBN 90-75691-01-7 (1995)
- Image Analysis and Mathematical Morphology by Jean Serra, ISBN 0126372403 (1982)
- Image Analysis and Mathematical Morphology, Volume 2: Theoretical Advances by Jean Serra, ISBN 0-12-637241-1 (1988)
- ''Scale-Space Theory in Computer Vision'' by Tony Lindeberg, ISBN 0-7923-9418-6 (1994)
- Front-End Vision and Multi-Scale Image Analysis by Bart M. ter Haar Romeny, Paperback, ISBN 1-4020-1507-0 (2003)
- Geometry-Driven Diffusion in Computer Vision by Bart M. ter Haar Romeny (Ed.), ISBN 0792330870{ (1994)
- Digital Image Processing by Rafael C. Gonzalez, Richard E. Woods, ISBN 0-201-50803-6 (1992)
- Digital Image Processing by William K. Pratt, Paperback, ISBN 0-471-01888-0 (1978)
External links