Fundamental Steps Of Digital Image Processing

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DIGITAL IMAGE PROCESSING
Abstract
This paper describes the basic technological blee of Digital Image Processing . Image processing is basically classified in to three categories: The Rectification and Restoration, Enhancement and Information Extraction. The Rectification deals with incipient processing of raw image data to correct for geometric distortion, to calibrate the data radiometrically and to eliminate noise present in the data. The enhancement procedures are applied to image data in order to display the data for subsequent visual interpretation effectively. It involves various techniques for increasing the visual distinction between features in a scene. The objective of the information extraction operations is to replace visual analysis …show more content…

Image Acquisition: This is the first step of the fundamental steps of digital image processing. Image acquisition could be as simple as being given an image that is already in the digital form. Generally, the image acquisition stage involves the preprocessing, such as scaling etc.
2. Image Enhancement: Image enhancement is among the simplest and most appealing areas of the digital image processing. Basically, the idea behind enhancement techniques is to bring out detail that is esoteric, or simply to highlight certain features of interest in an image. Such as, changing brightness, lightness and contrast etc. 3. Image Restoration: Image restoration is an area that also deals with improving the appearance of the given image. However unlike enhancement, which is subjective, image restoration is objective, in the sense that the restoration techniques tends to be based on mathematical or probabilistic models of image degradation.
4. Color Image Processing: Color image processing is an area that has been gaining its importance because of the major increase in the use of digital images over the Internet. This may include color modeling and processing in a digital …show more content…

Knowledge Base: Knowledge may be as simple as detailing regions of an image where the information of interest is known to be located, thus limiting the search that has to be conducted in seeking that information. The knowledge base also can be quite complex, such as an interrelated list of all major possible defects in a materials inspection problem or an image database containing high-resolution satellite images of a region in connection with change-detection applications.
Applications of Digital Image Processing:
• Digital cameras generally include specialized digital image processing hardware – either dedicated chips or added circuitry on other chips – to convert the raw data from their image sensor into a color-corrected image in a standard image file format. Images from digital cameras can be further processed to improve their quality or to create desired special effects. This additional processing is typically executed by special software programs that can manipulate the images in a variety of ways.
• Artistic effects are used to make images more visually appealing, to add special effects and to make composite images.
• Image processing techniques are used extensively by law enforcers Number plate recognition for speed cameras/automated toll system, Fingerprint recognition . Enhancement of CCTV

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