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Image processing method and scaling system

An image processing and zooming technology, applied in image data processing, graphics and image conversion, cathode ray tube indicators, etc., can solve the problems of long computing time, increased hardware cost, inconvenience, etc., to shorten computing time and reduce hardware cost Effect

Inactive Publication Date: 2008-03-19
PRINCETON TECHNOLOGY
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  • Claims
  • Application Information

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Problems solved by technology

In this way, when the image becomes larger or becomes a two-dimensional or multi-dimensional image, the number of multiplier / divider bits required by the hardware will also increase relatively, which not only increases the hardware cost, but also makes the calculation time longer, which is very inconvenient

Method used

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  • Image processing method and scaling system
  • Image processing method and scaling system
  • Image processing method and scaling system

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Embodiment Construction

[0041] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0042] In the present invention, the composition ratio originally used for linear interpolation is converted into a smaller value by means of calculation, so a multiplier with fewer digits can be used to achieve the above-mentioned multiplier / divider that requires more digits. operation effect. According to the embodiment of the present invention, assuming that the number of digits of the multiplier is n, these compositional ratios will be reduced from the original hundred-digit multiplication / division operation to 2 through a look-up table. n Multiplication / division operations for ranks. Since the number of bits of the multiplier is reduced to n and the divider is omitted, the hardware cost is relatively reduced, and the operation becomes simpl...

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Abstract

The present invention provides an image processing method and a zooming system which are used for zooming an image from a first resolution to a second resolution, wherein, PT, the pixel value of a target pixel T under the second resolution, consists of a certain number (k) of Pi, the pixel value of an original pixel i under the first resolution. The number k is equal to or larger than one, and the number i refers to an integer larger than or equal to one and smaller than or equal to k. The method comprises the following procedures of first, finding out a composition proportion Ri corresponding to the pixel value of each original pixel i, Pi; then performing certain calculation on the composition proportion Ri corresponding to Pi, the pixel value of each original pixel i, to obtain a corresponding weighted value Wi, wherein, the Wi is an integer between 1 and 2n, and the sum of Wi is 2n; and finally performing calculation on Pi, the pixel value of each original pixel i, and the corresponding weighted value Wi to produce the pixel value of the target pixel T, PT and complete the image processing. The present invention can reduce the complexity and the cost of hardware.

Description

technical field [0001] The present invention relates to an image processing method and system, in particular to an image processing method and system capable of reducing or enlarging image resolution. Background technique [0002] In image processing, image (image) reduction or enlargement is a widely used method in order to meet certain specific purposes. Image (image) resolution reduction refers to the conversion of an image from a higher resolution display to a lower resolution display, and image magnification refers to the conversion of an image from a lower resolution display to a higher High resolution display. When the original image is represented by an image with a new resolution and different pixels, since the resolution of the image changes, the pixel value of each pixel in the new image is the pixel value of one or more pixels in the original image. Composed according to different composition ratios. For example, assuming that the pixel value of point A' in th...

Claims

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Application Information

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IPC IPC(8): G09G5/391G06T3/40
Inventor 贾惠芬唐英原
Owner PRINCETON TECHNOLOGY
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