Image interpolation method and device based on bicubic Booleans and form

An image and form technology, applied in the field of image processing, can solve problems such as blurring of high-resolution images, and achieve the effects of high numerical stability, clear images, and high computing efficiency

Inactive Publication Date: 2016-03-23
SUN YAT SEN UNIV
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Problems solved by technology

[0003] Most of the traditional image interpolation methods are based on continuous function approximation theory, such as nearest neighbor interpolation, bilinear interpolation, bicubic interpolation and spline interpolation. The smoothing of the continuous interpolation function produces a transition band of gray values ​​that causes blurring at the edges of the high-resolution image

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  • Image interpolation method and device based on bicubic Booleans and form
  • Image interpolation method and device based on bicubic Booleans and form
  • Image interpolation method and device based on bicubic Booleans and form

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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0037] figure 1 is a schematic flow chart of an image interpolation method based on a bicubic Boolean sum form in an embodiment of the present invention, such as figure 1 As shown, the method includes:

[0038] S101, inputting an image with a blurred area;

[0039] S102, select and determine the blurred area to be repaired;

[0040] S103, calculating gradients and twist vectors at pixels in the blurred area to be repaired;

[0041] S104. Obtain four points that...

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Abstract

The invention discloses an image interpolation method and device based on the bicubic Booleans and form. The method comprises that an image with a fuzzy area is input; the fuzzy area determined to be restored is selected; the pixel gradient and twisting vector in the fuzzy area which needs restoring are calculated; four points which needs interpolation are obtained; and image data of the four points is refined in the interpolation subdivision method based on the bicubic Booleans and form. According to the invention, the linear subdivision method is used, the operation efficiency and the value stability are very high, the subdivision method is modified by a conns curve, the image is prevented from unnecessary interpolation at the edge by utilizing a block threshold processing method, the modified refined curve is more approximate to image data, and the edge is maintained; and the smooth curve can be also generated in the image smooth area, the image smooth area is kept smooth, the edges is kept sharp, and the image is more clear.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an image interpolation method and device based on a bicubic Boolean sum form. Background technique [0002] Image interpolation is the most basic and important technology in image processing. It is widely used in image display, image transmission, image analysis, image coding and other fields. The so-called image interpolation is a regeneration process of image data. It is generally divided into two steps: first Choose a continuous model to fit the original image, and then resample the continuous model with the desired sampling rate. [0003] Most of the traditional image interpolation methods are based on continuous function approximation theory, such as nearest neighbor interpolation, bilinear interpolation, bicubic interpolation and spline interpolation. The smoothing of the continuous interpolation function produces a transition band of gray values ​​that causes blu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T5/003G06T2207/20192
Inventor 罗笑南颜吉超林淑金
Owner SUN YAT SEN UNIV
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