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Method and device for correcting distortion of image and television set

A distortion correction and image technology, applied in the display field, can solve the problems of long calculation time and low efficiency, and achieve the effect of improving correction efficiency and shortening correction time

Inactive Publication Date: 2018-07-20
上海顺久电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present application provide an image distortion correction method, device, and television set to solve the problems of long calculation time and low efficiency in the prior art when performing distortion correction on distorted images

Method used

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  • Method and device for correcting distortion of image and television set
  • Method and device for correcting distortion of image and television set
  • Method and device for correcting distortion of image and television set

Examples

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example 1

[0045] Example 1: with Figure 1b Take the pincushion distortion image in , as an example, because the pattern of the pincushion distortion image will be distorted inward, so, as Figure 4a , 4b As shown, when performing distortion correction on a pincushion-distorted image, the pattern in the central area of ​​the image will be appropriately enlarged, thereby reducing the definition of the pattern in the central area of ​​the image.

example 2

[0046] Example 2: with Figure 1a Take the barrel distorted image as an example, because the image of the barrel distorted image will be distorted outward, so when the distortion correction is performed on the barrel distorted image, the peripheral pattern of the image will be appropriately enlarged, resulting in the The sharpness of peripheral patterns decreases.

[0047] In view of the above situation, in the embodiments of the present invention, when performing distortion correction on the distorted image, the size of the distorted image can be appropriately reduced, so as to improve the definition of the reference image.

[0048] As an example, take Figure 4a Take the pincushion distortion image in as an example, Figure 4c for Figure 4a Another benchmark image of , where, Figure 4c The reference image shown includes two parts: one part is the image after distortion correction of the pincushion distortion image (such as Figure 4c b1 in ), and the outer border (such...

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Abstract

The embodiment of the invention, which relates to the technical field of displaying, provides a method and device for correcting distortion of an image and a television set so that problems of long calculation time and low efficiency of distortion correction of a distorted image in the prior art can be solved. The method comprises: a mapping coordinate of a target pixel point in a distorted imageis calculated according to the coordinate of a target pixel point in a reference image, a coordinate of a peak of a partition in which the target pixel point is located in the reference image, and a distortion value of the peak in the distorted image, wherein the distorted image is an image formed by distortion of the reference image; if no pixel point exists at the mapping coordinate, a pixel point near the mapping coordinate is selected as a first pixel point and a color value of the target pixel point is calculated based on the coordinate and color value of the first pixel point and the mapping coordinate; and if any pixel point exists at the mapping coordinate, the color value of the pixel point is used as a color value of the target pixel point.

Description

technical field [0001] The present application relates to the field of display technology, in particular to an image distortion correction method, device and television. Background technique [0002] When a wide-angle lens is used to capture images, the captured image is prone to distortion in areas beyond a certain angle range. Since this distortion is caused by the characteristics of the wide-angle camera itself, the wide-angle lens will be distorted after the image is captured. , the distorted image needs to be geometrically transformed according to the distortion correction algorithm. [0003] The distortion correction process of the distorted image in the prior art includes: first, estimate the distortion mathematical model of the wide-angle lens in advance, and then, based on the distortion mathematical model and the distortion correction algorithm, calculate the coordinates of each pixel in the reference image in the distorted image and The corresponding color value ...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T3/00G06T3/40
CPCG06T3/4007G06T3/047G06T5/80
Inventor 田广
Owner 上海顺久电子科技有限公司