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Image distortion correction method and device

An image distortion correction and image technology, which is applied in the field of image processing, can solve the problem of low image clarity and achieve good photo experience and high timeliness

Active Publication Date: 2019-09-20
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a solution to the technical problem in the prior art that processing the dedistorted image directly based on the interpolation algorithm leads to low definition of the image after distortion correction
[0005] For this reason, the first purpose of the present invention is to propose a method for image distortion correction to solve the technical problem in the prior art that processing the dedistorted image directly based on the interpolation algorithm leads to low definition of the image after distortion correction

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0027] The method and device for correcting image distortion according to the embodiments of the present invention will be described below with reference to the accompanying drawings. Wherein, the application body of the image distortion correction method in the embodiment of the present invention is a smart terminal with a camera module including a wide-angle camera, and the smart terminal may be a mobile phone, a notebook computer, a smart wearable device, and the like.

[0028] Aiming at the technical problem in the prior art ...

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Abstract

The invention provides an image distortion correction method and device, wherein the method comprises the steps of obtaining a first coordinate of each pixel point in a to-be-corrected distorted image; obtaining a second coordinate corresponding to the first coordinate, the second coordinate being a distortionless coordinate corresponding to the first coordinate; determining the image complexity of the distorted image, and determining a correction degree parameter according to the image complexity; obtaining a smoothing coefficient according to the smoothing function; and according to the smoothing processing coefficient and the second coordinate, performing smoothing correction on the first coordinate to obtain a distortion correction image. Therefore, the pixel coordinate correction is carried out on the distorted image, the definition of the distorted image is improved, the distortion correction of different degrees is carried out on different areas of the image in an adaptive mode according to the complexity of the image, and the loss of the definition of the image is reduced as much as possible while the high timeliness of the algorithm is guaranteed.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image distortion correction method and device. Background technique [0002] At present, with the advancement of smart terminal manufacturing technology, a camera module is installed on the smart terminal for users to take pictures, and it is common to install a wide-angle camera on the smart terminal. Among them, the wide-angle lens camera has a larger field of view (Field of Vision, FOV) than the traditional lens camera, but the distortion of the wide-angle lens is large, and the edge of the image will be severely distorted. [0003] In the related art, in order to compensate the distortion of the image captured by the wide-angle camera, it is necessary to perform distortion correction processing on the image. At present, on the smart terminal, only the influence of the gray value of several direct neighbor points around the sample point to be tested is con...

Claims

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Application Information

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IPC IPC(8): G06T5/00
CPCG06T5/80
Inventor 康健
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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