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Image correction method and device

An image correction and image technology, which is applied in the field of image processing, can solve problems such as complex distortion and inability to correct images, and achieve the effect of efficient and accurate distortion correction

Active Publication Date: 2021-07-02
HANGZHOU SANTAN MEDICAL TECH
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  • Claims
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Problems solved by technology

[0003]However, the C-arm machine generates images based on X-ray image intensification devices, and the distortions in the images are more complex
Based on the above-mentioned correction methods for radial distortion and tangential distortion, images with complex distortion cannot be corrected well

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Embodiment Construction

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art based on this application belong to the scope of protection of this application.

[0067] Image distortion of images collected by imaging devices (such as optical cameras) mainly includes radial distortion and tangential distortion. For ease of understanding, combine Figure 1-a to Figure 1-d As an example, image distortion is described. Figure 1-a It is the first schematic diagram of radial distortion. Figure 1-b It is the second schematic diagram of radial distortion. Figure 1-c It is the first schematic diagram of tangential distortion. Figure 1-d It is the se...

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Abstract

The embodiment of the invention provides an image correction method and device. According to the scheme, the method comprises the following steps: sampling pixel points in a calibration image collected by a C-arm machine to obtain a plurality of sampling points; determining distortion displacement of the plurality of sampling points; determining an initial displacement matrix based on the distortion displacement of the multiple sampling points, wherein the value of an element corresponding to each sampling point in the initial displacement matrix is the distortion displacement of the sampling point; on the basis of matrix decomposition, predicting values of elements except for elements corresponding to the sampling points in the initial displacement matrix to obtain a distortion displacement matrix; and correcting a to-be-corrected image acquired by the C-arm machine by using the distortion displacement matrix to obtain a corrected image. According to the technical scheme provided by the embodiment of the invention, the distortion displacement of each pixel point in the image acquired by the C-arm machine is acquired based on the distortion displacement matrix. By means of the distortion displacement matrix, distortion correction can be efficiently and accurately conducted on images collected by the C-arm machine with complex distortion.

Description

technical field [0001] The present application relates to the technical field of image processing, in particular to an image correction method and device. Background technique [0002] Image distortion means that the object in the image is distorted or deformed relative to the object itself. Image distortion is usually divided into radial distortion and tangential distortion. For images with radial and tangential distortions, there are corresponding correction methods. [0003] However, the C-arm machine generates images based on X-ray image intensification devices, and the distortions in the images are more complicated. Based on the above-mentioned correction methods for radial and tangential distortions, images with complex distortions cannot be corrected well. Contents of the invention [0004] The purpose of the embodiments of the present application is to provide an image correction method and device to efficiently and accurately correct images with complex distort...

Claims

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Application Information

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IPC IPC(8): G06T5/00G06T7/33
CPCG06T7/337G06T5/80
Inventor 何滨孟险峰徐鸿嘉顾静军陈汉清
Owner HANGZHOU SANTAN MEDICAL TECH
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