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Distortion correction method and device and display equipment using distortion correction method and device

A distortion correction and pre-distortion technology, applied in the field of devices and display devices using the same, and distortion correction methods, can solve problems such as difficulty in meeting correction accuracy and application requirements, complex distortion and deformation of optical systems, etc., to improve imaging performance, increase The effect of product quality and high calibration accuracy

Pending Publication Date: 2019-07-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Although the existing electronic image correction methods can reduce the cost and weight, with the application and development of free-form surface off-axis optical systems, the distortion of the optical system is becoming more and more complicated, and the traditional distortion correction methods have been difficult to meet the correction requirements. Accuracy and Application Requirements

Method used

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  • Distortion correction method and device and display equipment using distortion correction method and device
  • Distortion correction method and device and display equipment using distortion correction method and device
  • Distortion correction method and device and display equipment using distortion correction method and device

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Embodiment Construction

[0033] The present invention will be described in detail below through specific embodiments and accompanying drawings.

[0034] A distortion correction method such as figure 1 As shown, through image pre-distortion, high-precision real-time correction of the optical system can be realized.

[0035] Specific steps include:

[0036] Step 101, obtain the distortion rate matrix, and further obtain the pre-distortion mapping relation table, the pre-distortion mapping relation table is the mapping relation table between the pixel coordinates of the original image and the pixel coordinates of the pre-distorted image; the specific steps are as follows figure 2 Shown:

[0037] Step 1011: Read the distortion rate of the grid point to obtain the distortion rate matrix;

[0038] Sampling the image display size, obtaining grid point coordinates, reading the grid point distortion rate corresponding to the grid point coordinates, forming a grid point distortion rate matrix corresponding to...

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Abstract

The invention provides a distortion correction method, which comprises the following steps of: obtaining a distortion rate matrix, and further obtaining a pre-distortion mapping relation table; and performing pre-distortion on the image to be displayed to obtain a pre-distorted image, and transmitting the obtained pre-distorted image to human eyes through a micro-display and an optical system. Theinvention further provides a distortion correction device and display equipment using the distortion correction device, and by adopting the distortion correction method and device and the display equipment using the distortion correction device, high-precision distortion correction can be achieved, meanwhile, the weight of the equipment is not affected, and the performance of the equipment is improved.

Description

technical field [0001] The invention relates to the field of optical distortion, in particular to a distortion correction method and device suitable for optical near-eye displays and a display device using the same. Background technique [0002] Since the concept of virtual reality (virtual reality, VR) and augmented reality (augmented reality, AR) was put forward, head-mounted display (HMD) based on VR or AR mode has made great progress. However, the virtual image displayed by the HMD is usually projected and magnified by a delicate optical system, which is easily affected by distortion at a large field of view. Severe optical distortion makes the user feel uncomfortable during the wearing process and the experience is poor. [0003] Most of the causes of distortion are caused by unsatisfactory optical design, production and adjustment process, and its types are mainly divided into two types: radial distortion and tangential distortion. VR optical systems are usually axisy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N13/332H04N13/327H04N13/106
CPCH04N13/332H04N13/327H04N13/106
Inventor 王涌天程德文刘悦
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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