Alternating adjustment calibration method applied to head-up equipment

A calibration method and adjustment technology, applied in image data processing, instruments, calculations, etc., can solve problems such as non-linear distortion correction, and achieve easy-to-implement and high-precision effects

Pending Publication Date: 2022-01-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Improves the problem that it cannot be corrected for nonlinear distortion; it has the characteristics of high precision and easy implementation

Method used

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  • Alternating adjustment calibration method applied to head-up equipment
  • Alternating adjustment calibration method applied to head-up equipment
  • Alternating adjustment calibration method applied to head-up equipment

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Embodiment Construction

[0093] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, the same blocks are denoted by the same reference numerals. With the same reference numerals, their names and functions are also the same. Therefore, its detailed description will not be repeated.

[0094] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0095] figure 1 The flowchart of the alternate adjustment calibration method applied to the head-up equipment provided according to the embodiment of the present invention is shown.

[0096] Such as figure 1 As shown, the alternate adjust...

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Abstract

The invention provides an alternate adjustment calibration method applied to head-up equipment, and the method comprises the following steps: S1, collecting the position of a calibration plate through a camera, and obtaining the internal parameters of the camera; S2, calculating external parameters of the camera; S3, calculating a distortion coefficient; S4, establishing the distortion coefficient into a transverse model and a longitudinal model; and S5, performing operation through an alternate adjustment optimization iterative algorithm, and optimizing internal parameters and external parameters with minimum errors. Modeling is carried out by carrying out nonlinear optimization on radial and tangential distortion models of a camera lens. The parameters of the visual system is further corrected by adopting an alternating adjustment algorithm. The problem that non-linear distortion cannot be corrected is solved. The method has the characteristics of high precision and easy realization.

Description

technical field [0001] The invention relates to the technical field of head-up display, in particular to an alternate adjustment calibration method applied to head-up equipment. Background technique [0002] Head-up display technology (referred to as HUD) is divided into three types: C-HUD, W-HUD and AR-HUD. Among them, C-HUD is imaged through a piece of transparent resin glass placed above the instrument, and the resin glass is generally processed according to the imaging conditions. Special treatment, usually made into a wedge to avoid reflection ghosting of the glass. W-HUD transmits light on the front windshield through the principle of optical projection, forming a virtual image in front of the driver's line of sight, which can display the information in the car, and the driver's line of sight can be seen without leaving the road. It eliminates the potential safety hazards caused by moving other interactive interfaces while driving. AR-HUD uses augmented reality techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/80G06T5/00
CPCG06T7/80G06T5/006G06T2207/30244
Inventor 孔令胜刘虹良吕宝林郭俊达张恩齐
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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