Digital array high-speed image pick-up system aberration correcting method

A high-speed camera and digital technology, applied in high-speed photography, TV system components, photography, etc., can solve the problems of lack of optical path system parameters, complex design principles, hindering the expansion of development engineering applications, etc., and achieve accurate experimental results Effect

Inactive Publication Date: 2015-07-01
TSINGHUA UNIV
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Problems solved by technology

Although a lot of research has been done on the design and application of the array high-speed camera system, the design principle is complicated, the operation is inconvenient, and more importantly, there is a lack of research on the influence of the optical path system parameters on the aberration problem. The development of this technology in mechanical dynamic testing and its application in engineering

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  • Digital array high-speed image pick-up system aberration correcting method
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  • Digital array high-speed image pick-up system aberration correcting method

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Embodiment Construction

[0023] The specific structure, working principle and working process of the present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention should not be limited by this.

[0024] figure 1 It is a schematic diagram of the structure and principle of the digital array high-speed camera system provided by the present invention. The device includes a 3*3 array LED light source unit 100, a first imaging lens 301, a second imaging lens 302, a timing synchronization delay control unit 400, and a 3*3 An array CCD camera unit 500, a switch 600, and a computer 700; the light emitted by the 3*3 array LED point light source unit 100 is refracted by the first imaging lens 301 to become parallel light, passes through the specimen 200, and then passes through the second imaging lens 302 Convergence, and finally the image is received by the 3*3 array CCD camera unit 500, and the collected image is transmitted t...

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Abstract

The invention discloses a digital array high-speed image pick-up system aberration correcting method and belongs to the technical field of experimental solid mechanics dynamic testing and high-speed photographic images. According to the digital array high-speed image pick-up system aberration correcting method, an LED (Light Emitting Diode) serves as a light source; a CCD (Charge Coupled Device) camera serves as an image recording device; the digital array high-speed image pick-up system comprises a 3*3 array LED light source unit, a 3*3 array CCD camera unit, a high-accuracy time sequence synchronous delay control unit, an optical imaging unit, an impact loading unit and the like; influence rules of geometrical parameters of the digital array high-speed pick-up system to the aberration is analyzed; flash ranging mechanics dynamic testing analysis is performed after correction of the aberration of images collected by CCD cameras at different positions; the aberration correction method aims at the inherent aberration problem of the digital array high-speed pick-up system and a test result is more accurate.

Description

technical field [0001] The invention belongs to the field of experimental solid mechanics dynamic test technology and high-speed photographic image technology. Background technique [0002] The combination of high-speed camera technology and photomechanics is an important means to study the dynamic mechanical properties and dynamic fracture behavior of materials and structures. It has played an important role in the experimental dynamic fracture mechanics and the measurement of dynamic mechanical properties of materials. Although a lot of research has been done on the design and application of the array high-speed camera system, the design principle is complicated, the operation is inconvenient, and more importantly, there is a lack of research on the influence of the optical path system parameters on the aberration problem. The development of this technology in mechanical dynamic testing and its expansion in engineering applications are discussed. It is urgent to propose a...

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Application Information

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IPC IPC(8): H04N5/232G03B39/00
Inventor 姚学锋刘伟马寅佶王申
Owner TSINGHUA UNIV
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