Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source

A high-speed line scan camera and image acquisition device technology, applied in image communication, components of color TVs, components of TV systems, etc., can solve the problems of high imaging quality and difficult to find, and achieve clarity and consistency. Line, wide applicability effect

Inactive Publication Date: 2022-04-12
苏州博格泰新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the current high-speed image acquisition system, it is difficult to find a high-speed linear array camera synchronous acquisition control method and device that is easy to use on site, has high imaging quality, and can be flexibly adjusted

Method used

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  • Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source
  • Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source
  • Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source

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Embodiment 1

[0042] S1. Use the high-speed line-scan camera 4 to collect images, aiming at scanning high-speed image collection of high-speed moving objects. In order to ensure the instantaneous image acquisition of the high-speed moving target, it is necessary to select a high-speed line-scan camera 4 above 10KHz, that is, the instantaneous camera exposure imaging within 0.1ms, and image acquisition. Due to the selection of a high-speed linear array photosensitive chip with a large target surface, it is necessary to cooperate with a large-aperture lens 5 for optical imaging.

[0043] S2. Since the high-speed line-scan camera 4 needs to collect images within 0.1 ms or even less, the instantaneous light flux is very small, so a high-intensity line-type light source is designed to supplement the light synchronously to ensure the clarity and histogram of the images collected by the line-scan camera 4 Uniformity of distribution.

[0044] S3. The high-speed line-scan camera 4 generally needs a...

Embodiment 2

[0047] S1. The high-intensity linear light source generator 6 is used for synchronous supplementary light on the high-speed moving target, and is used to collect clear and high-quality images with the high-speed line scan camera 4 . The present invention has designed a high-intensity light source generator 6 and a linear light source emitting module 7, wherein the high-intensity light source generator 6 is used to generate a 0-50W strong light source (even higher), and the present invention uses a laser light source as an example to ensure that Provide sufficient light within an instant of 0.1ms or even less. Due to different scene light and different acquisition speeds, the required instantaneous light fluxes are different, so the present invention designs a light source power adjustment module 15 for flexibly adjusting the power of the light source, which is convenient for on-site use. This also solves the problem that the current laser generator has a fixed power and cannot...

Embodiment 3

[0051] S1. The main function of adaptive pulse signal synchronous generation module 8 is to control the synchronous triggering of high-speed line-scan cameras and line-type light sources to ensure high-quality image acquisition in an instant of 0.1ms or less. In particular, the two pulse signals generated by this module ensure that the triggering time of the line scan camera 4 is shorter than the instantaneous emission time of the light source, so as to ensure that the camera has a sufficient intensity of the light source to supplement the light at the moment of imaging. In order to realize this function, the adaptive pulse signal synchronous generation module 8 has two trigger modes:

[0052] (1) Synchronous trigger control of external trigger sensor. This design is suitable for the case of variable speed acquisition, such as belt transmission equipment. When the equipment is driven by a motor, the wheel shaft encoder is installed on the shaft head of the electrical appliance...

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Abstract

The invention discloses an image acquisition method and device for synchronous trigger control of a high-speed linear array camera and a high-intensity light source, and belongs to the technical field of machine vision, the image acquisition device comprises a shell, and is characterized in that a lens barrel is arranged at one end of the shell, and a mainboard is arranged in the shell; the mainboard is sequentially connected with a linear array camera, a lens, a high-intensity light source generator, a linear light source transmitting module, a self-adaptive pulse signal synchronous generation module, a power supply conversion module and six groups of interfaces. The exterior of the shell is connected with an external trigger sensor, a pulse adjustable generator, a light source power adjusting module and a linear parameter adjusting module through wires. According to the invention, the function of instantaneously synchronizing shutter exposure and light source and camera imaging in high-speed linear array camera acquisition can be realized, and the definition of acquired images and the balance and consistency of histogram distribution can be ensured in high-frame-rate image acquisition.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and in particular relates to an image acquisition method and a device thereof for synchronous trigger control of a high-speed line array camera and a high-intensity light source. Background technique [0002] Machine vision technology is widely used in the field of industrial inspection. The current medium and low-speed image acquisition system can basically achieve high-definition and high-quality image acquisition by using area array cameras and line array cameras. With the mass application of high-speed processing and high-speed assembly lines, as well as the needs of target detection and defect detection, high-speed image acquisition especially requires the acquisition of high-quality, high-definition, uniform illumination and imaging images. [0003] However, in the current high-speed image acquisition system, it is difficult to find a high-speed linear array camera synchronous acquis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N5/235H04N5/232
CPCH04N23/56H04N23/51H04N23/55H04N23/67H04N23/64H04N23/74
Inventor 王耀东赵永岗王鹏程冯苏芳周尧
Owner 苏州博格泰新能源科技有限公司
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