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Single-camera range measurement system and range measurement method thereof

A single-camera, distance-measuring system technology, applied in distance measurement, measurement devices, line-of-sight measurement, etc., can solve the problems of excessive power consumption, difficulty in function expansion, and difficulty in ensuring that the zoom parameters of the two cameras are consistent, achieving cost savings, The effect of overcoming the difficulty of parameter calibration

Inactive Publication Date: 2012-02-15
BEIJING UNION UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the dual-camera ranging system has the following disadvantages: the cost of the dual-camera is high, the consistency of the parameters of the two cameras (such as the focal length) must be strictly screened, and the composition of the dual-camera ranging system is complex (the controller needs to complete the two camera image data), difficulty in function expansion (such as automatic zoom distance measurement, it is not easy to ensure that the zoom parameters of the two cameras are consistent), and the two cameras consume more power, etc.

Method used

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  • Single-camera range measurement system and range measurement method thereof
  • Single-camera range measurement system and range measurement method thereof
  • Single-camera range measurement system and range measurement method thereof

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Embodiment 1

[0044] Such as Figure 8 As shown, the controller 6 of the present invention is composed of an FPGA (programmable device) 8 and a memory 9, and the FPGA 8 and the memory 9 perform information interaction. The camera 1 is controlled by the FPGA8 to collect images, and the images are sent to the memory 9 for storage, and the FPGA8 outputs the control signal of the steering gear 5 to control the position translation of the steering gear 5 and the camera 1 by T x , the camera 1 performs image acquisition again, and the FPGA 8 controls the memory 9 to store the images, and processes the two images and calculates the data of the position distance of the target point, and then outputs the result data through the communication interface.

[0045] In this embodiment, FPGA 8 uses XC3S500E-4PQG208C of xilinx Spartant 3E 500 series, memory 9 uses IS61WV51216, camera uses C3188a (image size is 664*492), and communication interface 7 uses MAX3232 for level conversion.

Embodiment 2

[0047] The controller 6 of the present invention is made of a single-chip microcomputer. The single-chip microcomputer adopts Freescale MC9S12XS128 or other types of single-chip microcomputers, the camera 1 adopts c3188a, and the level conversion of the communication interface 7 adopts MAX3232.

[0048] The camera 1 is controlled by the single-chip microcomputer to collect images, and the images are stored in the memory 9 of the single-chip microcomputer, and the single-chip microcomputer outputs the control signal of the steering gear 5 to control the position translation of the steering gear 5 and the camera 1 by T x , the camera 1 performs image acquisition again to obtain another image, the single-chip microcomputer controls the memory 9 to store the image, the single-chip microcomputer processes the two images and calculates the data of the target point position distance, and then outputs the result data through the communication interface.

[0049] In this embodiment, a ...

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Abstract

The invention relates to a single-camera range measurement system and a range measurement method thereof. The single-camera range measurement system comprises a camera. The camera can convert scene imaging information into image data and transmit the image data to a controller. The camera is installed on a camera base. The camera base cooperates with a linear track. A circular shaft is arranged on the camera base. An end of a stirring connecting rod is provided with a rectangular groove. The rectangular groove is sleeved on the circular shaft of the camera base. The other end of the stirring connecting rod is fixed on a rotating shaft of a steering engine. The steering engine can realize camera position translation. The controller can realize acquisition and storage of data information of images from the camera. The controller can control the steering engine to drive the stirring connecting rod to move in the linear track so that the camera is driven to move. The controller can carry out information interaction with a communication interface. The communication interface realizes level conversion. The controller is connected to an external communication circuit by the communication interface. Through the single camera which is removable, the single-camera range measurement system realizes a range measurement effect which can be achieved by combination of two general cameras in the past. The single-camera range measurement system can be widely utilized for a range measurement system.

Description

technical field [0001] The invention relates to a ranging system and a ranging method, in particular to a single-camera ranging system and a ranging method. Background technique [0002] Stereo vision sensors are widely used in many fields such as industrial inspection, object recognition, robot self-guidance and military, especially binocular vision sensors. At present, the commonly used binocular machine vision system basically uses two cameras with parallel viewing axes or fixed angles to complete image acquisition. This method has the advantages of simple structure, fast measurement speed, and high accuracy of measurement and matching. However, this system requires strict parameter calibration of the camera before measurement. [0003] Such as figure 1 , figure 2 As shown, the existing dual-camera ranging system pointed out in "Learning O penCV" edited by Gary Bradski and Adrian Kaehler: where two cameras are placed in parallel mathematically, its main parameters ar...

Claims

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Application Information

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IPC IPC(8): G01C3/00
Inventor 许立群陈婷婷周磊
Owner BEIJING UNION UNIVERSITY