Two-dimensional (2D) displacement measurement of moving objects using a new MEMS binocular vision system

Di, Si; Lin, Hui; Du, Ruxu

doi:10.1080/09500340.2011.566636

Cited by 5 publications

(5 citation statements)

References 13 publications

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“…A sequence that consists only of 0s and 1s and has a length of 8 can serve as the Census for that center point. [7]The Hamming distance, on the other hand, can calculate the similarity measure between reference pixels and matched pixels in the image data altered by the Census. In summary, since it is necessary to compare the similarity between two points in the images for the left and right views required for disparity calculation, a bitwise XOR operation is performed between the two points of the two images, and the number of results that are 1 is counted.…”

Section: R T Dis B X X mentioning

confidence: 99%

Research on binocular camera ranging system based on FPGA

Fan,

xu,

wang

et al. 2024

Third International Conference on Electronic Information Engineering and Data Processing (EIEDP 2024)

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With the advancement of technology, stereoscopic distance measurement techniques, especially binocular vision technology, have gained significant attention for their high efficiency, low cost, and strong anti-interference capabilities. A binocular distance measurement system based on FPGA boasts excellent scalability, low power consumption, and high performance. This study has designed a binocular vision distance measurement system based on FPGA, which simulates the human visual center by transforming the image color space and conducting edge detection. The system utilizes the Census algorithm to detect object positions and successfully calculates the distance with an error within 1cm. This design is characterized by low hardware cost, practicality, and has a wide potential for application.

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Section: R T Dis B X X mentioning

confidence: 99%

Research on binocular camera ranging system based on FPGA

Fan,

xu,

wang

et al. 2024

Third International Conference on Electronic Information Engineering and Data Processing (EIEDP 2024)

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“…With multiple groups, the measure range can be extended, which will be discussed later. For simplicity, let us first consider the case of the object moving in a plane observed by two micro-lenses [8]. As shown in Fig.…”

Section: Displacement Calculationmentioning

confidence: 99%

“…In principle, it is capable of extracting 3D information of an object and/or its position [7]. Following our previous work [8], in this paper, a multiple-focus ACE imaging system is introduced to measure the displacements of moving objects in 2½D space. Comparing to the conventional multiple-cameras Stereo Vision System (SVS), our system uses a micro-lens array with multiple-focus and a single CMOS array.…”

Section: Introductionmentioning

confidence: 99%

A Displacement Measurement System Based on Artificial Compound-Eye Imaging for 2½D Space

Zhan

Tang

Jin

et al. 2013

AMM

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Comparing to the single aperture imaging system, Artificial Compound-Eye (ACE) imaging system has some nice features, such as small size and stereo vision. Based on the pictures captured by ACE, the displacement of an object can be easily deduced. This paper introduces our multiple-focus ACE imaging system. The system mainly consists of (a) a micro-lens array fabricated by Micro-Electro-Mechanical-System (MEMS) technology, (b) a CMOS chip, (c) a 3D mechanical moving stage, and (d) a software module. It can measure the displacements of an object in 212D space without calibration. The experiment validation is included.

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“…The non-contact measurement systems rely on technologies, such as lasers, radar and GPS, as well as the processing and analysis of images obtained by video technology (Lee, Shinozuka 2006;Chang, Ji 2007;Morlier et al 2007;Yun et al 2011;Lord, Mccormick 2012) or digital photography (Bell et al 2012;Jáuregui et al 2003;Jiang et al 2008). Photogrammetry, which has been widely used for static and dynamic displacement measurement, is a measurement technique that uses photographs to establish the geometrical relationship between an object and its photographic images (Di et al 2011). Close range photogrammetry technology has been utilized in civil engineering applications such as bridge measurement (Jáuregui et al 2003;Jiang et al 2008;Fukuda et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on joint stiffness with vision-based system and geometric imperfections of temporary member structure

Liu

et al. 2018

Journal of Civil Engineering and Management

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In this paper, tests of plug-pin joints are conducted in order to obtain their mechanical parameters, including semi-rigid property. To solve the difficulties of multi-point displacement measurements for small joints, this investigation proposes a vision-based measurement system based on the principle of binocular stereo vision to improve measurement accuracy. Accurate sub-pixel location is achieved according to a template-matching algorithm based on grayscale. Joint performance, including horizontal bar joint tension and compression, semi-rigidity between horizontal bars and upright rods and bracing tension and compression, is investigated in order to acquire joint failure modes as well as load and displacement (or moment and rotation angle) curves. Through data fitting, multi-linear simplified models are proposed to illustrate the joints’ mechanical performance. This paper also investigates geometric imperfection of temporary member structure with plug-pin joints based on several substructure models and temporary grandstand units using a total station theodolite. The probabilistic models of initial member out-of-straightness and story frame out-of-plumb have been acquired, which can be used into Monte Carlo simulation to create stochastic model of the temporary member structure.

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Two-dimensional (2D) displacement measurement of moving objects using a new MEMS binocular vision system

Cited by 5 publications

References 13 publications

Research on binocular camera ranging system based on FPGA

Research on binocular camera ranging system based on FPGA

A Displacement Measurement System Based on Artificial Compound-Eye Imaging for 2½D Space

Experimental study on joint stiffness with vision-based system and geometric imperfections of temporary member structure

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