Prof. Guohua Cao Profile

Prof. Guohua Cao

at Changchun Univ of Science and Technology

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 5 July 2024 Paper

21-bit absolute photoelectric encoder

Liming Geng, Guohua Cao, Chunmin Shang, Hongchang Ding

Proceedings Volume 13183, 1318323 (2024) https://doi.org/10.1117/12.3033880

KEYWORDS: Matrices, Sensors, Signal detection, Miniaturization, Design, Phototransistors, Reliability, CCD image sensors, Logic, Binary data

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Proceedings Article | 2 November 2022 Paper

Encoder sinusoidal error compensation based on optimized PSO algorithm

Han Hou, Guo-hua Cao, Hongchang Ding, Kun Li

Proceedings Volume 12351, 123511J (2022) https://doi.org/10.1117/12.2654573

KEYWORDS: Particles, Particle swarm optimization, Error analysis, Optimization (mathematics), Sensors, Signal processing, Prisms

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SPIE Journal Paper | 16 June 2022

Detection and compensation of installation eccentricity of photoelectric encoder based on double highpass filter

Han Hou, Guohua Cao, Hongchang Ding, Kun Li, Changfu Zhao

OE, Vol. 61, Issue 06, 064107, (June 2022) https://doi.org/10.1117/12.10.1117/1.OE.61.6.064107

KEYWORDS: Error analysis, Computer programming, Signal processing, Bandpass filters, Signal detection, Optical engineering, Head, Optical filters, Field programmable gate arrays, Finite impulse response filters

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SPIE Journal Paper | 30 December 2020

Research on high-precision error measurement system of angular displacements based on reciprocal roll angles

Kun Li, Hongchang Ding, Guohua Cao, Han Hou, Changfu Zhao

OE, Vol. 59, Issue 12, 124110, (December 2020) https://doi.org/10.1117/12.10.1117/1.OE.59.12.124110

KEYWORDS: Error analysis, Computer programming, Spindles, Calibration, Autocollimators, Optical engineering, Inspection, Mirrors, Reflectors, Data processing

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Proceedings Article | 24 October 2017 Paper

Study on the high-frequency laser measurement of slot surface difference

Jia Bing, Qiongying Lv, Guohua Cao

Proceedings Volume 10458, 104581K (2017) https://doi.org/10.1117/12.2285565

KEYWORDS: Laser scanners, Laser systems engineering, Laser processing, Laser applications, Laser range finders, 3D scanning, Distance measurement

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Proceedings Article | 29 January 2007 Paper

Detection of small moving targets in staring images sequence with complex background and low contrast

Guo-hua Cao, You-shan Qu, Yan-fei Wang, Xue-wu Fan, Cheng-zhi Su

Proceedings Volume 6279, 62795B (2007) https://doi.org/10.1117/12.725378

KEYWORDS: Target detection, Detection and tracking algorithms, Image processing, Image segmentation, Optical flow, Image filtering, Signal to noise ratio, Statistical analysis, Convolution, Imaging systems

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Proceedings Article | 9 December 2005 Paper

The analysis of optical-electro collimated light tube measurement system

Zhenhui Li, Tao Jiang, Guohua Cao, Yanfei Wang

Proceedings Volume 6024, 60240Z (2005) https://doi.org/10.1117/12.666841

KEYWORDS: Collimation, Visualization, Digital Light Processing, Signal generators, CCD cameras, Optical testing, Charge-coupled devices, Diffraction, Reticles, Image processing

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Proceedings Article | 10 February 2005 Paper

Study on measurement method of necking process

Lizhong Zhang, Zhenglin Yu, Tao Jiang, Guohua Cao, Yanfei Wang

Proceedings Volume 5638, (2005) https://doi.org/10.1117/12.576809

KEYWORDS: Charge-coupled devices, Prisms, Signal processing, Semiconductor lasers, Precision measurement, Video, Computing systems, Optical scanning systems, Optical scanning, Optical testing

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Proceedings Article | 17 January 2005 Paper

The photoelectrical measurement technique research for optical system transmittivity

Zhenhui Li, Qishun Dong, Guohua Cao

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.575057

KEYWORDS: Modulation, Modulators, Optical amplifiers, Interference (communication), Visible radiation, Fiber couplers, Error analysis, Lamps, Optical filters, Light

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Proceedings Article | 17 January 2005 Paper

Effect of laser intensity changing on accuracy of size measurement by laser scanning

Tao Jiang, Zhenglin Yu, Guohua Cao, Hongji Xu

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.577452

KEYWORDS: Laser scanners, Receivers, Signal processing, Laser stabilization, Amplifiers, Laser applications, Collimation, Time metrology, Modulation, Digital electronics

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Proceedings Article | 17 January 2005 Paper

Study of electronic clinometer based on PSD

Zhenglin Yu, Tao Jiang, Guohua Cao

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.569797

KEYWORDS: Infrared radiation, Calibration, Data acquisition, Sensors, Semiconductor lasers, LCDs, Analog electronics, Electrodes, Computing systems, Light sources

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Proceedings Article | 17 January 2005 Paper

Study on measuring of verticality of the elevator’s guide way

Lizhong Zhang, Kaiyan Lin, Guohua Cao, Zhenglin Yu, Yanfei Wang

Proceedings Volume 5644, (2005) https://doi.org/10.1117/12.576847

KEYWORDS: Hough transforms, Image processing, CCD cameras, Cameras, Solids, Image segmentation, Image acquisition, Edge detection, Turbulence, Interference (communication)

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Proceedings Article | 13 January 2005 Paper

Effect of energy distribution of laser facula on shafting aligning detection of large assembling set

Guohua Cao, Chengzhi Su, Hongji Xu

Proceedings Volume 5629, (2005) https://doi.org/10.1117/12.568428

KEYWORDS: Semiconductor lasers, Collimation, Laser energy, Helium neon lasers, Distance measurement, Electrodes, Laser applications, Error analysis, Zone plates, Precision measurement

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Proceedings Article | 5 October 2000 Paper

Method of measuring the necking in material tensile test

Yan Sun, Guohua Cao, Li Li

Proceedings Volume 4223, (2000) https://doi.org/10.1117/12.401801

KEYWORDS: Charge-coupled devices, Prisms, Optical design, Collimation, Mechanics, Optical testing, Laser scanners, Data acquisition, Imaging systems, Semiconductor lasers

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Proceedings Article | 10 August 1998 Paper

Optical measurement method of necking process in the material tensile test

Lizhong Zhang, Xueping Song, Guohua Cao, Zhenglin Yu

Proceedings Volume 3558, (1998) https://doi.org/10.1117/12.318451

KEYWORDS: Charge-coupled devices, Optical testing, Materials processing, Semiconductor lasers, Prisms, Measurement devices, Reflectors, Mirrors, Stray light, Light sources

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Proceedings Article | 10 August 1998 Paper

Photoelectric detection of the position of electric transmission contact net in electrification railway

Guohua Cao, Lizhong Zhang, Tao Jiang, Xueping Song

Proceedings Volume 3558, (1998) https://doi.org/10.1117/12.318443

KEYWORDS: Image filtering, Image processing, Calibration, CCD cameras, Imaging systems, Linear filtering, Charge-coupled devices, Optical filters, Signal to noise ratio, Error analysis

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Showing 5 of 16 publications

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