A Fast Pupillometer Using High Resolution Linear CCD Arrays and a 16-bit Microprocessor

This paper presents a high-resolution real-time 3D coordinate measurement system based on multi-angle intersection and cylindrical imaging. The measuring angle is detected by the linear camera equipped with cylindrical lenses, whose field of view is a 3D space rather than 2D plane. This camera has prominent advantages in precise coordinate measurement and dynamic position tracking due to the high resolution and outstanding frame rate of linear CCD. Each camera is a 1D angle measuring unit which confirms an angle thereby a plane passing through the light spot. With three cameras arrangement in front of the measurement field, the 3D coordinate of the light spot can be reconstructed by multi-angle intersection. An accurate and generic calibration method is introduced to calibrate this camera. The proposed calibration method is based on nonparametric ideas to find the mapping from incoming scene rays to photo-sensitive elements, and this method (black box calibration) is still effective even if the lens distortion is high and asymmetric. It is applicable to a central (single viewpoint) camera equipped with any lenses. The proposed calibration method is applied to the 3D coordinate measurement system. The coordinate measurement accuracy of the designed system is better than 0.49mm.

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A system for measuring jaw movements in 6 degrees of freedom using high-resolution linear CCD camera

Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society ◽

10.1109/iembs.1992.5761370 ◽

1992 ◽

Cited By ~ 4

Author(s):

Toyohiko Hayashi ◽

Masahiko Kurokawa ◽

Michio Miyakawa ◽

Akira Saitoh ◽

Kiyoshi Ishioka ◽

...

Keyword(s):

High Resolution ◽

Degrees Of Freedom ◽

Ccd Camera ◽

Jaw Movements ◽

Linear Ccd ◽

6 Degrees Of Freedom

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Development of a high resolution micro-spectrophotometer for biochemical analyzer based on virtual instrument and linear CCD

2009 9th International Conference on Electronic Measurement & Instruments ◽

10.1109/icemi.2009.5274625 ◽

2009 ◽

Cited By ~ 2

Author(s):

Zhong Ren ◽

Guodong Liu ◽

Lvming Zeng ◽

Zhen Huang ◽

Wenping Zeng

Keyword(s):

High Resolution ◽

Virtual Instrument ◽

Linear Ccd ◽

Biochemical Analyzer

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Design of High-Resolution FPD System Based on Doglegged Sampling

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.666.93 ◽

2014 ◽

Vol 666 ◽

pp. 93-97

Author(s):

Bao Long Zhang ◽

Jing Yun Wang

Keyword(s):

High Resolution ◽

Spatial Resolution ◽

Sampling Method ◽

Spatial Arrangement ◽

Image Correction ◽

Imaging Device ◽

Slant Angle ◽

Charge Coupled Device ◽

System A ◽

Linear Ccd

For the shortcomings of methods used to improve the image spatial resolution of current linear charge coupled device (CCD) FPD System, a new sampling method is proposed, and a high-resolution FPD System is designed. Two same linear CCD cameras arc fixed with specific spatial arrangement, namely both camera 1 and camera 2's CCD scan the object with a tilt angle B, and image correction and pixel interpolation arc also used for getting high-resolution image. The experimental results show that, compared with the regular scanning mode equipped with a signal camera and =0¡ã, in our method cameras with slant angle =60¡ãenables the image spatial resolution doubled, and keeps the field of view unchanging. It is easy to realize the designed system in engineering, very economical and convenient to maintain it, and only using the existing imaging device to obtain higher-resolution images.

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