Sensors 2008, 8(3), 1719-1739; doi:10.3390/s8031719
Article

Applications of the Integrated High-Performance CMOS Image Sensor to Range Finders — from Optical Triangulation to the Automotive Field

1 Department of Biomedical Engineering, Ming Chuan University, No. 5, Deming Rd., Gweishan Township, Taoyuan 333, Taiwan 2 Department of Optics and Photonics, National Central University, No. 300, Jung-Da Rd., Chung-Li City, Taoyuan 320, Taiwan 3 Department of Bio-Industrial Mechatronics Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
* Author to whom correspondence should be addressed.
Received: 22 December 2007; Accepted: 10 March 2008 / Published: 13 March 2008
(This article belongs to the Special Issue Integrated High-performance Imagers)
PDF Full-text Download PDF Full-Text [448 KB, uploaded 16 September 2008 11:01 CEST]
Abstract: With their significant features, the applications of complementary metal-oxidesemiconductor (CMOS) image sensors covers a very extensive range, from industrialautomation to traffic applications such as aiming systems, blind guidance, active/passiverange finders, etc. In this paper CMOS image sensor-based active and passive rangefinders are presented. The measurement scheme of the proposed active/passive rangefinders is based on a simple triangulation method. The designed range finders chieflyconsist of a CMOS image sensor and some light sources such as lasers or LEDs. Theimplementation cost of our range finders is quite low. Image processing software to adjustthe exposure time (ET) of the CMOS image sensor to enhance the performance oftriangulation-based range finders was also developed. An extensive series of experimentswere conducted to evaluate the performance of the designed range finders. From theexperimental results, the distance measurement resolutions achieved by the active rangefinder and the passive range finder can be better than 0.6% and 0.25% within themeasurement ranges of 1 to 8 m and 5 to 45 m, respectively. Feasibility tests onapplications of the developed CMOS image sensor-based range finders to the automotivefield were also conducted. The experimental results demonstrated that our range finders arewell-suited for distance measurements in this field.
Keywords: complementary metal-oxide semiconductor (CMOS); distance measurement; image sensor; range finder; triangulation method.

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

MDPI and ACS Style

Wu, J.-H.; Pen, C.-C.; Jiang, J.-A. Applications of the Integrated High-Performance CMOS Image Sensor to Range Finders — from Optical Triangulation to the Automotive Field. Sensors 2008, 8, 1719-1739.

AMA Style

Wu J-H, Pen C-C, Jiang J-A. Applications of the Integrated High-Performance CMOS Image Sensor to Range Finders — from Optical Triangulation to the Automotive Field. Sensors. 2008; 8(3):1719-1739.

Chicago/Turabian Style

Wu, Jih-Huah; Pen, Cheng-Chung; Jiang, Joe-Air. 2008. "Applications of the Integrated High-Performance CMOS Image Sensor to Range Finders — from Optical Triangulation to the Automotive Field." Sensors 8, no. 3: 1719-1739.

Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert