Comparison of CMOS and CCD cameras for laser profiling

Norbert Koller D.D.S.; Paul O'Leary; Peter Lee

doi:10.1117/12.529868

3 May 2004 Comparison of CMOS and CCD cameras for laser profiling

Norbert Koller D.D.S., Paul O'Leary, Peter Lee

Proceedings Volume 5303, Machine Vision Applications in Industrial Inspection XII; (2004) https://doi.org/10.1117/12.529868
Event: Electronic Imaging 2004, 2004, San Jose, California, United States

Abstract

The recent introduction of high dynamic range CMOS-cameras with logarithmic response to light intensity, justify a serious evaluation of the technology as an alternative technology for laser profiling. This paper presents a series of comparative tests of a high quality CCD-camera and a high-dynamic range CMOS-camera. Standard gray scale charts are used to verify the intensity response and the signal to noise ratio at different f-stops. It is shown that the high dynamic range of the CMOS-sensor makes the camera suitable for differential image laser profiling. Furthermore, the cross-section of steel rods and wires are observed to verify the industrial applicability of the different standards. Both, material at room temperature and red-hot glowing steel bars were measured. The advantages and disadvantages for each technology are shown on the basis of these tests. Finally, a laser profiler was manufactured with the CMOS-camera and successfully implemented in a steel-mill.

Citation Download Citation

Norbert Koller D.D.S., Paul O'Leary, and Peter Lee "Comparison of CMOS and CCD cameras for laser profiling", Proc. SPIE 5303, Machine Vision Applications in Industrial Inspection XII, (3 May 2004); https://doi.org/10.1117/12.529868

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KEYWORDS

CCD cameras

Cameras

Profiling

High dynamic range imaging

Laser applications

Interference filters

Light sources

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