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IJPAP Vol.47(10) [October 2009] >


Title: Estimation of spectral response of a consumer grade digital still camera and its application for temperature measurement
Authors: Panditrao, Anagha M
Rege, Priti P
Keywords: Digital still camera
Spectral response
Non-contact temperature measurement
Issue Date: Oct-2009
Publisher: CSIR
Abstract: Consumer grade digital still camera has been used for image acquisition of various heat sources and the spectral response of camera has been obtained. Different sources are used to cover the bandwidth ranging from IR to UV. From the results, it has been observed that the response of the digital camera used to capture source images is adequate to cover visible range (400-700 nm). The images of various visible known heat sources are captured using the mentioned camera. From the captured images, various zones of the source are identified using image-processing algorithms. The actual temperature is measured by placing a miniature k type thermocouple in each zone. The measured temperature values are correlated with the respective colours and features computed from the images. The colour temperature correlation is established by applying various analytical techniques. Calibration of the image-based measurement with contact measurement using an established sensor is performed.
Page(s): 703-707
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.47(10) [October 2009]

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