CAMERA SPECTRAL SENSITIVITY CHARACTERIZATION USING A BLACKBODY SOURCE

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dc.contributor.advisorSunderland, Peter B.en_US
dc.contributor.authorBedarkar, Rucha Sanjayen_US
dc.contributor.departmentMechanical Engineeringen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2011-10-08T06:20:31Z
dc.date.available2011-10-08T06:20:31Z
dc.date.issued2011en_US
dc.description.abstractWith digital cameras emerging as more effective tools for scientific research, there is increasing need for accurate and inexpensive ways to calibrate them. In particular, to date there has been no simple method to measure camera sensitivity as a function of wavelength. For example, narrow bandwidth monochromator beams are expensive and have calibration problems, while color chart method is unreliable owing to illumination dependence. This thesis presents a novel technique for spectral sensitivity calibration of a camera (or any black-and-white cameras or color sensors) using blackbody furnace operating at 650 - 1250 °C. Images recorded at 11 different temperatures are observed for red, green, and blue camera outputs. Using Planck ’ s Law to calculate the incident light intensities, the three color sensitivities as functions of wavelength are computed using MATLAB function that optimizes the spectral sensitivities until the blackbody measurements are closely matched. The results are in reasonable agreement with published sensitivities.en_US
dc.identifier.urihttp://hdl.handle.net/1903/12026
dc.subject.pqcontrolledEngineeringen_US
dc.subject.pqcontrolledOpticsen_US
dc.subject.pqcontrolledMechanical engineeringen_US
dc.subject.pquncontrolledcamera modelen_US
dc.subject.pquncontrolledColor charten_US
dc.subject.pquncontrolledimage processingen_US
dc.subject.pquncontrolledmonochromatoren_US
dc.subject.pquncontrolledPlanck's lawen_US
dc.subject.pquncontrolledspectral responseen_US
dc.titleCAMERA SPECTRAL SENSITIVITY CHARACTERIZATION USING A BLACKBODY SOURCEen_US
dc.typeThesisen_US

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