Radiometric calibration of charge-coupled-device video cameras

Campos, J.

doi:10.1088/0026-1394/37/5/25

Cited by 12 publications

(13 citation statements)

References 23 publications

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“…In this section we detail the entire process we propose to calibrate radiometrically a monochrome CCD camera, [16][17][18][19][20]22 which mainly involves two steps: studying and correcting the influence of different kinds of noise, and studying the spectral response of the CCD sensor. In the following subsections we show how we developed the necessary steps to accomplish the complete calibration of our camera, and the instrumentation used in each case.…”

Section: Correction Of the Ccd Camera's Responsementioning

confidence: 99%

“…Several publications describe the types of noise and their influence on CCD camera response. 5,8,13,[16][17][18][19][20][21][22][23][24]29 Detailing the effect of noise on electronic devices is outside the scope of this paper, but it is important to consider the nature of the major noise sources in order to understand how to minimize them.…”

Section: Correction Of the Ccd Camera's Responsementioning

confidence: 99%

“…Several authors [1][2][3][4][5][6]8,[16][17][18][19][20][21][22] have put forward the idea of modeling the pixel response of CCD cameras linearly, i.e.,…”

Section: Reciprocity Lawmentioning

confidence: 99%

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Calibrating the Elements of a Multispectral Imaging System

López-Álvarez¹,

Hernández‐Andrés²,

Romero³

et al. 2009

jist

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We describe a method to calibrate the elements of a multispectral imaging system aimed at skylight imaging, which consists of a monochrome charge-coupled device (CCD) camera and a liquid crystal tunable filter. We demonstrate how to calibrate these two devices in order to build a multispectral camera that can obtain spectroradiometric measurements of skylight. Spectral characterizations of the tunable filter and the camera are presented together with a complete study of correcting temporal and spatial noise, which is of key importance in CCDs. We describe all the necessary steps to undertake this work and all the additional instrumentation that must be used to calibrate the radiometric devices correctly. We show how this complete study of our multispectral system allows us to use it as an accurate, high resolution spectroradiometer.

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Section: Correction Of the Ccd Camera's Responsementioning

confidence: 99%

Section: Correction Of the Ccd Camera's Responsementioning

confidence: 99%

See 1 more Smart Citation

Calibrating the Elements of a Multispectral Imaging System

López-Álvarez¹,

Hernández‐Andrés²,

Romero³

et al. 2009

jist

View full text Add to dashboard Cite

show abstract

“…Igual aadira un poco ms de explicacin.....*** that allows to change their location with respect to the sphere's exit port. This setup fulfills all the necessary requirements to provide low-uncertainty measurements [12].The source consists of an integrating sphere externally illuminated by a 0.02% powerstabilized dye laser, which, in its turn, is pumped by an Ar laser. This system covers the whole range of wavelengths between 380 nm and 930 nm, except for the 470-520 nm range, for which a different dye that needs to be pumped by a Kr laser is required.…”

Section: Experimental Setup and Calibration Proceduresmentioning

confidence: 99%

Low-uncertainty absolute radiometric calibration of a CCD

2006

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The use of CCD detectors for radiometric measurements has proven to be very interesting for a variety of fields. This work presents an experimental method for the low-uncertainty calibration of the spectral radiant exposure responsivity of a CCD detector. It contains the description of the experimental setup as well as the analysis of the various sources of uncertainty. The overall result shows that the calibration procedure-related uncertainty is only 0.18% as long as the temperature is kept constant and the field of view is restricted to angles under 13.

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“…For each pixel in the image, the radiometric response is measured by an independent sensor element [22]. …”

Section: Mathematical Model Of the Imaging Systemmentioning

confidence: 99%

Grey Level and Noise Evaluation of a Foveon X3 Image Sensor: A Statistical and Experimental Approach

Riutort-Mayol

Marqués-Mateu

Seguí

et al. 2012

Sensors

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Radiometric values on digital imagery are affected by several sources of uncertainty. A practical, comprehensive and flexible procedure to analyze the radiometric values and the uncertainty effects due to the camera sensor system is described in this paper. The procedure is performed on the grey level output signal using image raw units with digital numbers ranging from 0 to 212-1. The procedure is entirely based on statistical and experimental techniques. Design of Experiments (DoE) for Linear Models (LM) are derived to analyze the radiometric values and estimate the uncertainty. The presented linear model integrates all the individual sensor noise sources in one global component and characterizes the radiometric values and the uncertainty effects according to the influential factors such as the scene reflectance, wavelength range and time. The experiments are carried out under laboratory conditions to minimize the rest of uncertainty sources that might affect the radiometric values. It is confirmed the flexibility of the procedure to model and characterize the radiometric values, as well as to determine the behaviour of two phenomena when dealing with image sensors: the noise of a single image and the stability (trend and noise) of a sequence of images.

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Radiometric calibration of charge-coupled-device video cameras

Cited by 12 publications

References 23 publications

Calibrating the Elements of a Multispectral Imaging System

Calibrating the Elements of a Multispectral Imaging System

Low-uncertainty absolute radiometric calibration of a CCD

Grey Level and Noise Evaluation of a Foveon X3 Image Sensor: A Statistical and Experimental Approach

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