The influence of a camera's spectral transfer function used for observing high voltage corona on insulators

Coetzer, Casper; Leuschner, F.W.

doi:10.1109/tdei.2016.005021

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Therefore, it is clear that sensitivity alone is not enough to characterize SBUV cameras at the level needed for using them as reliable measuring tools that could enable determination of corona power loss on basis of images recorded by SBUV cameras. A long series of scientific papers devoted to determination of this relationship show that a set of parameters that could describe precisely performance of SBUV cameras is badly needed [18][19][20][21][22].…”

Section: Analysis Of Blackbody Irradiance Methods For Sensitivity Mea...mentioning

confidence: 99%

Analysis of a blackbody irradiance method of measurement of solar blind UV cameras' sensitivity

Chrzanowski¹,

Chrzanowski²

2019

Opto-Electronics Review

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This paper presents a critical analysis of a current typical method to measure sensitivity of solar blind ultraviolet cameras using a high temperature blackbody as a calibrated source of ultraviolet light. It has been shown that measurement of sensitivity of solar-blind ultraviolet (SBUV) cameras defined as minimal detectable blackbody irradiance at optics plane of the tested SBUV camera generates inflated, misleading and prone to measurement errors' results that should not be used for evaluation of SBUV cameras' performance.

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Section: Analysis Of Blackbody Irradiance Methods For Sensitivity Mea...mentioning

confidence: 99%

Analysis of a blackbody irradiance method of measurement of solar blind UV cameras' sensitivity

Chrzanowski¹,

Chrzanowski²

2019

Opto-Electronics Review

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“…Our investigations implied that the problem with counting *Corresponding author at: casper.coetzer.uv@gmail.com was that the different camera focus positions make it difficult to attain repeatable similar measurements. • Pixels summation and subtraction: frames of an active signal and non-signal (blank) frames are subtracted from each other and averaged [4,11]. Personal experience with this method implied that many frames are required to obtain consistent repeatable results.…”

Section: Introductionmentioning

confidence: 99%

Opto-Electronics Review

Coetzer,

West

2021

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Solar-blind ultraviolet cameras with image intensifier with CMOS detector typically use various count methodologies to measure the optical energy of an electrical corona. However, these count methodologies are non-radiometric without considering parameters such as distance, focus-, zoom-, and gain setting of a camera. An algorithm which considers the calibration and radiometric measurement of optical energy for the slow frame rate intensifier type cameras is presented. Furthermore, it is shown how these calibration data together with the flowcharts are used for the conversion from raw measured data to radiometric energy values.

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Corona Discharge Detection with Modified Consumer Cameras

Kuhnke,

Werle

2023

2023 4th International Conference on High Voltage Engineering and Power Systems (ICHVEPS)

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The influence of a camera's spectral transfer function used for observing high voltage corona on insulators

Cited by 5 publications

References 12 publications

Analysis of a blackbody irradiance method of measurement of solar blind UV cameras' sensitivity

Analysis of a blackbody irradiance method of measurement of solar blind UV cameras' sensitivity

Opto-Electronics Review

Corona Discharge Detection with Modified Consumer Cameras

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