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A Method for Measuring the Transfer Function of Digital Cameras Used in Biomedical Computer Vision Systems

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Abstract

The experimental results of testing the transfer function of Canon EOS 500D, AxioCam HS, and ToupCam 14MP cameras using the method proposed in this paper are presented. A diode-pumped solid-state laser (with a wavelength of 477 nm), an He–Ne laser (632.8 nm), and a tungsten–halogen lamp were used as light sources. The radiation power was varied by a spectral nine-stage attenuator (no. 7880171) and colored glasses (GOST 9411-91). It is shown that specialized cameras provide a shooting mode with a linear transfer function, while the transfer function for commercial cameras is linearized by its gamma correction.

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Funding

The work was supported by the Russian Foundation for Basic Research (project no. 19-08-00874a).

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Correspondence to E. S. Smirnov.

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The authors declare that they have no conflict of interests.

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Translated by A. Seferov

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Palchikova, I.G., Smirnov, E.S., Solenov, E.I. et al. A Method for Measuring the Transfer Function of Digital Cameras Used in Biomedical Computer Vision Systems. Instrum Exp Tech 65, 267–272 (2022). https://doi.org/10.1134/S0020441222020026

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  • DOI: https://doi.org/10.1134/S0020441222020026

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