How do sensors detect the exact wavelengths of the light it receives? In other words, how do they transform a physical light signal into a digital distribution of intensity over different wavelengths? My prediction is that there is some sort of device that can somehow measure the energy in each photon, which then allows you to calculate its wavelength using Planck's law. Or perhaps the device measures the signal directly, and can then use Fourier transform to separate it into many sub-signals, which can then be used to detect the intensity at each wavelength?
This canon website has a good explanation of it for a fair few digital imaging technologies (even CCD!). Effectively, you're using filters (3 per pixel, so 3 subpixels) and then recording the intensity of the light on each of these subpixels via the charge dispensed by the photons that make it through the filters. (At least this is how CCDS work).
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Also, the representation of a color is influenced by the colors surrounding it, which could cause color context or contrast.
How do sensors detect the exact wavelengths of the light it receives? In other words, how do they transform a physical light signal into a digital distribution of intensity over different wavelengths? My prediction is that there is some sort of device that can somehow measure the energy in each photon, which then allows you to calculate its wavelength using Planck's law. Or perhaps the device measures the signal directly, and can then use Fourier transform to separate it into many sub-signals, which can then be used to detect the intensity at each wavelength?
https://www.canon-europe.com/pro/infobank/image-sensors-explained/
This canon website has a good explanation of it for a fair few digital imaging technologies (even CCD!). Effectively, you're using filters (3 per pixel, so 3 subpixels) and then recording the intensity of the light on each of these subpixels via the charge dispensed by the photons that make it through the filters. (At least this is how CCDS work).
Also, the representation of a color is influenced by the colors surrounding it, which could cause color context or contrast.