Wavelength of light
アポロ精工 アポロ精工 新横浜オフィス（旧ケーアイテクノロジー/旧市川ソフトラボラトリー）
I would like to write about the technology of "light," which is next to image processing. Although it is outside my area of expertise, I feel that there has been an increase in requests for image processing development related to the wavelength of light, so I would like to introduce it. The "color" changes with the difference in the wavelength of light. The most well-known colors are the "R, G, B" colors, but this time I am not talking about visible light colors. This is about utilizing the differences in transmission and reflection rates due to wavelength. Specifically, this involves infrared and ultraviolet light. As the names suggest, these are types of light that go beyond the range of "visible light" that humans can see. Infrared is on the outside of red, and ultraviolet is on the opposite side of violet. Since the transmission rate changes with different wavelengths, objects that appear to have the same brightness in visible light can show differences when using an infrared light source and a camera with high infrared sensitivity (and a visible light cut filter if necessary). These differences may not be visible to the human eye. These wavelengths have low S/N ratios, so we might ask for "noise reduction" or to combine or subtract infrared images and visible light images (though it's not that simple) for the purpose of detecting objects. Combining, subtracting, and detecting are the main tasks of an image processing company. *News is distributed through our company's newsletter.
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