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Three-dimensional information calculation device, three-dimensional measurement device, three-dimensional information calculation method, and three-dimensional information calculation program
Three-dimensional information calculation device, three-dimensional measurement device, three-dimensional information calculation method, and three-dimensional information calculation program
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摘要
PROBLEM TO BE SOLVED: To provide a three-dimensional information calculating device capable of accurately measuring a distance to a subject by excluding the influence of ambient light and compensating an image shift due to the movement of the subject or camera shake. A three-dimensional information calculation device (50) captures a subject (3) while projecting structured light (2) in a near-infrared wavelength region, a first near-infrared image at the same time and the same angle of view, and a first near-infrared image. An image input unit 20 for inputting a visible light image, a second near-infrared image at the same time when the subject is imaged when the structured light is not projected, and a second visible light image; Near-infrared image difference unit 51 that calculates a near-infrared difference image by subtracting the near-infrared image and the second near-infrared image, and visible by subtracting the first visible-light image and the second visible-light image A visible light image difference unit 52 that calculates a light difference image, an image extraction unit 53 that calculates an extracted image by subtracting the near infrared difference image and the visible light difference image, and a distance to a subject based on the extracted image. And a three-dimensional calculation unit 54 for calculating [Selection diagram] Fig. 3
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