Device for short wavelength visible reflectance endoscopy using broadband illumination
First Claim
1. A system for producing images of tissue with a medical device that delivers an illumination light to a body cavity and a color image sensor that produces images of the tissue from a number of pixels that are sensitive to different wavelengths of light, comprising:
- an image processor coupled to receive signals produced by the color image sensor in response to illumination light reflected from the tissue having red, green, and blue color components, wherein, the image processor calculates image signals that are stored in a memory by minimizing the contribution from signals produced by the image sensor in response to red illumination light.
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Abstract
A system for performing short wavelength imaging with a broadband illumination source includes an image processor that receives signals from a color image sensor. The image processor reduces the contribution of red illumination light to an image by computing blue, green, and blue-green (cyan) color components of display pixels from the signals received from the image sensor. The blue, green, and cyan color component values are coupled to inputs of a color monitor for display to produce a false color image of the tissue.
66 Citations
17 Claims
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1. A system for producing images of tissue with a medical device that delivers an illumination light to a body cavity and a color image sensor that produces images of the tissue from a number of pixels that are sensitive to different wavelengths of light, comprising:
an image processor coupled to receive signals produced by the color image sensor in response to illumination light reflected from the tissue having red, green, and blue color components, wherein, the image processor calculates image signals that are stored in a memory by minimizing the contribution from signals produced by the image sensor in response to red illumination light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An imaging system for generating white light images and short wavelength visible images of tissue in response to a broad band illumination light that is delivered to a tissue sample and providing those images to one or more color video monitors, comprising:
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an image sensor that receives reflected light from the tissue sample, the image sensor having a number of pixels sensitive to different wavelengths of light and which generate image signals in response to the light received from the tissue sample; and
an image processor that receives a set of image signals from the image sensor and produces a white light image of the tissue sample from the set of image signals and a short wavelength image of the tissue sample from a subset of the image signals, wherein the short wavelength image of the tissue is produced by substantially eliminating a contribution of red light in the set of image signals. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification