Signal processing device for biological observation apparatus
First Claim
1. A signal processing device for a biological observation apparatus comprising a signal processing control unit for photoelectrically converting light reflected from a living body that is a test subject based on illumination light from an illumination unit that irradiates light to the living body, controlling an operation of an image pickup unit creating an image pickup signal, and outputting the image pickup signal to a display device, the signal processing device comprising:
- a spectral signal creating section for creating a first spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 400 nm to 440 nm, and a second spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 520 nm to 560 nm by performing computation processing using a predetermined coefficient for spectral signal creation corresponding to an image in a narrow band of an optical wavelength based on the image pickup signal; and
a color adjusting section for adjusting a color tone for each of a plurality of wavelength bands forming the spectral signal when outputting the spectral signal to the display device, the color adjusting section configured to output the first spectral signal corresponding to when illumination or image pickup is performed in the wavelength band centered on the range from 400 nm to 440 nm to B and G channels of the display device, and to output the second spectral signal corresponding to the when illumination or image pickup is performed in the wavelength band centered on the range from 520 nm to 560 nm to an R channel of the display device.
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Accused Products
Abstract
Tissue information of a desired deep portion of a biological tissue based on a spectral image obtained from signal processing is adjusted to image information in a color tone suitable for observation. Outputs of a matrix computing section 436 are respectively connected to integrating sections 438a to 438c, and after integrating computation is performed for them, color conversion computation is performed for respective spectral image signals ΣF1 to ΣF3 in a color adjusting section 440, spectral color channel image signals Rch, Gch and Bch are created from the spectral image signals ΣF1 to ΣF3, and images of the spectral color channel images Rch, Gch and Bch are sent to a display monitor 106 via a switching section 439.
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Citations
31 Claims
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1. A signal processing device for a biological observation apparatus comprising a signal processing control unit for photoelectrically converting light reflected from a living body that is a test subject based on illumination light from an illumination unit that irradiates light to the living body, controlling an operation of an image pickup unit creating an image pickup signal, and outputting the image pickup signal to a display device, the signal processing device comprising:
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a spectral signal creating section for creating a first spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 400 nm to 440 nm, and a second spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 520 nm to 560 nm by performing computation processing using a predetermined coefficient for spectral signal creation corresponding to an image in a narrow band of an optical wavelength based on the image pickup signal; and a color adjusting section for adjusting a color tone for each of a plurality of wavelength bands forming the spectral signal when outputting the spectral signal to the display device, the color adjusting section configured to output the first spectral signal corresponding to when illumination or image pickup is performed in the wavelength band centered on the range from 400 nm to 440 nm to B and G channels of the display device, and to output the second spectral signal corresponding to the when illumination or image pickup is performed in the wavelength band centered on the range from 520 nm to 560 nm to an R channel of the display device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A biological observation apparatus photoelectrically converting light reflected from a living body based on illumination light irradiated to the living body that is a test subject, controlling an operation of an image pickup unit creating an image pickup signal in a wide band, and outputting the image pickup signal to a display device, the biological observation apparatus comprising:
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a spectral signal creating section for creating a first spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 400 nm to 440 nm and a second spectral signal corresponding to when illumination or image pickup is performed in a wavelength band centered on a range from 520 nm to 560 nm by performing computation processing using a predetermined coefficient for spectral signal creation corresponding to an image in a narrow band of an optical wavelength based on the image pickup signal; a color adjusting section for adjusting a color tone for each of a plurality of wavelength bands for forming the spectral signal when outputting the spectral signal to the display device, the color adjusting section configured to output the first spectral signal corresponding to when illumination or image pickup is performed in the wavelength band centered on 400 nm to 440 nm to B and G channels of the display device and to output the second spectral signal corresponding to when illumination or image pickup is performed in the wavelength band centered on 520 nm to 560 nm to an R channel of the display device; and a plurality of light sources for emitting a plurality of illumination lights differing in spectral characteristic from each other as the illumination light. - View Dependent Claims (27, 28, 29, 30, 31)
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Specification