IMAGE PROCESSING DEVICE, IMAGING DEVICE, COMPUTER-READABLE RECORDING MEDIUM, AND IMAGE PROCESSING METHOD
First Claim
Patent Images
1. An image processing device comprising:
- a normal-light-image storage unit that stores therein each picture signal of a normal light image of an observed region, the normal light image being captured by a normal-light imaging unit that receives normal light from the observed region via a plurality of color filters having different spectral characteristics;
a fluorescence-image storage unit that stores therein each picture signal of a fluorescence image of the observed region, the fluorescence image being captured by a fluorescence imaging unit that receives fluorescence generated from the observed region irradiated with excitation light;
a uniform-image generating unit that extracts each picture signal corresponding to a specific color filter, which is one of the plurality of color filters and transmits light in a wavelength band for which a light absorption property of a contrast region in the observed region is low, from among each picture signal of the normal light image stored in the normal-light-image storage unit, and generates a uniform image of a wavelength-band component corresponding to the specific color filter based on each extracted picture signal; and
a correction processing unit that corrects each picture signal of the fluorescence image stored in the fluorescence-image storage unit by using the uniform image.
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Abstract
An image processing device captures a normal light image of an observed region via a plurality of color filters having different spectral characteristics, respectively, generates a uniform image having low contrast by extracting each picture signal corresponding to a picture signal in a wavelength band for which light absorption characteristic of a contrast region in the observed region becomes low, and corrects each picture signal of a fluorescence image of the observed region by using the uniform image.
40 Citations
11 Claims
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1. An image processing device comprising:
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a normal-light-image storage unit that stores therein each picture signal of a normal light image of an observed region, the normal light image being captured by a normal-light imaging unit that receives normal light from the observed region via a plurality of color filters having different spectral characteristics; a fluorescence-image storage unit that stores therein each picture signal of a fluorescence image of the observed region, the fluorescence image being captured by a fluorescence imaging unit that receives fluorescence generated from the observed region irradiated with excitation light; a uniform-image generating unit that extracts each picture signal corresponding to a specific color filter, which is one of the plurality of color filters and transmits light in a wavelength band for which a light absorption property of a contrast region in the observed region is low, from among each picture signal of the normal light image stored in the normal-light-image storage unit, and generates a uniform image of a wavelength-band component corresponding to the specific color filter based on each extracted picture signal; and a correction processing unit that corrects each picture signal of the fluorescence image stored in the fluorescence-image storage unit by using the uniform image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An imaging device comprising:
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a light source unit that switchably applies normal light and excitation light to an observed region; a normal-light imaging unit that includes a plurality of color filters having different spectral characteristics and captures a normal light image of the observed region by receiving, via the plurality of color filters, normal light from the observed region irradiated with the normal light; a fluorescence imaging unit that captures a fluorescence image of the observed region by receiving fluorescence generated from the observed region irradiated with the excitation light; a uniform-image generating unit that extracts each picture signal corresponding to a specific color filter, which is one of the plurality of color filters and transmits light in a wavelength band for which a light absorption property of a contrast region in the observed region is low, from among each picture signal of the normal light image captured by the normal-light imaging unit, and generates a uniform image of a wavelength-band component corresponding to the specific color filter based on each extracted picture signal; and a correction processing unit that corrects each picture signal of the fluorescence image captured by the fluorescence imaging unit by using the uniform image.
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10. A computer readable medium including programmed instructions for performing an image processing, wherein the instructions, when executed by a computer, cause the computer to perform:
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acquiring each picture signal of a normal light image of an observed region, the normal light image being captured by a normal-light imaging unit that receives normal light from the observed region via a plurality of color filters having different spectral characteristics, and each picture signal of a fluorescence image of the observed region, the fluorescence image being captured by a fluoresce imaging unit that receives fluorescence generated from the observed region irradiated with excitation light; extracting each picture signal corresponding to a specific color filter, which is one of the plurality of color filters and transmits light in a wavelength band for which a light absorption property of a contrast region in the observed region is low; generating a uniform image of a wavelength-band component corresponding to the specific color filter based on each picture signal extracted at the extracting; and correcting each picture signal of the fluorescence image by using the uniform image.
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11. An image processing method comprising:
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acquiring each picture signal of a normal light image of an observed region, the normal light image being captured by a normal-light imaging unit that receives normal light from the observed region via a plurality of color filters having different spectral characteristics, and each picture signal of a fluorescence image of the observed region, the fluorescence image being captured by a fluoresce imaging unit that receives fluorescence generated from the observed region irradiated with excitation light; extracting each picture signal corresponding to a specific color filter, which is one of the plurality of color filters and transmits light in a wavelength band for which a light absorption property of a contrast region in the observed region is low; generating a uniform image of a wavelength-band component corresponding to the specific color filter based on each picture signal extracted at the extracting; and correcting each picture signal of the fluorescence image by using the uniform image.
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Specification