Signal processing device, signal processing method, image capture device, and medical image capture device

Abstract

To enable tunable wavelength extraction and detection of a narrow band, while maintaining resolution. Provided is a signal processing device including: an acquisition unit that acquires a signal of a first wavelength band in which wavelength extraction is possible in a tunable manner by means of postprocessing and a signal of a second wavelength band to be used for a special purpose; and a signal processing unit that performs signal processing using the signal of the first wavelength band and the signal of the second wavelength band.

1 . An image capture device comprising:
 a first detection unit that detects a signal of a first wavelength band in which wavelength extraction is possible in a tunable manner by means of postprocessing; and   a second detection unit that detects a signal of a second wavelength band to be used for a special purpose.   
     
     
         2 . The image capture device according to  claim 1 ,
 wherein the first detection unit and the second detection unit constitute pixels of an image sensor.   
     
     
         3 . The image capture device according to  claim 2 ,
 wherein the first detection unit and the second detection unit include, on a pixel basis, filters having different spectral characteristics.   
     
     
         4 . The image capture device according to  claim 3 ,
 wherein transmittances of the filters provided in the first detection unit and the second detection unit are determined on a basis of output sensitivities of the first detection unit and the second detection unit, respectively.   
     
     
         5 . The image capture device according to  claim 3 ,
 wherein the number of pixels in the first detection unit and the number of pixels in the second detection unit are determined on a basis of output sensitivities of the first detection unit and the second detection unit, respectively.   
     
     
         6 . The image capture device according to  claim 3 , further comprising
 an exposure control unit that controls exposure on a basis of output sensitivity of each of the first detection unit and the second detection unit.   
     
     
         7 . The image capture device according to  claim 3 ,
 wherein the filter provided in the first detection unit is a plasmon resonance filter.   
     
     
         8 . The image capture device according to  claim 3 ,
 wherein the filter included in the second detection unit includes an RGB sensor and a dual bandpass filter.   
     
     
         9 . The image capture device according to  claim 1 ,
 wherein the first detection unit and the second detection unit are provided in different cameras or image capture mechanisms.   
     
     
         10 . The image capture device according to  claim 9 , further comprising
 a dichroic filter that separates light entering the first detection unit and the second detection unit.   
     
     
         11 . The image capture device according to  claim 1 ,
 wherein the first wavelength band is a wide band.   
     
     
         12 . The image capture device according to  claim 1 ,
 wherein the second wavelength band is a wide band or a narrow band.   
     
     
         13 . The image capture device according to  claim 1 , further comprising
 a display control unit that displays an image generated on a basis of the signal of the first wavelength band so as to be overlaid on an image generated on a basis of the signal of the second wavelength band.   
     
     
         14 . A medical image capture device comprising:
 a first detection unit that detects a signal of a first wavelength band in which wavelength extraction is possible in a tunable manner by means of postprocessing; and   a second detection unit that detects a signal of a second wavelength band to be used for a special purpose.   
     
     
         15 . The medical image capture device according to  claim 14 , further comprising
 a focusing unit that performs focusing using the signal of the second wavelength band.   
     
     
         16 . The medical image capture device according to  claim 14 ,
 wherein the first detection unit and the second detection unit constitute pixels of an image sensor.   
     
     
         17 . The medical image capture device according to  claim 16 ,
 wherein the first detection unit and the second detection unit include, on a pixel basis, filters having different spectral characteristics.   
     
     
         18 . The medical image capture device according to  claim 17 ,
 wherein transmittances of the filters provided in the first detection unit and the second detection unit are determined on a basis of output sensitivities of the first detection unit and the second detection unit, respectively.   
     
     
         19 . The medical image capture device according to  claim 17 ,
 wherein the number of pixels in the first detection unit and the number of pixels in the second detection unit are determined on a basis of output sensitivities of the first detection unit and the second detection unit, respectively.   
     
     
         20 . The medical image capture device according to  claim 17 , further comprising
 an exposure control unit that controls exposure on a basis of output sensitivity of each of the first detection unit and the second detection unit.