Data processing apparatus, data processing method, data processing program, optical element, imaging optical system, and imaging apparatus to select suitable wavelength for object detection

The data processing apparatus comprising:

• a processor configured to execute
• data acquisition processing of acquiring spectral data of a plurality of subjects,
• calculation processing of calculating intensity characteristics at a first wavelength and a second wavelength selected from wavelength ranges of the acquired spectral data of the plurality of subjects based on a relationship between two wavelengths which are the first wavelength and the second wavelength,
• data conversion processing of converting the intensity characteristics calculated in the calculation processing into discrimination data of a specific subject for the wavelength range, output processing of outputting the discrimination data to an outside,
• wherein the discrimination data is a first map representing a change in the intensity characteristic with a wavelength as a variable, and
• the first map is a two-dimensional map, and coordinate axes of the two-dimensional map are the first wavelength and the second wavelength,
• receive a specific position on the first map displayed on the display device in response to a user indication,
• specify a wavelength combination of the first wavelength and the second wavelength to be used for detection of a detection object among the plurality of subjects based on the specific position,
• acquire a first image in a wavelength range including the first wavelength in the specified wavelength combination and a second image in a wavelength range including the second wavelength,
• calculate a difference image between the first image and the second image, which are acquired, and
• create a second map showing the calculated difference image.

A data processing method to be executed by a processor, comprising:

• acquiring spectral data of a plurality of subjects;
• calculating intensity characteristics at a first wavelength and a second wavelength selected from wavelength ranges of the acquired spectral data of the plurality of subjects based on a relationship between two wavelengths which are the first wavelength and the second wavelength;
• converting the intensity characteristics calculated in the calculation step into discrimination data of a specific subject for the wavelength range;
• and
• outputting the discrimination data to an outside,
• wherein the intensity characteristic is an intensity difference, and is calculated according to the following expressions
• the intensity difference=|[A(λ1)−A(λ2)]−[B(λ1)−B(λ2)]|
• in a case in which spectral data of a first subject in the spectral data of the plurality of subjects is denoted by A(λ), spectral data of a second subject in the spectral data of the plurality of subjects is denoted by B(λ), and the first wavelength and the second wavelength, which are to be selected, are denoted by λ1 and λ2, respectively.

A data processing method to be executed by a processor, comprising:

• acquiring spectral data of a plurality of subjects;
• calculating intensity characteristics at a first wavelength and a second wavelength selected from wavelength ranges of the acquired spectral data of the plurality of subjects based on a relationship between two wavelengths which are the first wavelength and the second wavelength;
• converting the intensity characteristics calculated in the calculation step into discrimination data of a specific subject for the wavelength range;
• and
• outputting the discrimination data to an outside,
• wherein the discrimination data is a first map representing a change in the intensity characteristic with a wavelength as a variable, the first map is a two-dimensional map, and coordinate axes of the two-dimensional map are the first wavelength and the second wavelength,
• receiving a specific position on the first map displayed on the display device in response to a user indication,
• specifying a wavelength combination of the first wavelength and the second wavelength to be used for detection of a detection object among the plurality of subjects based on the specific position,
• acquiring a first image in a wavelength range including the first wavelength in the specified wavelength combination and a second image in a wavelength range including the second wavelength,
• calculating a difference image between the first image and the second image, which are acquired, and
• creating a second map showing the calculated difference image.

A data processing apparatus comprising:

• a processor configured to execute
• data acquisition processing of acquiring spectral data of a plurality of subjects,
• calculation processing of calculating intensity characteristics at a first wavelength and a second wavelength selected from wavelength ranges of the acquired spectral data of the plurality of subjects based on a relationship between two wavelengths which are the first wavelength and the second wavelength,
• data conversion processing of converting the intensity characteristics calculated in the calculation processing into discrimination data of a specific subject for the wavelength range, and
• output processing of outputting the discrimination data to an outside,
• wherein the intensity characteristic is an intensity difference or an intensity ratio, and is calculated by the following expressions
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• in a case in which spectral data of a first subject in the spectral data of the plurality of subjects is denoted by A(λ), spectral data of a second subject in the spectral data of the plurality of subjects is denoted by B(λ), and the first wavelength and the second wavelength, which are to be selected, are denoted by λ1 and λ2, respectively.