Apparatus, system, and method of estimating spectrum of object
AssigneeRicoh Company, Ltd.
InventorsKensuke MASUDA, Go Maruyama, Yuji Yamanaka
Life of this patent
Estimating the term…
Abstract
An apparatus or system of estimating a spectrum of an object includes a plurality of filters or a plurality of filter areas that respectively have spectral characteristics different from one another, wherein at least two filters or filter areas have transmittance greater than a predetermined value throughout a wavelength range subject for estimation. The image capturing apparatus or system estimates a line spectrum of an object using spectral images of the at least two filters or filter areas having transmittance greater than the predetermined value.
Claims17
An image capturing apparatus, comprising:
- an optical system configured to focus lights from an object to generate optical information;
- filtering means including a plurality of filters or a plurality of filter areas that respectively have spectral characteristics different from one another, wherein at least two filters or filter areas of the filtering means are configured to have transmittance greater than a predetermined value throughout a wavelength range subject for estimation;
- a sensor configured to form a plurality of types of spectral image based on the optical information;
- and
- a processor configured to estimate a line spectrum of the object using spectral images of the at least two filters or filter areas having transmittance greater than the predetermined value.
An image capturing system, comprising:
- an image capturing apparatus including:
- an optical system configured to focus lights from an object to generate optical information;
- filtering means including a plurality of filters or a plurality of filter areas that respectively have spectral characteristics different from one another, wherein at least two filters or filter areas of the filtering means are configured to have transmittance greater than a predetermined value throughout a wavelength range subject for estimation;
- and
- a sensor configured to form a plurality of types of spectral image based on the optical information;
- and
- an information processing apparatus including a processor, the processor being configured to estimate a line spectrum of the object using spectral images of the at least two filters or filter areas having transmittance greater than the predetermined value.
A method of estimating a spectrum of an object, comprising:
- obtaining a plurality of types of spectral image, the plurality of types of spectral image being generated by passing lights through filtering means having m items of filters or filter areas that respectively have spectral characteristics different from one another, wherein at least n items of filters or filter areas of the filtering means are configured to have transmittance greater than a predetermine value throughout a wavelength range subject for estimation;
- determining whether there is no output of spectral image for (m-n) items of spectral images;
- switching to a line spectrum mode when the determining determines that there is no output of spectral image for (m-n) items of spectral images;
- and
- estimating a line spectrum of the object using spectral images of the at least n items of filters or filter areas having transmittance greater than the predetermined value.
Dependencies are inferred from the claim text.