JP2010039912A5

JP2010039912A5 -

Info

Publication number: JP2010039912A5
Application number: JP2008204230A
Authority: JP
Filing date: 2008-08-07
Publication date: 2011-08-18
Anticipated expiration: 2028-08-07

Claims

A light source unit that irradiates a part of a living body with structured near-infrared light and unstructured near-infrared light, and
A light source control unit that controls the light source unit to perform irradiation switching between the structured near-infrared light and the unstructured near-infrared light;
An imaging unit that captures an image of a part of the living body and generates imaging data based on the structured near-infrared light and imaging data based on the unstructured near-infrared light,
The structured near-infrared imaging data and the unstructured near-infrared imaging data are compared, and the structured near-infrared imaging data and the structured data are compared. An image comparison unit for determining a correspondence relationship of pixels with imaging data by near-infrared light,
Calculating a three-dimensional information of a structure existing inside the living body based on the correspondence relationship of the pixels, and a three-dimensional information calculation unit using the three-dimensional information as a subcutaneous pattern
A subcutaneous pattern acquisition device.

The subcutaneous pattern acquisition device further includes a pixel value correction unit that corrects pixel values of pixels that constitute imaging data by the structured near-infrared light,
The pixel value correction unit is applicable when the pixel value of the pixel constituting the structured near-infrared imaging data includes a pixel value within a predetermined range. The subcutaneous pattern acquisition apparatus according to claim 1, wherein the pixel value is rewritten to a maximum value.

The subcutaneous pattern acquisition apparatus further includes a structure pixel estimation unit that estimates pixels corresponding to structures existing inside the living body from the imaging data by the non-structured near infrared light,
The image comparison unit includes a pixel corresponding to the structure included in the unstructured imaging data of near infrared light, and a pixel value included in the structured imaging data of near infrared light. The subcutaneous pattern acquisition apparatus according to claim 2, wherein the correspondence relationship with the pixel rewritten to the maximum value is determined.

The structured near-infrared light is composed of an irradiation pattern in which strip-shaped bright portions irradiated with near-infrared light and strip-shaped dark portions not irradiated with near-infrared light are alternately arranged,
2. The subcutaneous light source according to claim 1, wherein the light source unit sequentially irradiates a plurality of the irradiation patterns having different areas corresponding to the bright part and the dark part, and different arrangement orders of the bright part and the dark part. Pattern acquisition device.

The structured near-infrared light has different illumination patterns in which a combination of bright and dark states in the vicinity of one bright part irradiated with near-infrared light or one dark part not irradiated with near-infrared light is different. The subcutaneous pattern acquisition apparatus according to claim 1, comprising:

The light source unit is an array light source in which a plurality of light sources capable of irradiating near infrared light are arranged in an array,
The subcutaneous light pattern acquisition device according to claim 4, wherein the light source control unit performs lighting control of each of the light sources constituting the array light source.

The light source unit is a line light source in which a plurality of light sources capable of irradiating near infrared light are arranged in a line shape,
The subcutaneous light pattern acquisition apparatus according to claim 4, wherein the light source control unit performs lighting control of each of the light sources constituting the linear light source.

The light source unit further includes an optical filter designed to make the combination of the light and dark states unique.
The subcutaneous light pattern acquisition apparatus according to claim 5, wherein the light source control unit performs insertion control of the optical filter.

The subcutaneous pattern acquisition device further includes a storage unit in which parameters for associating a spatial coordinate system and a coordinate system in the imaging data are recorded,
The subcutaneous pattern acquisition apparatus according to claim 1, wherein the three-dimensional information calculation unit calculates three-dimensional information of the structure using the parameters.

The subcutaneous pattern acquisition apparatus according to claim 1, further comprising a template registration unit that registers the subcutaneous pattern as a template.

Wherein said subcutaneous pattern three dimensional information calculating unit has calculated, by comparing the template registered in advance, further comprising an authentication unit which performs authentication of the subcutaneous pattern of the three-dimensional information computing section is calculated, according Item 4. The subcutaneous pattern acquisition device according to Item 1.

A light source unit that irradiates a part of the living body with structured near-infrared light and unstructured near-infrared light, respectively, and controls the unstructured near-infrared light to be emitted from the living body. Irradiating a part of
Imaging a part of the living body and generating imaging data by the unstructured near-infrared light; and
Controlling the light source unit to irradiate a part of the living body with the structured near-infrared light; and
Imaging a part of the living body and generating imaging data by the structured near infrared light; and
The structured near-infrared imaging data and the unstructured near-infrared imaging data are compared, and the structured near-infrared imaging data and the structured data are compared. Determining the correspondence of the pixels with the imaging data with no near infrared light; and
Calculating three-dimensional information of a structure existing inside the living body based on the correspondence of the pixels, and making the three-dimensional information a subcutaneous pattern;
Subcutaneous pattern acquisition method including

Three-dimensional information of a structure existing inside the living body calculated based on image data obtained by imaging a part of the living body with each of structured near-infrared light and unstructured near-infrared light; A structure template comprising a structure data storage area in which three-dimensional information of a structure corresponding to an individual's subcutaneous pattern to be collated is stored.