Canon Kabushiki Kaisha

Takuro Miyasato

Kazuhiko Fukutani

Ryuichi Nanaumi

Kazuhiro Miyasa

Kohtaro Umezawa

Nobuhito Suehira

Hiroshi Abe

Takuji Oishi

Fumitaro Masaki

Kazuhito Oka

Kota Nakano

Jumpei Shirono

Robert A Kruger

Takahiro Suita

Yoshiko Nakamura

Kenji Mitsuhashi

Employed is an information acquisition apparatus which acquires characteristic information about an object using a reception signal of acoustic waves generated by the object that is irradiated with light, the apparatus having: region acquisition unit for acquiring information indicating a plurality of regions of mutually different characteristics, in the object; sound velocity determination unit for determining sound velocity in the plurality of regions, using the information indicating the plurality of regions; and characteristic information acquisition unit for acquiring the characteristic information about the object, using the sound velocity and the reception signal.

Information acquisition apparatus and signal processing method

An information acquisition apparatus according to the present invention includes a container configured to store a deformable acoustic matching member, a receiving unit configured to receive an acoustic wave generated from an object and output a signal, and a processing unit configured to acquire object information based on the signal. The processing unit acquires sound speed information about the object, acquires sound speed information about the acoustic matching member, acquires positional information about the acoustic matching member, acquires propagation time information about the acoustic wave between an interesting position of the object and the receiving unit using the positional information, the sound speed information about the object, and the sound speed information about the acoustic matching member, and acquires the object information about the interesting position using the signal and the propagation time information.

Information acquisition apparatus and information acquisition method

An ultrasonic apparatus includes an ultrasonic wave generating member having a light absorbing member that generates an ultrasonic wave when irradiated by a light from a light irradiating portion, and a transducer that detects the ultrasonic wave and converts the ultrasonic wave into an electric signal. The ultrasonic wave generating member includes an area that has a different light absorption coefficient in an irradiation area irradiated by the light from the light irradiating portion. Furthermore, in an area in which the light absorbing member is disposed, when an area irradiated by the light from the light irradiating portion is referred to as a transmitted ultrasonic wave generating area, the transmitted ultrasonic wave generating area functions as a surface sound source.

Ultrasonic apparatus

Provided is an object information acquiring apparatus having: a receiving unit receiving an acoustic wave generated from an object, which has been irradiated with light, at a plurality of receiving positions and outputting time-series receiving signals; and a processing unit acquiring characteristic information by back-projecting the receiving signals, and the processing unit includes: a unit acquiring, for each receiving position, a dispersion index of light intensity distribution on a back projection spherical surface; a unit acquiring, for each receiving position, an angle range in the back projection based on the dispersion index; and a unit acquiring the characteristic information by back-projecting the receiving signals in the angle range.

Photoacoustic information acquiring apparatus and processing method

An optical property distribution, such as an absorption coefficient of the inside of a subject, is highly precisely acquired. A photoacoustic imaging apparatus includes an acoustic converting unit configured to receive acoustic waves generated by irradiating a subject with emitted light and to convert the acoustic wave to an electrical signal; and a processing unit configured to determine a light intensity distribution inside the subject on the basis of a light intensity distribution or an illuminance distribution of the light incident on the surface of the subject and to generate image data on the basis of the electrical signal and the determined light intensity distribution inside the subject.

Photoacoustic imaging apparatus, photoacoustic imaging method, and storage medium

An object information acquiring apparatus, comprises an irradiating unit configured to irradiates an object with pulsed light; an acoustic wave detection unit configured to detect an acoustic wave generated from the object irradiated with the pulsed light and convert the acoustic wave into an electric signal; a storage unit configured to store a normalized light fluence distribution, which is a light fluence distribution normalized for a region of a predetermined size; and a processing unit configured to acquire characteristic information on the object using the stored normalized light fluence distribution and the electric signal.

Object information acquiring apparatus and processing method

A display system comprises a display unit including a display screen, and a display control unit, wherein the display control unit sets at least one of luminance and a color map of the display screen based on wearing information indicating a wearing state of an eyewear.

Display system, eyewear, and method for controlling display system

An object information acquiring apparatus, includes: an irradiator irradiating an object with light; a probe having a plurality of transducers which receive an acoustic wave generated from the object irradiated with the light and output a reception signal; and a controller using the reception signal to acquire property information on the interior of the object, and the probe has a plurality of apertures and a surface on which the plurality of transducers are arranged has a spherical surface shape.

Apparatus for acquiring property information on the interior of an object based on an acoustic wave generated from the object irradiated with light

An object information acquiring apparatus comprises an irradiating unit which irradiates light on an object; a holding member which includes a light-absorbing member whose optical characteristics with respect to irradiated light are known and which holds the object; a detector which detects acoustic waves generated by tissue in the object and the light-absorbing member due to light irradiation; and a computing unit which calculates optical characteristics of the tissue in the object and the light-absorbing member by using the detected acoustic waves and which corrects the optical characteristics of the tissue in the object by using the calculated optical characteristics of the light-absorbing member and the known optical characteristics.

Object information acquiring apparatus and control method for the object information acquiring apparatus

An image processing apparatus includes: an image obtaining unit configured to obtain a first image by imaging an object using a first imaging apparatus, a second image by imaging the object using a second imaging apparatus, a third image by imaging the object using an image capturing unit whose position is associated with the second imaging apparatus; and an alignment unit configured to align the object in the first image with the object in the second image so that observation information of the object in the first image matches observation information of the object in the third image.

Image processing apparatus, image processing method and storage medium

A position of a light absorber existing in a subject and an initial sound pressure of an acoustic wave generated at the light absorber are calculated from an electric signal converted from the received acoustic wave generated in response to irradiation of the subject with light. An optical absorption coefficient and an optical scattering coefficient of the subject are calculated using the position of the light absorber and the initial sound pressure of the acoustic wave generated at the position of the light absorber. A light quantity distribution in the subject is calculated using the optical absorption coefficient and the optical scattering coefficient of the subject. An optical absorption coefficient distribution in the subject is calculated using the light quantity distribution in the subject and an initial sound pressure distribution in the subject obtained from the electric signal.

Photoacoustic imaging apparatus, photoacoustic imaging method, and program

A photoacoustic imaging apparatus includes holding members configured to hold a subject, an acoustic wave conversion unit configured to receive an acoustic wave generated by irradiating the subject, which is held by the holding members, with light from a light source and convert the acoustic wave into an electric signal, a processing unit configured to generate image data from the electric signal, and an imaging unit configured to capture an optical pattern generated on a light diffusion member by emitting the light to the light diffusion member arranged on a surface of a side where the subject is irradiated with the light in the holding members where the holding members contact the subject in holding the subject, wherein the processing unit calculates light absorption coefficient distribution in the subject based on the optical pattern captured by the imaging unit and the electric signal acquired by the acoustic wave conversion unit.

Photoacoustic imaging apparatus and photoacoustic imaging method

A three-dimensional image captured by imaging a subject using a first imaging device is acquired. A two-dimensional image captured by imaging a surface of the subject using a second imaging device is acquired. Information representing the surface position of the subject is acquired from the three-dimensional image. A projection image in a case where seeing the three-dimensional image from the viewpoint of the second imaging device is generated based on the information representing the surface position. The three-dimensional image is aligned with the two-dimensional image with respect to the subject using the projection image and the two-dimensional image.

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Tokyo, Japan

Takuro Miyasato