Abstract: Shadows caused by opacities and obstructions (such as blood vessels) can block detection of structural information of objects below the shadow-causing structure, affecting visualization and analysis of those deeper structures. An image processing method for removing these shadows includes applying a low pass filter to an energy profile of an image to remove high frequency fluctuations in energy, thereby effectively recovering lower energy inside shadow regions and removing high frequency speckle. The image is then adjusted, for example by linear scaling, based on the filtered energy profile. Two dimensional filters may also be applied for volumes.

Abstract: An ophthalmologic apparatus includes: an objective lens that faces a subject's eye; an alignment light emitting unit that irradiates the subject's eye with alignment light to perform measurement of alignment between the objective lens and the subject's eye; an alignment reflection light receiving unit that receives alignment reflection light, which is a reflection of the alignment light from the subject's eye; an anterior segment camera that receives corneal reflection light; and a holder positioned between the anterior segment camera and the objective lens to hold the anterior segment camera, wherein the holder includes an imaging transmissive portion that transmits the corneal reflection light to the anterior segment camera, a first light-transmissive portion that transmits the alignment light from the alignment light emitting unit, and a second light-transmissive portion that transmits the alignment reflection light from the subject's eye.

Abstract: An ophthalmic apparatus includes an irradiation optical system, an optical scanner, an optical splitting and combining unit, and a detector. The irradiation optical system includes a light source and is configured to generate measurement light using light from the light source. The optical scanner is configured to deflect the measurement light and to guide the deflected measurement light to a subject's eye. The optical splitting and combining unit is configured to guide the measurement light to the optical scanner and to generate interference light between reference light that is generated from the light from the light source and returning light of the measurement light from the subject's eye. The detector is configured to detect the returning light and the interference light via the optical splitting and combining unit.

Abstract: Provided are a field display device and the like capable of displaying a plurality of fields to be displayed on a screen reliably and immediately. A field information management device is configured such that: a plurality of fields for cultivating plants can be displayed on a main screen, and a plurality of pieces of character information related to the fields that can be displayed on the main screen can be displayed on a sub-screen simultaneously with the main screen; and shape information of each of the fields that can be displayed on the main screen is displayed on the sub-screen together with the character information related to the corresponding field.

Abstract: A light wave distance meter according to the present invention includes: a light-emitting element that emits a distance measurement light; a light-receiving element that outputs a light-receiving signal; a frequency conversion unit that includes a bandpass filter; an arithmetic control unit that computes a distance value to a measurement object; a signal generator that generates a signal having a predetermined frequency; a waveform conversion unit that generates a waveform conversion signal; pulse generators that generate pulse signals by pulsating the signal having a predetermined frequency so as to have a waveform profile of a signal constituted of desired frequency components on the basis of the signal output from the signal generator and the waveform conversion signal output from the waveform conversion unit; and a drive unit that emits the distance measurement light based on the pulse signals.

Abstract: An optical scanner includes: a light source; a deflection element including a plurality of pixels arranged one-dimensionally or two-dimensionally; a one-cycle diffraction grating including, among the pixels, continuous N pixels, where N is a natural number of two or more; the one-cycle diffraction grating having a length d in the alignment direction that is smaller than a wavelength ? of the light emitted from the light source; and a phase modulation controller configured to control a phase modulation amount of each of the pixels. Incident light is emitted from the light source obliquely from the reflecting surface at an incident angle ?1. Sin ?i+(?/d)>1 or sin ?i?(?/d)>1 is satisfied.

Abstract: In measurement using infrared images that are obtained by nighttime aerial photography, a correspondence relationship between the infrared images is determined with high accuracy by the following method. In this method, agricultural land is photographed from the air at night by using an infrared camera mounted on a UAV. In the state in which multiple infrared light emitting points are installed on agricultural land, the agricultural land is photographed multiple times by the infrared camera while the UAV flies at night in such a manner that a part of the agricultural land is commonly contained in multiple infrared photographic images. Then, a correspondence relationship between the multiple infrared photographic images is determined by using bright points of the infrared light emitting points in the part of the agricultural land commonly contained in the infrared photographic images.

Abstract: Provided is a scanning range setting method using a surveying instrument configured to measure a distance to a measurement point by using a distance measuring light and measure an angle to the measurement point, and a scanner configured to scan with a scanning light around a rotation axis to acquire three-dimensional point group data. The method includes steps of: (A) measuring a distance to one or more measurement points by the surveying instrument, (B) storing coordinates and angles of the measurement points, (C) automatically setting an area including all of the measurement points as a scanning range by the scanner, and (D) scanning the scanning range by the scanner, wherein a coordinate system of the scanner and a coordinate system of the surveying instrument match each other.

Abstract: A tilt analysis system including: a surveying device configured to survey a position of a survey target device by irradiating the survey target device with surveying light, the survey target device including an attachment portion to be attached to a columnar object, and a reflector that reflects the surveying light; a portable terminal device; a reference value acquisition unit configured to acquire a first point obtained by surveying the position of the survey target device attached to a bottom of the columnar object; a column top value acquisition unit configured to acquire a second point obtained by surveying the position of the survey target device attached to the top of the columnar object; a tilt analysis unit configured to generate tilt information indicating in which direction the columnar object tilts; and a tilt information output unit configured to output the tilt information generated by the tilt analysis unit.

Abstract: The ophthalmologic device to be coupled to a correcting device for correcting subject eyes, the correcting device including a right-left pair of two examination windows and a right-left pair of arrangement mechanisms that each arrange first optical elements, includes: a coupling member configured to be detachably coupled to each of coupled members provided on a side surface of the correcting device on a side opposite to an eyepiece side for each subject eye; a second optical element arranged at a position facing a second examination window opposite to a first examination window which is an eyepiece window, when the coupling member is coupled to the coupled member, the second optical element configured to branch a second optical path from a first optical path along the optical axes; and an objective measuring system arranged on the second optical path and configured to acquire ocular characteristics of each subject eye.

Abstract: The survey system includes a mobile body equipped with a scanner configured to perform scanning by a distance measuring light, a position measuring device configured to measure a position of the scanner, and a posture detecting device configured to detect a posture of the scanner, the posture detecting device includes an imaging unit configured to periodically acquire image data, a 3-axis angular velocity sensor configured to detect 3-axis posture angles of the scanner, and an arithmetic control unit, and the arithmetic control unit is configured to calculate posture information of the scanner by summing photographing-time 3-axis posture angles (SP0, SP1, SPn) of the scanner acquired in each photographing by image analysis of the image data, and 3-axis posture relative displacement angles of the scanner calculated from detection values of the 3-axis angular velocity sensor.

Abstract: A surveying instrument comprises a monopod installed on a reference point, a surveying instrument main body provided at a known distance from a lower end of the monopod and at a known angle with respect to an axis of the monopod and having a reference optical axis, wherein the surveying instrument main body performs an image pickup of an object to be measured and scans the object to be measured by a closed loop scan pattern respectively at a pre-rotation and a post-rotation of the surveying instrument main body, obtains cross points of a locus of a scan pattern of the pre-rotation and the post-rotation, obtains deflection angles of the cross point with respect to the reference optical axis of the pre-rotation and the post-rotation, and calculates a rotation angle of the surveying instrument main body based on a deviation between both of the deflection angles.

Abstract: An ophthalmological information processing apparatus includes an acquisition unit and an image correcting unit. The acquisition unit is configured to acquire a front image depicting a predetermined site of a subject's eye in multiple gradations and an OCT image of the subject's eye. The image correcting unit is configured to correct a pixel value in a region including a first position of the predetermined site in the OCT image based on a pixel value at a second position corresponding to the first position in the front image.

Abstract: A grain measuring device 10 includes a reaping determination unit 11 in a combine harvester 1 to determine a state of reaping grains; and a measurement unit 12 configured to measure a component of the grains and save a result of measurement when the reaping determination unit 11 determines that the combine harvester 1 is in in the state of reaping the grains.

Abstract: A slit lamp microscope according to some aspect examples includes an illumination system and photographing system. The illumination system projects slit light onto an anterior segment of a subject's eye. The photographing system includes an optical system and an image sensor. The optical system directs light from the anterior segment onto which the slit light is being projected. The image sensor includes a light detecting surface that receives the light directed by the optical system. Further, a subject plane, a principal plane of the optical system, and the light detecting surface are arranged so as to satisfy a Scheimpflug condition. Here, the subject plane includes a focal point of the illumination system in which a position of the focal point is shifted on account of a refractive index of a tissue of the anterior segment.

Abstract: The neutron emission unit is configured to emit neutrons such that a center axis (Nh) of neutron emission intersects a center axis direction of collimators (23a to 23e). A calculation unit is capable of generating information about an inspection object in the center axis direction of the collimators, based on position information of the neutron detector and/or position information of the neutron emission unit, information about an angle (?1) at which the center axis of the neutron emission intersects the center axis direction of the collimators, and a neutron amount detected by the neutron detector.

Abstract: A corneal endothelial cell imaging apparatus includes an irradiation system, a light receiving system, and a controller. The irradiation system includes a spatial light modulator modulating light from a light source, and is configured to irradiate slit-shaped illumination light toward a cornea by modulating the light using the spatial light modulator. The light receiving system is arranged obliquely to the irradiation system and includes an image sensor receiving reflected light from the cornea. The controller is configured to control the spatial light modulator so as to irradiate the illumination light onto an illumination region on the cornea, and is configured to control the image sensor to set an opening range on a light receiving surface corresponding to the illumination region on the cornea and to capture a light receiving result of reflection component from a corneal endothelium obtained by a light receiving element in the set opening range.

Abstract: An ophthalmic apparatus includes an objective lens, an illumination optical system, a mounting unit, an imaging optical system, a communication unit, and a controller. The illumination optical system is configured to generate illumination light using light from a light source, and to illuminate a subject's eye with the illumination light through the objective lens. The mounting unit is configured to allow an external device including a sensor to be mounted so that the sensor is arranged on an imaging optical path. The imaging optical system is configured to guide returning light of the illumination light from the subject's eye to the imaging optical path. The communication unit has a communication function with the external device. The controller is configured to control the illumination optical system and to control the sensor through the communication unit to synchronize with control for the illumination system.

Abstract: An ophthalmic imaging apparatus of an exemplary aspect includes a data acquisition device, image constructing circuitry, and composing circuitry. The data acquisition device is configured to sequentially apply optical coherence tomography (OCT) scans to a plurality of regions different from each other of a fundus of a subject's eye in order and under a condition according to a fundus shape, to acquire a plurality of pieces of data corresponding to the plurality of regions. The image constructing circuitry is configured to construct an image from each of the plurality of pieces of data. The composing circuitry is configured to construct a composite image of a plurality of images constructed from the plurality of pieces of data by the image constructing circuitry.

Abstract: A technique for calculating charge in accordance with a state of use of a user in a rental business of total stations is provided. A total station includes a positioning unit, an operation receiving unit, a positioning mode selector, and a counter. The positioning unit performs positioning by using pulsed laser light. The operation receiving unit receives operation of a user. The positioning mode selector selects one of a first positioning mode and a second positioning mode on the basis of operation of the user to the operation receiving unit. In the first positioning mode, positioning is performed at a specific point at a relatively small laser wave number. In the second positioning mode, positioning is performed at a specific point at a relatively large laser wave number. The counter counts up each of the selected times of the first positioning mode and the second positioning mode.