An image capturing apparatus comprises an angular velocity detection sensor that detects an angular velocity, an acceleration detection sensor that detects an acceleration, a motion vector detection unit that detects a motion vector on the basis of an image captured by the image capturing apparatus; and a calculation unit that calculates an orientation angle of the image capturing apparatus on the basis of a detection value from the angular velocity detection sensor, a detection value from the acceleration detection sensor, and a detection value from the motion vector detection unit, wherein the calculation unit corrects an output of the angular velocity detection sensor using the detection value obtained by the motion vector detection unit, and calculates an orientation angle of the image capturing apparatus on the basis of the corrected value.

An image capturing apparatus comprises an angular velocity detection sensor that detects an angular velocity, an acceleration detection sensor that detects an acceleration, a motion vector detection unit that detects a motion vector on the basis of an image captured by the image capturing apparatus; and a calculation unit that calculates an orientation angle of the image capturing apparatus on the basis of a detection value from the angular velocity detection sensor, a detection value from the acceleration detection sensor, and a detection value from the motion vector detection unit, wherein the calculation unit corrects an output of the angular velocity detection sensor using the detection value obtained by the motion vector detection unit, and calculates an orientation angle of the image capturing apparatus on the basis of the corrected value.

An equatorial mount having a base, a right ascension base, a right ascension shaft, a declination base, a declination shaft, and a mount-rotation mechanism, the declination base rotatable about a right ascension axis relative to the right ascension base, and the declination shaft rotatable about a declination axis relative to the declination axis, wherein the mount-rotation mechanism is engageable and disenagageable from one or the other of the right ascension shaft and the declination shaft, to apply torque between the declination base and that shaft when engaged and to permit relative rotation of the shaft and the declination base when disengaged.

A technique that enables easily determining an attitude of a laser scanning apparatus is provided. A surveying device includes a sunlight incident direction measurement unit, a Sun direction acquisition unit, and an attitude calculator. The sunlight incident direction measurement unit measures an incident direction of sunlight that enters a laser scanning apparatus, based on a detected waveform of incident light entering the laser scanning apparatus. The Sun direction acquisition unit acquires a direction of the Sun as seen from the laser scanning apparatus, from astronomical data, based on a position of the laser scanning apparatus. The attitude calculator calculates an attitude of the laser scanning apparatus in an absolute coordinate system, based on the incident direction of sunlight and the direction of the Sun as seen from the laser scanning apparatus, which is acquired from the astronomical data.

A technique that enables easily determining an attitude of a laser scanning apparatus is provided. A surveying device includes a sunlight incident direction measurement unit, a Sun direction acquisition unit, and an attitude calculator. The sunlight incident direction measurement unit measures an incident direction of sunlight that enters a laser scanning apparatus, based on a detected waveform of incident light entering the laser scanning apparatus. The Sun direction acquisition unit acquires a direction of the Sun as seen from the laser scanning apparatus, from astronomical data, based on a position of the laser scanning apparatus. The attitude calculator calculates an attitude of the laser scanning apparatus in an absolute coordinate system, based on the incident direction of sunlight and the direction of the Sun as seen from the laser scanning apparatus, which is acquired from the astronomical data.

A posture angle calculation apparatus 170 includes an acquisition unit 171 configured to acquire an output of an acceleration sensor 151 installed to output acceleration of a moving apparatus that moves along a moving surface in a vertical axis direction with respect to the moving surface and to acquire an output of a gyro sensor 152 installed to output an angular velocity about the vertical axis. The posture angle calculation apparatus 170 further includes a calculation unit 172 configured to assume, when the acceleration is larger than reference acceleration Rg, and the angular velocity is smaller than a preset reference angular velocity Rw, the angular velocity ω.sub.z is zero and calculate a posture angle of the moving apparatus about the vertical axis. The posture angle calculation apparatus 170 further includes an output unit 173 configured to output data of the calculated posture angle.

A posture angle calculation apparatus 170 includes an acquisition unit 171 configured to acquire an output of an acceleration sensor 151 installed to output acceleration of a moving apparatus that moves along a moving surface in a vertical axis direction with respect to the moving surface and to acquire an output of a gyro sensor 152 installed to output an angular velocity about the vertical axis. The posture angle calculation apparatus 170 further includes a calculation unit 172 configured to assume, when the acceleration is larger than reference acceleration Rg, and the angular velocity is smaller than a preset reference angular velocity Rw, the angular velocity ω.sub.z is zero and calculate a posture angle of the moving apparatus about the vertical axis. The posture angle calculation apparatus 170 further includes an output unit 173 configured to output data of the calculated posture angle.

A technique relates to remote guidance to observe an object. A remote user device receives remote viewing information from a guiding user device associated with a first location, the remote viewing information defining a first perspective at the first location for observing the object in an atmosphere. The remote user device translates the remote viewing information into local viewing information, the local viewing information defining a second perspective at a second location for observing the object in the atmosphere, the first location being different from the second location. The remote user device guides a view of the remote user device to the object in the atmosphere relative to the second location according to the local viewing information.

The present disclosure disclosures a sensor and a control method of the sensor. The sensor may include a protective housing, an optical component, a control component, an interface component, and a circuit board mounted within the protective housing. The circuit board may include a plurality of detection components, including a photosensitive detection component and a tilt angle detection component. The control method of the sensor may include determining whether the photovoltaic module operates in an angle detection range of the photosensitive detection component, and determining whether an actuation condition of the photosensitive detection component is satisfied. In response to a determination that the actuation condition of the photosensitive detection component is satisfied, the photosensitive detection component may be actuated. In response to a determination that the actuation condition of the photosensitive detection component is not satisfied, the tilt angle detection component may be actuated.

The present disclosure disclosures a sensor and a control method of the sensor. The sensor may include a protective housing, an optical component, a control component, an interface component, and a circuit board mounted within the protective housing. The circuit board may include a plurality of detection components, including a photosensitive detection component and a tilt angle detection component. The control method of the sensor may include determining whether the photovoltaic module operates in an angle detection range of the photosensitive detection component, and determining whether an actuation condition of the photosensitive detection component is satisfied. In response to a determination that the actuation condition of the photosensitive detection component is satisfied, the photosensitive detection component may be actuated. In response to a determination that the actuation condition of the photosensitive detection component is not satisfied, the tilt angle detection component may be actuated.