An object is to improve accuracy of autofocus control. Accordingly, an imaging device according to the present technology includes an autofocus control unit that performs operation of autofocus according to a predetermined manipulation, and a diaphragm mechanism control unit that performs opening and closing control of a diaphragm mechanism according to an amplification factor of a distance measurement signal during the operation of autofocus. Thus, during the operation of autofocus, control different from control of the diaphragm mechanism based on an imaging setting is performed, and accuracy of the autofocus control is improved.

To provide a system, a method and the like for acquiring more images or more quickly focused images. A control device acquires information regarding a situation of a range captured by an imaging device, determines a mode according to an assumed situation of the range captured by the imaging device among a plurality of focusing modes, and transmits designation information specifying the determined mode to the imaging device. The imaging device receives the designation information from the control device, and captures an image using the mode specified by the received designation information.

An electronic device includes a camera, a sensor for detecting a distance value relative to an object, a memory for storing calibration data for correcting a lens location of the camera based on the distance value detected by the sensor, and a processor. The memory stores instructions that, when executed, cause the processor to determine the lens location of the camera based on the distance value when the camera is operated, obtain lens location data for the distance value and the determined lens location, update the calibration data based on the lens location data, and determine the lens location of the camera based on the updated calibration data.

An electronic device includes a camera, a sensor for detecting a distance value relative to an object, a memory for storing calibration data for correcting a lens location of the camera based on the distance value detected by the sensor, and a processor. The memory stores instructions that, when executed, cause the processor to determine the lens location of the camera based on the distance value when the camera is operated, obtain lens location data for the distance value and the determined lens location, update the calibration data based on the lens location data, and determine the lens location of the camera based on the updated calibration data.

Provided is a calibration apparatus comprising: a driving control unit to drive an object provided with a lens in a movable range for moving the object in an optical axis-direction by sequentially controlling a plurality of drive units configured to drive the object within each of a plurality of sections into which the movable range is divided, in calibration of a drive apparatus including: the plurality of drive units; and a magnetic field detection unit configured to detect a magnetic field corresponding to a position of the object; a position acquisition unit to acquire position data of the object; a magnetic field acquisition unit to acquire magnetic field data corresponding to a position of the object; and a generating unit to generate, based on the position data and the magnetic field data, end point information to determine a driving range in each of the plurality of sections.

A collimator includes a front lens sleeve, a clamping groove disposed on the front lens sleeve, a linking sleeve fastened on the clamping groove, a snapping groove disposed on the linking sleeve distal the front lens sleeve, a connection sleeve slidably connected to the snapping groove, a constraint sleeve disposed on the snapping groove, and a limit groove disposed on an inner surface of the constraint sleeve. The components cooperate with each other. The test chart is tilted relative to the optical axis of the lens and makes the test chart distributed at different distances along the axis. When using the camera to shoot the collimator, the clarity of different components reflects the relative focus position of the camera so as to detect the vehicle mounted camera.

Optical assembly comprising a variable focal length lens assembly comprising a variable focal length lens and an actuating unit, wherein an energy absorption rate of energy absorbed by the variable focal length lens assembly depends on the applied controlling signal. The optical assembly comprises a controlling unit configured to control focal length settings of the variable focal length lens by providing respective controlling signals and to apply a default controlling signal for providing a default focal length and default energy absorption rate. The controlling unit provides a thermal stabilisation functionality, the thermal stabilisation functionality is defined by applying a varying controlling signal related to a varying focal length and applying a compensation controlling signal related to a compensating focal length.

Optical assembly comprising a variable focal length lens assembly comprising a variable focal length lens and an actuating unit, wherein an energy absorption rate of energy absorbed by the variable focal length lens assembly depends on the applied controlling signal. The optical assembly comprises a controlling unit configured to control focal length settings of the variable focal length lens by providing respective controlling signals and to apply a default controlling signal for providing a default focal length and default energy absorption rate. The controlling unit provides a thermal stabilisation functionality, the thermal stabilisation functionality is defined by applying a varying controlling signal related to a varying focal length and applying a compensation controlling signal related to a compensating focal length.

An image processing apparatus having appropriate capability while reducing power consumption is disclosed. The image processing apparatus comprises a first tracking unit and a second tracking unit having a higher processing accuracy and a greater operational load than the first tracking unit. The image processing apparatus computes an evaluation value pertaining to difficulty of tracking for a subject region as a tracking target determined in a target frame to which tracking processing is to be applied. The image processing apparatus, based on the evaluation value, activates both the first tracking unit and the second tracking unit, or deactivates at least one of the first tracking unit and the second tracking unit for a subsequent frame to the target frame.

The present disclosure discloses an electro-hydraulic varifocal lens-based method for tracking a 3D trajectory of a moving object. The method includes the following steps of: (1) obtaining a functional relation between a focusing control current and camera's intrinsic parameters; (2) obtaining a functional relation between focusing control currents of the electro-hydraulic varifocal lens and an optimal object distance; (3) initializing an object tracking algorithm, and taking an object tracking box as a subsequent focusing window; (4) carrying out first autofocusing, recording a focusing control current value after the autofocusing is completed, as well as a size and center point coordinates of the object tracking box; (5) calculating and recording coordinates of the object in 3D space; and (6) repeating steps (4) and (5) for the same object, and sequentially connecting the recorded coordinates of the object in 3D space into a trajectory.