1168 results about "Visual range" patented technology

The presently disclosed invention is a device for measuring horizontal and vertical eye movement. The device is adaptable to utilize multiple measurement technologies (e.g., direct infrared, electro-oculography, ultrasound, or video), and is capable of measuring each eye individually or both eyes jointly. The present invention overcomes the shortcomings of the prior art by requiring minimal adjustment for accurate measurement, only minimally obstructing the user's visual range (i.e., slightly more than the user's own nose), being made of low cost and readily available material, and by being comprised of a comfortable and efficient design of an adjustable nose and forehead piece with an adjustable head strap. An additional advancement over the prior art is that the presently disclosed device does not require an aperture or frame, as did the prior art, or any additional optics such as, lenses, mirrors, or prisms. The device rests on the user's nose with the sensors located near the nasal area of the eye(s) utilizing a nose bridge component to house the measuring technology. The forehead piece and head strap provide for ease of alignment, added stability, and a wide range of test applications. The greater field of vision provided by this device allows for a wide range of test applications.

The invention relates to an on-board intelligent alarming method and a device, wherein, the method combines a longitudinal anti-collision pre-warning method based on the single-eye vision and an accident automatic help-calling method, realizes preventing the rear-end accidents, strives for helping time, reduces injuries and deaths, effectively prevents the collision accidents and personnel deaths caused by the collision, and improves the running safety of the automobile; the device mainly comprises three parts: an on-board terminal, a monitoring center and a user end; the method and the device use the machine vision technique to differentiate the moving vehicles in the front, have high precision and wide visible range, can effectively probe the obstacles, reduce the error reporting possibility and prevent the collision accidents. The method and the device can improve the safety of the vehicle, thus having extremely large application value and prospect.

A device for determining a reproduction position of a source of sound for audio-visual reproduction of a film scene from a plurality of individual pictures with regard to a reproduction surface having a predetermined width and a projection source having a projection reference point comprises means for providing a recording position of the source of sound, a camera position during recording, and an aperture angle of the camera during recording. In addition, provision is made of means for transforming the recording position of the source of sound to a camera coordinate system, the origin of which is defined, in relation to a camera aperture, to obtain a recording position of the source of sound in the camera coordinate system. Means for calculating the reproduction position of the source of sound in relation to the projection reference point determines whether the aperture angle of the camera equals a predetermined aperture angle, and whether or not a source of sound is located within the visual range of the camera. If the current aperture angle of the camera differs from the predetermined standard aperture angle, the reproduction position of the source of sound is spaced toward a viewer, or away from the viewer, by a distance which depends on the ratio of the standard aperture angle to the current aperture angle. Hereby, automatable sound-source positioning is achieved so as to provide not only a visually realistic, but also an acoustically realistic situation in a reproduction room using wave-field synthesis methods.

The invention relates to a miniature unmanned helicopter auto flight control system which comprises an on-board control system, wherein, an on-board computer gets signals from sensors through a serial port, and exchanges data with a ground-based computer through on-board and ground wireless Ethernet access points; the on-board computer carries out serial communication with a digital signal processor to control a steering engine set of the unmanned helicopter; a remote control signal receiver outputs to the digital signal processor and then is connected with the on-board computer through a serial port, and an auto control signal and a ground remote control signal are accumulated to get a current steering engine control signal. And the auto flight control system also comprises a ground control system, wherein, the ground-based computer transmits flight control instructions to the on-board computer and receives and records flight data; through operating a ground helicopter remote controller, manual control instructions can be transmitted to the on-board remote control signal receiver via wireless radio frequency signals. The invention can improve the auto flight ability of the miniature unmanned helicopter, strengthen system reliability, expand the application range of the unmanned helicopter and enable the helicopter to complete given missions beyond the visual range.

The invention discloses a mechanical arm system based on stereo visual serving and a calibrating method thereof; the mechanical arm system comprises a mechanical arm, visual equipment and main control equipment, wherein a vision marker is mounted at the tail end of the mechanical arm; the vision marker is positioned within a vision range of the visual equipment; the visual equipment and the mechanical arm are independently mounted and used for obtaining images of a target object and the vision marker so as to identify and position the posture of the vision marker relative to the target object; and the main control equipment is used for figuring out the angle of each joint of the mechanical arm according to an image of the vision marker, so as to control the mechanical arm to operate the target object. According to the invention, the mechanical arm can be corrected when the joints on the mechanical arm have gaps between each other, so that accurate operation tasks can be finished by using the mechanical arm system.

A visible wavelength range proximity sensor includes a visible light emitter with a peak wavelength in a visible wavelength range, and a plasmonic ambient light sensor, where a proximity sensing mode and an ambient light sensing mode are time multiplexed.

The invention discloses a flight control method of a small unmanned helicopter. According to the method, a flight execution unit, a state sensor unit, a parachute unit, a flight control unit, a ground control terminal and a remote controller unit are adopted, so that the effects of obstacle-avoidance flight, water-surface-avoidance landing, self-adaptive flight attitude control, power monitoring, automatic parachute opening in case of engine stop, flight control through a flight control panel, flight path generation through a signal panel and the like can be achieved. The flight control method of the small unmanned helicopter has the advantages that the self-adaptive obstacle-avoidance flight capacity of the small unmanned helicopter can be improved; the small unmanned helicopter can operate in a beyond visual range according to a preset instruction, can slowly land by using a parachute in an emergency of the engine stop in the air, is protected from being damaged, and can automatically avoid a water surface during landing.

A gate inhibition and work attendance device based on face discrimination technique are disclosed those include: cam used to read the face images, embedded system used to transmit the video information, input device used to input the identification information and computer used to distinguish the images and manage the work attendance. Said cam is connected with the embedded system, said embedded system is connected with the input device, and said embedded system is connected with the computer data. The gate inhibition and work attendance device also include mirror face used to confirm the side position of face, the cam is mounted on the top of mirror face, the optimal visual range of the cam is matched with the mirror face; said computer includes: image acquisition module, face image library, face detecting position module, image preprocessing module, face exercising module and face discrimination module. The invention provides the gate inhibition and work attendance device based on face discrimination technique with characterized that high discrimination success rate, easy to realize, high-speed to discriminate and judge, convenient to install and low implement cost.

An optical sight system that comprises a combination of a thermal scope with a CCD visual-range attachment connectable to the thermal scope with a quick-release connector. The system is equipped with a device that automatically activates the CCD visual-range attachment when the latter is connected to the thermal scope and with a comparator that compares the video signal of the CCD attachment with the video signal of the thermal scope for sending the brightest video signal to the thermal scope display.

A head-up display device includes a light source, a display unit for producing display virtual images including an alarm display image, a mirror for reflecting the light to show the alarm display image in a field of front view of a driver, at least one on-vehicle device that the driver operates, a visual-line shift detecting means and a display position shifting means. The mirror reflects the light representing the alarm display image so that a driver can see the alarm display image in a display area that is set on one of a front windshield and a combiner in front of the driver and in a field of front vision of the driver. The visual-line shift detecting means detects a visual line shift of the driver from a usual forward visual range of the driver toward the on-vehicle device that the driver operates. The display position shifting means shifts positions of the display area to a position between the usual forward visual range and a portion/part, of the on-vehicle device at operation, which the driver watches during the operation when the visual-line shift detecting means detects the visual line shift from the usual forward visual range toward the on-vehicle device.

The invention relates to a non-overlapping visual field multiple-camera human body target tracking method, in particular to a method for carrying out target matching and tracking in multi-camera videos of a non-overlapping visual field under the condition of known topological relation among multiple cameras, comprising the following steps: firstly, establishing a topological relation matrix among multiple cameras, then extracting a foreground image of a pedestrian target followed by selecting a tracking target in the visual range of a certain camera by a human-machine interaction interface, using a mixed Gaussian model to extract the appearance characteristics of the target, comprising colour histogram characteristic and UV colour characteristic, in the whole tracking process, adopting a tree structure to manage tracking task, using Bayesian model to estimate overall similarity, and searching for the optimal matching target according to the overall similarity. The invention has the advantages of high precision, simple algorithm, easy realization, strong instantaneity and the like, and can provide a new real-time and reliable method for multi-camera target recognition and tracking.

The invention provides an information display system capable of automatically adjusting the visual range and a display method of the information display system. After a sensing module is used for capturing the information of a driver and detecting the distance between the sensing module and the driver, the face feature information comprising the positions of the eyes, the face deflection angle, the drive watching position and the like of the driver is further identified to estimate the projection range, namely the position of the visual range of the driver, of the driving information on a front windshield, the position and the angle of a projection device are adjusted according to the projection range, and therefore the projection device can project a picture at the accurate position of the front windshield.

The invention discloses a display processing method of a screen of a wearable device, and the wearable device. The method comprises the following steps: determining a position of a display region of the screen according to an operation mode of a user for viewing the current content displayed by the screen, wherein the display region is partial region of the screen, and the operation mode comprises one of the operation of appointing the display region and the operation of automatically recognizing the display region; lightening the display region at the position of the display region to display the current content, so that a processor of the wearable device can self-adaptively display the current content in the visual range of the user when the wearable device is rotated.

The invention relates to a biologic water quality monitoring system for perceiving fish behaviors based on vision, comprising a transparent aquarium for containing fishes, cameras for monitoring fish behaviors, video capture cards and a water quality monitoring center, wherein the aquarium is positioned in the visual ranges of the cameras; all cameras are in data communication link with the waterquality monitoring center by the video capture cards; and the water quality monitoring center comprises an image capture module, an image processing module, a target tracking module and a fish behavior data analysis module. The fish behavior data analysis module comprises a data modeling part and a data matching part, obtains data of image frame sequence of a water area to be analyzed and substitutes the data into model formals (6) and (7) for matching. If the difference between a present calculated value and a normal action value is in the range of a default threshold, the fact represents that the fish behaviors are normal and judges that water quality conditions are good. If the difference is beyond the range of the default threshold, the fact judges that the water is polluted. The biologic water quality monitoring system reduces cost, is suitable for large-scale application and has good practicality.

The invention discloses a motion control system and a motion control method for a spherical robot with visual feedback. The motion control system comprises a binocular visual system, a gyroscope, a spherical robot body, an embedded-type controller and a wireless communication module. The motion control system is positioned through cooperation between a visual camera and the gyroscope and measures self motion parameter information of the robot in real time, and the self motion parameter information is used as feedback to be input into a controller. After conducting calculations, the controller issues a control order to a motor on the spherical robot so as to achieve tracking of a targeted path. Meanwhile, the controller can also monitor state information of the robot remotely and give an operation order. The motion control method sets up an inner ring control strategy by adopting a state feedback algorithm, sets up an outer ring control strategy by adopting a curvature tracking algorithm and conducts control through combining an inner ring and an outer ring. The left and right image sequence can be collected in real time through the binocular visual system. By means of adoption of a binocular visual range algorithm, postures and changes of position of the spherical robot can be figured out. By mean of the gyroscope, errors caused by an unstable platform are complemented, and obtained results are used as feedback to be brought into a control algorithm.

An apparatus to enhance driving safety for vehicles especially in the dynamic conditions at turning includes a display panel installed on an inner side of the vehicle A-pillar and a video camera installed on an outer side of the A-pillar. Vision outside the A-pillar can be dynamically captured by the video camera and displayed on the display panel. Hence the visual scope of the driver increases. A video camera array can be provided to capture the images of different angles. And an image processor is provided to process the images and display a full scope image on a full scope display panel on the inner side of the A-pillar. Thereby the driver can get a visual image equivalent to a transparent A-pillar to enhance driving safety.

The invention discloses a method for generating an interactive dynamic panoramic image, which comprises the steps of converting each frame of image in a captured video to a latitude and longitude image through latitude and longitude mapping coordinates, further suturing into the panoramic image through optical reduction, then carrying out video coding, generating a panoramic video according to the time, converting each frame of the image in the panoramic video to a spherical image of a world coordinate system, carrying out view conversion and projection transformation, then carrying out synchronous playing with the time, and generating the interactive dynamic panoramic image. The interactive dynamic panoramic image can lead a user to view the dynamic panoramic image from different viewing angles, and the images adopting the conversion through spherical coordinates can lead the image distortion to be small, lead the images to be in line with the viewing effect of human eyes and increase the visual range of the dynamic panoramic image.

An electronic patient monitoring system that includes a not easily removable patient identification and monitoring device, an observer transmitter/receiver device to communicate with the not easily removable patient identification and monitoring device when within a specified visual range of each other within a predefined time interval, and a central computer system including, at least, a computer processor, communications components and system software to communicate with the observer transmitter/receiver device at specified/predetermined time intervals to receive observer- and patient-specific information.

A device for locating a parked vehicle has a remote mobile unit with an aerodynamic housing, including a base and a transparent lens covering an illuminating visual indicator, such as a strobe light. The base contains a battery power source, an electronic sound emitter and control circuitry, including a radio signal transceiver and a spread spectrum processor. An adhesive membrane layer on the bottom of the base facilitates quick and easy attachment to a vehicle, at a location which is easily visible from a distance (e.g. the roof or other high exterior position). A wireless handheld control unit has an internal I/O processor, pushbuttons for entering commands, a spread spectrum processor and a radio transceiver and antenna for sending and receiving spread spectrum signals to and from the transceiver in the mobile unit in order to selectively activate and deactivate the illuminating visual indicator and sound emitter. The distinct emitted sound and flash sequence and/or rhythm of the illuminating indicator can be selectively programmed and/or changed by the user with the wireless handheld unit. The sound emitter and illuminating indicator have a respective audible and visual range of at least 1,000 feet.