77 results about "Glare (vision)" patented technology

The invention discloses a machine vision-based unmanned aerial vehicle automatic detection method and an unmanned aerial vehicle control method. According to the machine vision-based unmanned aerial vehicle automatic detection method and the unmanned aerial vehicle control method, an image acquisition device is utilized to automatically inspect the sky; adaption to the change of illumination is realized, and the direct irradiation of strong light is avoided; an image sequence of an area to be detected is obtained; a low-altitude aircraft such as an unmanned aerial vehicle is detected automatically according to target motion characteristics of images in the sequence and the difference of a target and background in each image; and the satellite positioning channel and remote control channel of the unmanned aerial vehicle are subjected to radio interference, so that control on the unmanned aerial vehicle can be realized. With the method of the invention adopted, a whole space domain can be monitored; the orientation of an optical imaging sensor can be automatically adjusted, so that the optical imaging sensor will not be exposed to the direct irradiation of strong light; and environmental background can be automatically learned in real time; and a target can be detected and captured. The method has strong adaptability to the environment and has outstanding economic and practical values.

The invention relates to a reading desk lamp evaluation method based on an ergonomic experiment. The reading desk lamp evaluation method comprises the steps of performance evaluation of average illumination and correlated color temperature, comfort level evaluation of average illumination and correlated color temperature, illumination uniformity evaluation, reflected glare evaluation, direct glare evaluation and color rendering property evaluation; an evaluation system is formed by outputs of respective evaluation scores of the six aspects and the weighted average of the evaluation scores; the establishment of performance evaluation of average illumination and correlated color temperature is based on a visual performance experiment; the establishment of comfort level evaluation of average illumination and correlated color temperature is based on a Christopher illumination-color temperature comfort curve; the establishment of illumination uniformity evaluation is based on a national standard; the establishment of reflected glare evaluation is based on a veiling reflected glare reception evaluation experiment; the establishment of direct glare evaluation is based on a national standard; and the establishment of color rendering property evaluation is based on quality factor (QF) indexes in a color quality grade drafted by American national standard institute. By adopting the reading desk lamp evaluation method, the relation between physical parameters and vision quality is established, a quality evaluation result can be output only by measuring the physical parameters of the reading desk lamp, the assessment routine is simplified, and the objectivity and the accuracy are higher.

An Optoelectronic apparatus, systems and methods to avoid the night-time dazzling of a driver's vision produced by the glare from the headlights of other vehicles. The disclosed embodiments include:

• (a) Intermittent lighting to illuminate the road, at least at times when glare should be avoided, as a substitute for the conventional continuous illumination produced by vehicle headlamps;
• (b) Synchronization of such intermittent illumination so that vehicles traveling in the same direction exhibit the same intermittent illumination phase and vehicles in opposite directions exhibit opposite intermittent illumination phases;
• (c) Protection of the driver(s) vision by preventing or attenuating at regular intervals of time the arrival of light into their eyes, including intermittent light pulses received from the already synchronized incoming vehicles;
• (d) Protection of the driver(s) vision by preventing or attenuating, at regular intervals of time, the arrival of reflected light, via rear-view mirrors, to their eyes, such protection including intermittent light pulses received from the already synchronized vehicles circulating in the same direction and behind said vehicle.

The invention discloses an expressway tunnel visual environment improvement device and method thereof. The device comprises an expressway tunnel and a tunnel illumination system. Supporting rods are symmetrically arranged on the two sides of the highway at the entrance and exit end of the expressway tunnel, a light shading plate with an adjustable opening in the upper end is connected to the supporting rods, the light shading plate blocks most sunlight, the other sunlight is emitted into the light shading plate, the light environment inside the light shading plate is changed, according to theintensity of the sunlight, the light shading plate is controlled by a light sensing controller to rotate, the adaptability of the light shading plate under different environments is improved, the vision environment of a driver at the entrance and exit region of the expressway tunnel can be effectively improved, no special illumination lamp needs to be added at the entrance and exit of the tunnel,the influence of the black-hole effect and white-hole effect on travelling safety can be effectively lowered, and the device is simple in structure, high in adaptability, and capable of effectively reducing energy waste and improving the energy-saving performance of the illumination system.

The invention discloses an intelligent anti-dazzling method and system of a sight tracking automobile. According to the system, a sight focus of a driver and an object emitting strong light within a sight angle range are tracked, vision of the driver is not affected by sudden strong light in an opposite direction through difference control of the strong light entering the eyes of the driver in different directions, and meanwhile human intervention on the strong light is reduced as much as possible; according to the system, an existing strong light source is obtained, and light transmittance ofa corresponding part of a windshield is adjusted so that the existing strong light source does not influence the sight of the driver; and meanwhile, according to the system, an existing detected object is used for predicting a light source which may emit the strong light, the position of the possible light source at the next moment is predicted, preventive adjustment is performed, and the sight of the driver cannot be affected by the sudden strong light possibly appearing on the opposite side.

The invention discloses a night vision augmented virtual reality head-up display system and method. The system comprises a vehicle driving environment data collection unit, a vehicle calibration data collection unit, a vehicle end information processing unit, a cloud end information processing unit, an experience driving computer and a virtual reality head-up display device. A vehicle-mounted terminal constructs a vehicle surrounding environment 3D model by aggregating information of environment sensing equipment or sensors, positioning equipment and the like installed on a vehicle, and multi-dimensional sensing of the vehicle to the environment is achieved; through the autonomous communication function between the vehicle and the cloud information processing unit and between vehicles, the sensor data sharing function between the vehicle information nodes on the same road section is achieved, and the safety of road traffic is further improved. According to the system, the night vision sensor is additionally arranged, so that the intelligent driving assistance of the vehicle and the environment identification capability of a driver in severe environments such as weak light, strong light, rain, fog, smoke, haze and raised dust are improved, and the driving safety is enhanced.

The invention discloses an electric welding spot binocular vision positioning method and device based on a shape descriptor. The method includes: fitting an external rectangle through camera calibration, image acquisition, image preprocessing and fitting, enabling edges of the rectangle to be parallel to rows and columns of the image respectively, and extracting pixel centroid coordinates of a left image target area and edge length and area of the external rectangle to form a left shape descriptor; in the right image, carrying out three-dimensional matching of shape features based on epipolarconstraint, and calculating three-dimensional space coordinates of the target under a camera coordinate system; carrying out rigid body transformation estimation, carrying out point cloud registrationt based on the ICP principle, and calculating three-dimensional space coordinates of the target in a world coordinate system. Based on connectivity of a target area, an external rectangle is fitted, sub-pixel centroid coordinates and area of the target area of an image and the side length of the external rectangle are extracted as shape descriptors, feature stereo matching is performed, and the stability problem of feature extraction and description under the severe conditions of weak texture, poor illumination conditions, large strong light reflection and the like can be effectively solved.

In a specific light environment for a long time, human eyes can adapt to the specific light environment. Sudden darkness or strong light can affect people's vision and the human eyes need time to readapt to the new light environment. The invention discloses an LED lighting fade-in and fade-out control method. The method relates to technical solutions about the fade-in and fade-out light change ina lighting system when a light is turned on or off, turn-off signal transmission and detection, and turn-off delayed power off. As shown in the Figure 1, by means of the innovative design of a switchcontrol part, a transmission line and a lamp circuit part in an existing LED control system, when a switch in the switch control part is turned on or off, the light is changed gradually so as to the improve the comfort of the human eyes, give full scope to the advantages of LED lighting, and promote LED lighting technology in the lighting market.

Disclosed are methods involving the therapeutic use of human PRG4 (lubricin) protein, to improve vision, to reduce aberrations such as impaired night vision, halos, and glare, to improve the stability of the tear film, and to homogenize the refractive index of the surface of the eye.

The invention discloses an exercise training evaluation system and method based on cooperation of an event camera and a visual camera, is applied to the field of computer vision, and aims to solve the problems that an existing training evaluation system based on an optical camera cannot capture a rapid motion track and limb shape, cannot effectively evaluate the motion quality, cannot effectively evaluate the training quality, and cannot provide effective training guidance. According to the method, continuous human motion events are provided in an event stream form, millisecond-level motion response can be achieved, the method is not affected by the motion blurring effect of a high-speed moving object, a higher dynamic range can be provided, and more effective motion training evaluation can be provided under the scenes of strong light, backlight and violent light and shade change. Through cooperation of the visual camera and the event camera, not only can the accuracy of the rapid action be evaluated, but also standard action teaching and training can be carried out in a visual scene interaction form.

The invention relates to an automatic dimming method based on an astronomical algorithm, and belongs to the technical field of automatic dimming. According to the method, an accurate sunlight incident angle is calculated based on an astronomical algorithm according to different dates, time, longitudes and latitudes, equipment azimuth angles and the like. The display brightness of the LED information display terminal is adaptively adjusted according to different natural environment illumination influences and human vision characteristics by combining measurement parameters of the photosensitive sensor and position data of the LED display terminal. Clear, comfortable and easily-recognized information is provided for observers, and light pollution is reduced. In combination with the installation angle and measurement parameters of the photosensitive sensor, the display brightness is adjusted according to the relation between the photoelectronic imaging and the human eye observation threshold, and the optimal visual brightness adjustment is realized. The problems that the brightness of the LED information issuing terminal is insufficient, the displayed information is not recognized clearly, and the brightness is too high to cause glare, and transient blindness is caused are solved.

The invention relates to an infrared image pick-up device used for a new energy automobile night vision assistant system. The device comprises a main body and an infrared emission device. The main body is provided with a protection mechanism. The infrared emission device is internally provided with an infrared emission mechanism. The infrared emission mechanism comprises a first driving motor, a first driving shaft, a translation block, bar-type teeth, a driven gear, a rotating shaft, a first infrared lamp, a second infrared lamp, and a buffer block. The protection mechanism comprises a protection plate, a rotation unit, and two driving mechanisms. The infrared image pick-up device used for a new energy automobile night vision assistant system performs position switching on the first infrared lamp and the second infrared lamp through the infrared emission mechanism, so a driver can select different infrared irradiation according to road conditions, a display screen clearly displays a front road, and safe driving at night is realized. Not only that, the protection plate is covered on a lens through the protection mechanism, but also a CCD is prevented from being damaged caused by light irradiating the internal of the main body through the lens, and devices in the main body are effectively protected.

The invention relates to an anti-glare lens, comprising a lens and a frame body, wherein the lens comprises a lens part and a combining part which is combined to the periphery of the lens part; the frame body comprises a side wall structure and a hollow groove, wherein the side wall structure is combined with a lens, the hollow groove is surrounded by the side wall structure to expose the lens part, and the wall surface of the side wall structure is provided with at least one anti-glare region; and the side wall structure is provided with a corresponding combining part which is correspondingly combined with the combining part so as to combine the frame body with the lens, therefore, after light penetrates through the lens part, a part of light, refracted from the periphery of the lens part, is homogenized by the anti-glare region so as to reduce an anti-glare situation generated by secondary refraction of the light. The anti-glare lens has the effects of glare prevention, light leakage prevention and homogenization of light leakage, the occurrence of glaring is decreased, the interference of the glaring on vision is reduced and the problem that vision fatigue is easily caused is solved.

The invention provides a street lamp lighting system, and relates to the technical field of street lamp lighting equipment. The street lamp lighting system comprises a controller, a pressure sensor, a floor tile lighting lamp, a landscape street lamp and a lighting street lamp; and the pressure sensor, the floor tile illuminating lamp, the landscape street lamp and the illuminating street lamp are electrically connected with the controller. Meanwhile, an automatic dimming device is further arranged in the system, the illuminating lamp can be gradually lightened when passing of pedestrians or vehicles is sensed, and excessive stimulation of sudden strong light to vision is prevented.

The invention discloses a diffraction type multi-focal intraocular lens with targeted light field distribution. The intraocular lens comprises an optical body (1), a first supporting loop (2) and a second supporting loop (3), the optical body is provided with a phase-modulated diffraction structure optical area, targeted distribution of a light field is achieved, and an asymmetric and personalized trifocal visual range is generated; meanwhile, the far vision and the middle vision are continuous or the middle vision and the near vision are continuous, and even the whole-course vision is continuous; the far focus, the middle focus and the near focus all have achromatic ability, so that better predicted white-light vision can be obtained by implanting the intraocular lens into the eye; the structure can improve the light energy utilization rate; reduce glare and improve the visual comfort.

The embodiment of the invention provides a camera and a light supplementing method. The method is used for efficiently illuminating an effective area and avoiding illumination glare and energy loss in a non-effective monitoring area. The camera comprises an imaging module, a first lighting module and a main control chip, wherein the first lighting module comprises M lighting sub-modules; the imaging module is used for acquiring an image in a vision field range of the camera; the first illumination module is used for supplementing light to a shooting area of the imaging module when the ambient brightness is lower than a first preset threshold value; the main control chip is used for dividing the imaging module into N imaging sub-modules according to the pixel distribution of the image and establishing a mapping relation between the N imaging sub-modules and the M lighting sub-modules; and brightness information of the shooting area of each imaging sub-module is determined, and each illumination sub-module is respectively controlled to carry out light supplement on the shooting area of the corresponding imaging sub-module according to the brightness information of the shooting area of each imaging sub-module and the mapping relation.

Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as haloes and glare. Exemplary ophthalmic lenses can include an optic including a diffractive achromat configured to direct light to a common focus, with individual zones of the diffractive achromat directing light to the common focus in at least two different diffractive orders utilizing at least two different diffractive powers.

The invention provides a lens capable of improving night vision and preventing glare, and a preparation method thereof. The lens comprises a substrate sheet, and a first protective film layer and a second protective film layer which are arranged on a front side and a rear side of the substrate sheet respectively, wherein the first protective film layer is used for preventing glare and improving the light transmission capacity, and the second protective film layer is used for improving the light transmission capability. The lens is advantaged in that the first protective film layer and the second protective film layer are arranged on a surface of the substrate sheet, the light transmission capacity is improved, brightness of the night environment is enhanced, the glare is prevented throughthe first protective film layer, and the night visual observation capacity is improved.

The invention relates to a patrol belt, which belongs to the technical field of illumination, and comprises a belt body and an illumination device arranged on one side of the belt body far away from a human body, the illumination device comprises a plurality of soft lights arranged along the length direction of the belt body, a power supply connected with the soft lights, and a control switch for controlling the soft lights to be turned on and off, a light shielding plate which is arranged obliquely downwards is arranged above the soft light to shield light rays irradiating upwards, and the upper end of the light shielding plate is connected with the waistband body. According to the invention, the light demand required by path finding is separated from the traditional strong light equipment, and the light shielding plate is used for guiding the light irradiation range, so that the light only illuminates the area below the human body, and the problem that the human body cannot see the path under the feet due to the darker light area and the large light and shade difference area is solved; in addition, damage to the vision of a user is avoided, and meanwhile the problem that work of other people is affected due to the fact that the light intensity is too high is solved.

The invention discloses an automobile data recorder capable of adjusting a light inlet sheet based on light intensity. The automobile data recorder comprises a machine shell; a lens cavity with an opening in the right end and communicating with the outside is formed in the machine shell; a middle cavity communicating with the lens cavity is formed in the left end wall of the lens cavity; a switching cavity is formed in the left end wall of the middle cavity; a cleaning cavity is formed in the lower end wall of the switching cavity; a driving cavity is formed in the upper end wall of the machine shell; a control cavity is formed in the left end wall of the driving cavity; the left end wall of the driving cavity is fixedly connected with a driving motor; and a common light inlet plate, a night vision light inlet plate and a strong light filtering plate are arranged in the switching cavity. The positions of the common light inlet plate, the night vision light inlet plate and the strong light filter plate can be switched to adapt to different light intensities, the cleaning cavity is internally provided with a cleaning plate, and the cleaning plate can remove dust from the common lightinlet plate, the night vision light inlet plate and the strong light filter plate.

A driving assistance system and method for a driver including a sensor that senses a state in front of a vehicle corresponding to a driver's field of vision through a vehicle windshield; a detector that photographs the driver's face and detects an illumination distribution of the face or a state of the driver based on a photographed image of the driver; and a processor that determines whether or not the driver's glare occurs based on the state in front of the vehicle sensed by the sensor and the illumination distribution of the face or the state of the driver detected by the detector are disclosed.