78 results about "Light level" patented technology

A system for generating a dark current residual image is configurable to generate a weighted average image by: (i) determining a region-based weight value for each pixel of an input image based upon a light level of a region in which the pixel lies; and (ii) combining the input image with a previous image using the region-based weight values for each pixel of the input image. The system is also configurable to generate a dark current residual image based upon the weighted average image.

The invention discloses a double-barrel low-light telescope and a use method thereof, and relates to the technical field of telescopes, the double-barrel low-light telescope comprises a first lens barrel and a second lens barrel, the first lens barrel and the second lens barrel are rotatably connected through a sleeve assembly, a shaft rod assembly is connected with the sleeve assembly, a locking assembly is arranged on the sleeve assembly, and the locking assembly locks and limits the shaft rod assembly. And the locking assembly is arranged on the shaft rod assembly, and the locking assembly is matched with the sleeve assembly to lock and limit the first lens cone and the second lens cone. According to the invention, the first lens cone, the second lens cone, the sleeve assembly, the shaft rod assembly, the locking assembly and the locking assembly are used in cooperation, and the sleeve assembly, the shaft rod assembly and the locking assembly can be stably installed between the first lens cone and the second lens cone, so that the first lens cone and the second lens cone are used in a combined manner, and the locking assembly is extruded. Therefore, the first lens cone and the second lens cone can be quickly split, and the first lens cone and the second lens cone can be independently used.

The invention provides an autonomous vehicle with a video camera that merges images taken a different light levels by replacing saturated parts of an image with corresponding parts of a lower-light image to stream a video with a dynamic range that extends to include very low-light and very intensely lit parts of a scene. The high dynamic range (HDR) camera streams the HDR video to a HDR system in real time—as the vehicle operates. As pixel values are provided by the camera's image sensors, those values are streamed directly through a pipeline processing operation and on to the HDR system without any requirement to wait and collect entire images, or frames, before using the video information.

The invention particularly discloses an intelligent robot system for roller grinding, and relates to the technical field of steel rolling production equipment maintenance. The system comprises a physical platform layer, a visual perception layer, an execution layer and a user layer, the physical platform layer is an arm-track integrated mobile platform, an anti-explosion power battery pack and a battery management module are arranged in the physical platform layer, and mechanical trigger type flexible safety edge touch anti-collision mechanisms are arranged in front of and behind the physical platform layer. The visual perception layer is integrated with a cross laser positioning assembly, an industrial-grade 3D structured light camera, a wide dynamic starlight-grade two-dimensional camera and a distributed light source array; the execution layer comprises an edge calculation unit, an embedded control module and a floating type tail end main shaft; the user layer is a wired control terminal and provides a visual operation interface, parameter configuration, state monitoring, data storage tracing and role-based authority level-to-level management functions. The operation safety and environment are optimized, the roller grinding quality and the operation efficiency are improved, and powerful support is provided for intelligent and few-person upgrading of the iron and steel industry.

A vision screening device displays visual stimuli and captures image(s) of the eye while the visual stimuli is changing over a period of time. The vision screening device uses the images to determine and monitor refractive error, ambient light level(s), pupil size, and gaze angle as the visual stimuli changes over the time period. Based on the refractive error, a determination of hyperopia and / or presbyopia is made. Based on the gaze angle and / or the pupil size, a confidence metric is determined. Based on the confidence metric and / or the determination, a recommendation for the patient is generated and displayed.

One embodiment provides a method comprising determining multi-dimensional metadata corresponding to an input image, and determining ambient light information indicative of an ambient light level in a surrounding environment of a display device. The multi-dimensional metadata includes a distribution function of pixels in the input image. The method further comprises determining one or more gains to adaptively compensate for the ambient light level in the surrounding environment based on the ambient light information. The method further comprises generating a tone mapping function based on the multi-dimensional metadata and the one or more gains, and applying the tone mapping function to the input image to generate a tone mapped image that is adaptively compensated for the ambient light level in the surrounding environment. The tone mapped image is provided to the display device for presentation.

A plant growing apparatus including a light diffusion and recycling chamber for growing plants. The plant growing apparatus includes interior sides which define a plant growing space. A plurality of light emitting diodes may be mounted directly or indirectly on each interior side, wherein the light emitting diodes may be configured to emit light into the plant growing space such that each side of a plant disposed in the growing space would receive substantially similar light levels from the bottom to the top of the plant. The plant growing apparatus includes a transport and positioning system comprising to allow selective movement of the mobile plant container to engage with or disengage from the growing chamber and to guide movement of the mobile plant container along a pathway from outside the growing chamber to inside the growing chamber.

A system for generating a dark current residual image is configurable to generate a weighted average image by: (i) determining a region-based weight value for each pixel of an input image based upon a light level of a region in which the pixel lies; and (ii) combining the input image with a previous image using the region-based weight values for each pixel of the input image. The system is also configurable to generate a dark current residual image based upon the weighted average image.

Apparatus, methods and systems for lighting control are provided. The apparatus may include a transceiver configured to receive lighting control information from a power source. The apparatus may include lighting control circuitry. The lighting control circuitry may receive a first voltage from the power source. The lighting control circuitry may convert the first voltage into a second voltage. The lighting control circuitry may obtain a light level from the lighting control information. The apparatus may include a connector. The connected may transmit the second voltage and a current corresponding to the light level to a light emitting diode (“LED”) light source. The transceiver, the lighting control circuitry, and the connector may be disposed in a housing. The LED light source may be disposed in a fixture. The lighting control circuitry may be structurally separate from and in electronic communication with the fixture.

The invention discloses a drop impact test device and method for a low-light level night vision device, and the device comprises a drop impact test body (1) which is used for carrying out the drop impact test of the low-light level night vision device, a counterweight hammer seat (2) which is disposed on the drop impact test body (1), a pickup seat (3) which is disposed on the counterweight hammer seat (2), and a vertical transmission guide rail (5) which is disposed on the pickup seat (3). Through the drop impact test body (1), the counterweight hammer seat (2) is connected and supported, through the counterweight hammer seat (2), the low-light-level night vision device is connected and supported, and through the pickup seat (3) and the vertical transmission guide rail (5), the lifting height of the low-light-level night vision device is in a uniform value range. The low-light-level night vision device in a falling impact test state is in a specified height value state under the action of a linear mechanical mechanism, and the technical problems that a falling impact device usually depends on manual operation of a tester and the tester lifts a tested low-light-level night vision device sample and a counterweight hammer to a certain height are solved. Therefore, the drop impact test effect of the tested low-light night vision device sample is improved.

The invention provides a monitoring method and system, a training method, electronic equipment and a computer storage medium, and relates to the technical field of computer vision and image processing. The method comprises the following steps: acquiring an image frame and an event stream of a target scene; preprocessing the image frame and the event stream to obtain a first image feature and a first event feature; aggregating the first event features based on a plurality of preset time windows to generate fused event features; performing cross-modal attention calibration and spatial alignment on the first image feature and the fusion event feature to generate a fusion feature; and reconstructing and outputting an extreme visual image based on the fusion feature and an ambient illumination level estimated according to the image frame and the event stream. The enhanced image with clear details and wider dynamic range is reconstructed under extreme conditions such as extremely dark and overexposure, the perception robustness and target recognition accuracy of the monitoring system under complex illumination are improved, the processing efficiency is considered, and all-weather monitoring can be realized.

The present application relates to a kind of bar light source uniformity adjustment method and system, the method is by reading the driving information of vehicle, driving environment information and real-time light intensity information, in combination with the configuration information of current vehicle light, the best light level of light source is predicted, and light intensity adjustment scheme is generated.On the basis of dynamic monitoring vehicle steering state, system can judge whether it needs side light beam auxiliary, and carries out temporary optimization.In addition, the present application divides bar light source into multiple independent regions, and the light intensity of each region is detected in real time, in combination with environmental information to calculate the required brightness value, to ensure that the lighting effect meets the actual demand.By comparing actual light intensity with target brightness, system can accurately adjust light, optimize the uniformity of overall light source area, and the area with problems is secondarily optimized.

A building automation system includes a ceiling-mounted sensor module comprising a millimeter-wave radar sensor, thermal array sensor, and ambient light sensor. The millimeter-wave radar sensor detects stationary occupants by measuring chest movements corresponding to breathing patterns and generates three-dimensional position coordinates for each detected occupant. A control unit processes sensor data locally and automatically controls a lighting system, window covering system, climate control system, and audio system based on occupancy patterns and environmental conditions. The control unit adjusts lighting brightness and color temperature according to a solar schedule determined from GPS coordinates and time of day, and prevents lighting activation when ambient light levels exceed a predetermined threshold despite detected occupancy. The system operates independently during network disruptions through local data processing within the residential structure.

The invention provides a vehicle-mounted projection method and device, a vehicle and a storage medium, and relates to the technical field of automobile lighting. The method comprises the following steps: controlling a projection assembly to emit a projection light signal with a preset polarization characteristic; a first illuminance value and a second illuminance value representing the ambient light level are obtained, the first illuminance value is obtained by measuring the ambient light signal, the second illuminance value is obtained by measuring the ambient light signal based on an ambient light sensor with a polarization filter, and the polarization filter only allows light components with preset polarization characteristics to pass through; calculating environment illuminance information according to the first illuminance value and the second illuminance value; therefore, the emergent light power of the projection light signal is adjusted. By comparing the light intensity signals before and after filtering, the real ambient illuminance can be accurately separated, so that the projection light power is adjusted based on the real brightness information, the problems of out-of-control brightness and dazzle light caused by scattered light interference are effectively avoided, and the projection definition and the driving safety in severe weather are guaranteed.

1. Name of the designed product: binocular low-light night vision device (portable). 2. Use of the designed product: the designed product is used for night vision device for observation at night and in low light. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The invention provides a space multiplexing light quantum interference device and an adjusting method, the light quantum interference device comprises N + 1 levels of interference assemblies, each level of interference assembly is suitable for receiving M beams of parametric light, the parametric light is pulsed light, each parametric light comprises a plurality of light pulses transmitted according to a time sequence, each stage of interference assembly is also suitable for enabling M light pulses received at the same moment to interfere to obtain M beams of interference light; the system comprises an N-stage optical fiber delay array, the ith-stage optical fiber delay array in the N-stage optical fiber delay array is arranged between the ith-stage interference assembly and the (i + 1) th-stage interference assembly, each stage of optical fiber delay array comprises M delay rings, the M delay rings delay the received M beams of interference light in a one-to-one correspondence mode, and the delay amounts of the M delay rings are different; wherein M beams of delayed interference light output by the ith-level optical fiber delay array serve as M beams of parametric light input to the (i + 1) th-level interference assembly, i is larger than or equal to 1 and smaller than or equal to N, and M is larger than 1.

This invention belongs to the field of greenhouse technology, specifically an intelligent greenhouse, comprising a greenhouse body, a shading cloth, and a wiping roller. A shell is fixedly installed on the top of the greenhouse body, and a winding assembly is installed inside the shell. One end of the shading cloth is connected to the winding assembly, allowing it to be wound or released. The wiping roller is fixed to the end of the shading cloth furthest from the winding assembly. When the winding assembly releases the shading cloth, the wiping roller, under its own weight, pulls the shading cloth out of the shell, causing it to unfold and cover the top outer surface of the greenhouse body for shading. This invention can automatically adjust the unfolding and winding state of the shading cloth according to changes in external light intensity, effectively preventing damage to crops from excessive sunlight, ensuring suitable temperature and light levels inside the greenhouse, and improving crop growth quality. Simultaneously, it cleans dust from the greenhouse surface, helping to maintain high light transmittance on the roof.

A solid-state lighting fixture assembly having a lighting fixture with a socket configured to receive a plug associated with one or more accessories to allow for easy in-field mounting of accessories, e.g., controls, onto installed lighting fixtures. The socket may be internally electrically connected to an auxiliary power output of a driver and / or to a battery power pack within the lighting fixture assembly, thereby providing direct-current voltage power for the accessory and, also, allowing for signal transmission to and from the accessory. Each accessory includes one or more sensors and communication components to provide the connected lighting fixture assembly with specific capabilities including, but not limited to, motion detection, ambient light level detection, ambient temperature measurement and wireless communications. The wireless communication can also be used to control one or a group of lighting fixtures and transmit sensor data associated with, for example, monitoring space utilization and asset tracking.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

The utility model relates to the field of single-chip microcomputers, in particular to an airport navigational light live simulation circuit, which comprises a master control module, a current display module, a light level display module, a light control module and a voice control module. The current display module is electrically connected with the main control module, and the current display module is used for receiving and displaying current information sent by the main control module; the optical level display module is electrically connected with the main control module, and the optical level display module is used for receiving and displaying an optical level signal sent by the main control module; the light control module is electrically connected with the main control module, and the light control module is used for controlling light; the voice control module is electrically connected with the main control module, and the voice control module is used for controlling light through voice. According to the utility model, the problems of high airport light maintenance difficulty and low teaching training efficiency in the prior art are solved, and the airport light maintenance and teaching training efficiency is improved.

A sanitization system for a space includes an ultraviolet (UV) light source configured to emit UV light towards a UV light zone at a UV light level, a motion sensor device configured to sense movements of one or more individuals, and a controller. The controller is configured to determine, based on the movements of the one or more individuals, an exposure parameter value for each of the one or more individuals in the UV light zone, determine that the value of the exposure parameter determined for at least one of the one or more individuals exceeds a threshold value, and, responsive to determining that the value of the exposure parameter determined for the at least one of the one or more individuals exceeds the threshold value, cause the UV light source to reduce the UV light level of the UV light emitted towards the UV light zone.

The invention relates to a method for controlling a pixelated light source for a motor vehicle. The method makes it possible to prevent thermal runaway and premature ageing of the elementary pixels of the source independently of the projected light levels. By dynamically adapting the electric current intensities at the elementary light sources, the control method provides protection for the semiconductor junctions of the pixels of the pixelated light source in order to increase their lifespan and avoid visible defects in a beam projected onto the road due to thermal runaway or premature ageing of the semiconductor junctions.

An apparatus for measuring a light level in a fiber-optic cable using a mobile device is disclosed. The apparatus includes an adapter that has a sensor end and a connector. The connector is configured to couple to the fiber-optic cable to be tested. The sensor end includes a gasket for blocking light between the adapter and the mobile device. The apparatus further includes an arm coupled to the adapter. The adapter can be slid between a proximal end and a distal end of the arm. The apparatus also includes an attachment base connected to the arm. The attachment base can hold a back surface of the mobile device.

Optoelectronic sensor (10) for measuring the distance of an object (18) in a detection area (16) using a time-of-flight method, wherein the sensor (10) comprises a light transmitter (12) for emitting a light signal (14) into the detection area (16), a light receiver (22) with a first plurality of avalanche photodiodes (24) in Geiger mode for detecting received light (20) from the detection area (16), a second plurality of time-of-flight measuring units (28) for determining individual light times between the emission of a light signal (14) and the triggering of a detection event in an avalanche photodiode (24), and a control and evaluation unit (32) configured to collect individual light times in a histogram, to locate a useful light signal (44) in the histogram using a threshold (38), and to determine a distance value to the object (18) from the useful light signal (44).wherein the control and evaluation unit (32) is further configured to first estimate an ambient light level from the histogram and then, based on the ambient light level, to set the threshold (38) such that it lies above an expected exponentially decreasing number of noise and ambient light events with a safety margin, characterized in that the control and evaluation unit (32) maintains a first lookup table which assigns an ambient light level to a summed number of detection events and that the first lookup table is trained prior to the distance measurement by repeatedly exposing the light receiver (22) to a defined ambient light level with the light transmitter (12) inactive and determining the respective sum of the first bins of a histogram generated thereby.

A sensor for sensing environmental characteristics of a space may include a visible light sensing circuit for recording an image of the space and a control circuit responsive to the visible light sensing circuit. The control circuit may detect an occupancy or vacancy condition in the space in response to the visible light sensing circuit, and measure a light level in the space in response to the visible light sensing circuit. The control circuit may also include a low-energy occupancy sensing circuit for detecting an occupancy condition in the space. The control circuit may disable the visible light sensing circuit when the space is vacant. The control circuit may detect an occupancy condition in the space in response to the low-energy occupancy sensing circuit and subsequently enable the visible light sensing circuit. The visible light sensor may be configured in a way that protects the privacy of the occupants of the space.

This invention discloses a display device and its driving method and device. By determining the period duration of a target signal based on the ambient light level of the environment where the display device is located, the period duration can be adjusted according to different ambient light levels, which helps to improve screen flicker. By determining the signal parameters of the target signal corresponding to the display area under the target display screen based on the content type of different display areas, the target signal is generated based on the period duration and the signal parameters corresponding to different display areas to control the reset of the driving module. The signal parameters corresponding to display areas with different content types are not completely identical. This allows the first reset module to reset either the first or second end of the driving module according to the content type of the display area, ensuring the improvement effect on flicker in display areas with different content types.

Devices and methods are described for outputting video content for display on a display. At least one processor displays a first video content on the display, receives a second video content to display, obtains a first luminance value for the first video content, extracts a second luminance value from the second video content, adjusts a luminance of a frame of the second video content based on the first and second luminance values and outputs the frame of the second video content for display on the display. The video content can comprise frames and a luminance value can be equal to an average frame light level for the most recent L frames of the corresponding video content. In case a luminance value is unavailable, a Maximum Frame Average Light Levels of the first video content and the second video content can be used instead.

Approaches for controlling supply of power to a load in an environment based on ambient light sensing and dynamic thresholding include, based on an ambient light level in the environment decreasing to a turn-on threshold light level, controlling a switch of an electrical load controller to couple the supply of electrical power to the lighting load, sensing a current ambient light level in the environment after lapse of a predetermined amount of time subsequent to controlling the switch to couple the supply of electrical power to the lighting load, and adjusting a turn-off threshold light level using the current ambient light level.

The invention relates to an image processing method and apparatus, a device, a medium and a product. The method comprises the steps of obtaining a to-be-processed image; determining a light level type of a target area in the to-be-processed image according to the brightness data of the to-be-processed image; determining a target mapping relation according to the light bit type and the brightness data; wherein the target mapping relation is used for mapping the brightness in the first dynamic range to the brightness in the second dynamic range, and the first dynamic range is larger than the second dynamic range; according to the target mapping relation, performing brightness mapping processing on the to-be-processed image to obtain a brightness mapping image; and performing bit width compression on the brightness mapping image to obtain a target image. According to the invention, the visual effect of the face area can be improved.

The utility model belongs to the field of cercaria escape, particularly relates to a schistosome cercaria escape device, and aims to solve the problems that when oncomelania escape is carried out in the prior art, flowing of water flow in a real environment cannot be well simulated, an angle-adjustable illumination system cannot be arranged, the cercaria escape effect is poor, experimental equipment cannot be sterilized after an experiment is finished, and the working efficiency is low. In order to solve the problem that cercaria possibly remains in a box body and causes pollution, the utility model provides the following scheme: the device comprises a box body, supporting legs are fixedly connected to four corners of the bottom of the box body, a controller is arranged on the box body, a heater and a temperature sensor are arranged in the box body, and one side of the box body is fixedly communicated with a water inlet pipe; the top of the box body is open, a fixing plate is fixedly connected to the interior of the box body through bolts, natural water flow and illumination in different time periods can be well simulated through the disturbance mechanism and the adjusting mechanism, and the cercaria releasing process is accelerated.