143 results about "Light level" patented technology

The invention relates to the technical field of image processing, in particular to a low-light and infrared image fused night vision imaging method and system. According to the method, multi-source data collaboration is realized by constructing a dual-band polarization feature cube, a degradation rule of fog scattering on low-light texture is accurately quantified, and a scattering invariance enhanced image is generated; based on fog concentration gradient dynamic partitioning, low-light details and infrared contours are fused in a low-concentration area, polarization state penetrating dense fog is recombined in a high-concentration area, finally, a night vision image with high definition, high scattering resistance and scene adaptability is output, and the identification capacity and monitoring reliability of fog night road targets are improved.

The invention discloses a self-adaptive power generation optimization control system for a greenhouse photovoltaic ceiling, relates to the technical field of ceiling power generation control, and is used for solving the problem that photosynthetic efficiency and yield are affected due to the fact that crops are in a state of insufficient illumination or excessive illumination in a growth stage. The method comprises the following steps: calculating illumination deviation by combining an illumination demand library and an illumination sensor; judging an illumination level according to deviation and photosynthetic response characteristics; collecting a leaf potential and a transpiration rate to calculate photosynthetic efficiency; comprehensively judging whether to adjust the angle of a photovoltaic panel, outputting an execution instruction, setting different control mechanisms, and executing a balance optimization strategy when the power generation efficiency is high. And when the power generation efficiency is low, an intelligent switching strategy is executed, the productivity is preferentially improved, the crop illumination tolerance is considered, the angle is dynamically adjusted, collaborative optimization of agriculture and energy is realized, and the adaptability and the operation efficiency of the system are improved.

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.

To enable obtaining a smoke sensor that can prevent erroneous sensing of smoke.SOLUTION: A smoke sensor (100) comprises: a smoke sensing part (50) for sensing smoke generated in a monitoring area to output a smoke sensing level indicating concentration of the sensed smoke; and a state monitoring part (20) for monitoring a state of an inner face of a flow channel (41) for allowing air in the monitoring area to pass through the smoke sensing part (50), or an object face (31) as a face of an interior of the smoke sensing part (50). The state monitoring part (20) has: a monitoring light-emitting part (21) for emitting light toward the object face (31); and a monitoring light-receiving part (22) for receiving reflected light of light emitted from the monitoring light-emitting part (21), from the object face (31) to output a light-receiving level indicating intensity of the received light as a monitoring light level.SELECTED DRAWING: Figure 2

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.

A control method includes encircling a patient appendage with a pressurizable cuff pressurized via a valve, and directing emitted light through a patient appendage to a light sensor. A sensed plethysmogram signal is generated based on the received light level, and the valve is controlled via a closed feedback loop responsive to an error value computed as the difference between the sensed plethysmogram signal and a calibrated setpoint value. An unperturbed error value characteristic is recorded through a first time window, and a random vector perturbation in the closed-loop control space is generated. A perturbed error value characteristic is recorded through a second time window while temporarily adjusting closed-loop control parameters based on the random vector perturbation. Baseline closed-loop control parameters are updated in response to the unperturbed error value characteristic exceeding the perturbed error value characteristic.

The application discloses a kind of fast low-light image enhancement methods based on global frequency domain filtering, it includes the following steps: S1, the image training set of known label is constructed and low-light image enhancement network model;S2, using image training set is trained to low-light image enhancement network model, obtains the low-light image enhancement network model after training;S3, using the low-light image enhancement network model after training is enhanced to low-light image.The application provides a kind of efficient, light level low-light image enhancement network model, can give consideration to the enhancement speed and enhancement effect of low-light 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.

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.

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.

The utility model belongs to the technical field of lamps, and discloses a soft light night lamp which comprises a shell, an induction module, a light source plate and a diffusion plate, the induction module is arranged on the upper portion of the front face of the shell, the light source plate is arranged in the shell, and the diffusion plate is arranged at the bottom of the shell; a support is arranged in the shell, and the light source plate is arranged on the bottom face of the support to form downward light emitting. The diffusion plate is arranged at the bottom of the shell, when the sensing module senses human body characteristics, the light source plate is controlled to emit light downwards, the emergent light of the light source plate is emitted by taking the diffusion plate as a medium, so that the emergent light of the soft light night lamp is softer, and the light is prevented from being horizontally emitted to directly irradiate human eyes; and the stimulation to human eyes caused by glare is also avoided.

Aspects of the subject technology may provide local environmental input sensing for an electronic device. Local environment input sensing may include obtaining a local lighting condition estimate for one or more local portions of a physical environment. The local lighting condition may include an ambient light level and / or a light direction of a directional light source. The one or more local portions of the physical environment may be determined based on an identification of a salient region of the physical environment to a user of the electronic device.

An electronic device may include a lens module having a tunable lens. The tunable lens may operate in multiple modes, such as a normal mode, a presbyopia mitigation mode, a near focus mode, and a negative power boosting mode. During operation, the electronic device may acquire data and adjust the tunable lens based on the acquired data. The tunable lens may switch from the normal mode to the presbyopia mitigation mode in response to determining that a nearby object is being viewed through the lens module. The tunable lens may switch from the normal mode to the negative power boosting mode in response to a low ambient light level and / or a high eyestrain level. The tunable lens can switch between modes over a transition period. When the tunable lens changes mode, the output device may notify the user.

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 wall-mounted keypad may include a light detector circuit located inside the keypad that is configured to measure an ambient light level in a space. The light detector circuit may receive ambient light through an aperture that is hidden from view by the keypad. The keypad may include a reflector for directing ambient light onto the light detector circuit. The keypad may include an enclosure that houses the light detector circuit. The enclosure may define a recess that exposes at least a portion of the light detector circuit. The enclosure may include a reflector that may focus ambient light received through the aperture onto the light detector circuit. The keypad may include a control circuit that may be configured to illuminate the indicia of respective buttons of the control device in response to actuations of the one or more buttons, in accordance with the measured ambient light level.

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.

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.

A method of sensing an ambient light level in an electronic device includes sensing a combined light level of ambient light and light from a display, integrating it to determine an integrated light level, determining an integrated display light level, and using the integrated display light level to compensate the integrated light level to determine the ambient light level. The device modulates the display between first and second brightness levels, and determining the integrated display light level includes sensing a combination of light from the display and ambient light when at each of the first and second brightness levels, determining a difference, and applying a calibration value to the difference to determine the integrated display light level.

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 relates to the technical field of lighting environmental protection and energy conservation, and discloses an LED intelligent dimming control method and system. The method comprises the steps of collecting ambient light intensity and user activity state data in real time, dynamically adjusting the brightness of an LED lamp through a PID control algorithm, and performing intelligent dimming control based on a Z-Wave protocol. The technical problems that in the prior art, dimming control depends on timing or simple sensor triggering, and especially under the condition that the user activity state changes frequently, accurate dimming control and global energy-saving optimization cannot be achieved are solved. Due to the fact that the user activity score, the environment illumination and the brightness error feedback mechanism are comprehensively analyzed, the PID control algorithm and the dimming parameters are intelligently adjusted, the purpose of dynamically adjusting the brightness of the LED lamp is achieved, the problems of excessive illumination and energy efficiency waste are avoided, and the energy efficiency is improved.

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.