23 results about "Darkness" patented technology

The invention provides a light environment adaptive HUD adjusting method based on a man-machine flight mission, and belongs to the technical field of flight display control. Light intensity, color temperature and reflectivity data outside a cabin are collected, and eye movement signals, electroencephalogram signals and heart rate variability signals of a pilot are synchronously obtained; after registration, constructing a synchronous time sequence data set containing the light environment and the physiological state, and based on external light parameters, utilizing a gradient lifting decision tree model to identify the current light environment and obtaining a brightness reference interval; according to the invention, the HUD brightness and contrast are dynamically calculated and compensated in advance through real-time acquisition of external light parameters and a classification result of a light environment recognition model, so that the HUD can maintain clear symbols and stable contrast under various light conditions such as cloud crossing, backlight, strong reflection and night voyage; the problem of over-brightness or over-darkness caused by adjustment lag of a traditional fixed brightness curve is avoided, and information readability in a flight task is improved.

To provide a projection device for a vehicle capable of displaying an image easily visible for a viewer on a road surface by using darkness of a shadow even under a bright environment in the daytime.SOLUTION: The device includes a projection part 2 for irradiating a road surface R with first irradiation light L1 for displaying a first image M1, a detection part 2 for detecting brightness of a surrounding environment of a vehicle C, and a control part 4 for controlling the projection part 2. The control unit 4 performs a brightness determination process of determining whether or not the brightness detected by the detection unit 2 is equal to or higher than a predetermined brightness, and an image position determination process of determining whether or not at least a part of the first image M1 displayed on the road surface R by the projection unit 2 is located outside the shadow region RF. And image adjustment processing for adjusting the first emission light M1 so that the whole of the first image L1 is positioned inside the shadow area RF when it is determined by the image position determination processing that the first emission light LA is positioned outside the shadow area RF.SELECTED DRAWING: Figure 1

1. The name of the design product: helmet night vision device. 2. The use of the design product: for night work in low light or no light environment, based on the high sensitivity imaging capability of short wave infrared band, the user can realize the detection, identification and tracking of target in darkness, smoke or complex background, thereby significantly improving the situation awareness and operation safety; typical applications include military operations, border patrol, law enforcement monitoring, search and rescue tasks, night navigation and outdoor tactical training scenes. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application belongs to the field of display screen, and provides a light and dark adjusting method and system for mobile phone display screen, which comprises the following steps: pre-processing input LDR video frames by a fast guided filter to remove noise and artifacts generated by compression or sensors; expanding the brightness range of the input LDR video frames based on a global operator of mid-gray value mapping; while expanding the brightness range of the LDR video frames, iteratively removing false contours in the smooth transition area in the LDR video frames by a minimization algorithm based on iterative projection to a convex set; analyzing the LDR video frames without artifacts and their brightness channels to detect highlights and generate an expansion map, analyzing the expansion map and marking the highlight area, and fusing original brightness details by using a guided filter; and re-distributing the brightness of the LDR video frames after brightness expansion to the RGB color channels by using a Mantiuk formula; the application can realize good display effect when converting LDR to HDR.

1. The name of the design product: bottle for cosmetics. 2. The use of the design product: the design product is mainly used for storing and packaging liquid cosmetics. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 front view. 5. Design 1 is designated as the basic design. 6. Other circumstances that need to be explained: the lightness and darkness of the color shown on the surface of the product in each view are used to represent the three-dimensional surface shape, not the pattern of the design.

The invention relates to a multilayer optical disk with a plurality of polygonal meshes, comprising a substrate, a plurality of polygonal meshes, a multilayer film, and two dirt- and water-protection layers. The polygonal meshes are formed on one side of the substrate by alternating stacking of a plurality of materials with a high refractive index and a plurality of materials with a low refractive index. The multilayer film is formed on the side of the substrate facing away from the polygonal meshes by alternating stacking of a plurality of materials with a high refractive index and a plurality of materials with a low refractive index. The two dirt- and water-protection layers are applied to both sides of the substrate to cover the polygonal meshes and the multilayer film.This allows the invention to effectively resist glare and block scattered light, and it exhibits a light compensation effect, thus reducing the time required for the eyes to adapt to brightness and darkness. Furthermore, the invention can more effectively block ultraviolet, violet, blue, and near-infrared light while maintaining high transmittance of visible light.

The automatic light changing system comprises a filter with a liquid crystal box assembly (LCD) and a darkness control system, the control system comprising: a micro control unit (MCU); a detection unit, a parameter setting unit and a power supply control circuit electrically connected therewith, the detection unit detecting light signals under arc striking and arc extinguishing operations and converting the light signals into electrical signals and sending the electrical signals to the MCU; the setting unit sending working parameters to the MCU; the MCU generating an output control signal based on the electrical signals and the working parameters and sending the output control signal to the control circuit; and a driving circuit electrically connected to the control circuit downstream of the control circuit, the control circuit providing a control voltage required for driving the LCD to the driving circuit based on the control signal; the driving circuit driving the LCD to change between bright and dark states, within a time delay range after the arc extinguishing operation, a continuous darkness curve of the LCD is distributed in a time sequence as follows: a first stage with constant darkness; a second stage with decreasing darkness and rate of change; and a third stage with linearly distributed darkness. The application also relates to a welding mask comprising the automatic light changing system and a method for controlling darkness of the welding mask.

The application relates to a display screen light and dark line correction method and device, electronic equipment and a storage medium. The method performs self-calibration between a lamp plate and a camera on an external parameter conversion matrix according to first positions and second positions of a plurality of first lamp beads on a single lamp plate. The position of a second lamp bead at the edge of two adjacent lamp plates is obtained according to the self-calibrated external parameter conversion matrix. Since the position information of the plurality of lamp beads on the single lamp plate is used to obtain the external parameter conversion matrix, the denoising effect can be achieved, and the position error of the second lamp bead is reduced. The joint seam spacing at the edge of the two adjacent lamp plates is obtained according to the position of the second lamp bead, and the detection error of the joint seam spacing is reduced. The display screen is corrected according to the joint seam spacing, and the accuracy of the light and dark line correction is improved.

The invention discloses a backlight adjustment method for intelligently switching a dynamic mode and a static mode, and the method comprises the steps: calculating the average brightness-to-darkness ratio of an image in real time, and monitoring the change state of the average brightness-to-darkness ratio: when the average brightness-to-darkness ratio continuously changes, adopting a dynamic backlight mode, and outputting a backlight value according to a preset mapping relation so as to ensure that the energy efficiency is compliant; and when the average brightness ratio is stable and exceeds the set time, automatically switching to a static backlight mode, allowing a user to manually adjust the brightness, and recalculating the backlight parameters by the system according to the brightness. When the two modes are switched, the backlight brightness gradually changes to a target value in a smooth transition mode. The problems that in a traditional dynamic backlight technology, pictures flicker, and manual dimming cannot be achieved are effectively solved, and on the premise that the energy efficiency standard is not sacrificed, the visual comfort degree of display equipment and the user control flexibility are remarkably improved.

This application relates to the fields of computer and mechanical control technology, and discloses an image processing method, apparatus, readable medium, and device. The method includes: performing a negative-like processing on an image to be processed to obtain a processed image; fusing the image to be processed and the processed image to obtain a target processed image; and controlling a laser to perform laser processing according to the target processed image. The technical solution of this application's embodiments, by performing a negative-like processing on the image to be processed, increases the brightness of areas in the processed image that correspond to dark areas in the same location as those in the image to be processed. This allows for better neutralization of dark areas during subsequent image fusion between the processed and the image to be processed, preventing large areas of darkness in the generated target processed image. This effectively avoids problems such as material scorching during laser processing, thereby improving the laser processing effect.

The present application relates to the technical field of plant growth and development regulation, and relates to a cultivation method for normal flowering and fruiting of winter (semi-winter) plants without low-temperature vernalization. The present application provides a cultivation method for normal flowering and fruiting of winter (semi-winter) plants without low-temperature vernalization, comprising the following steps: (1) sterilization and germination: after sterilization treatment, the plant seeds are germinated and cultivated in darkness to obtain plant seedlings; (2) vernalization-free cultivation: the plant seedlings are irradiated with the following light conditions in the vernalization-free cultivation, the light conditions comprise two or more of 400-500 nm, 600-700 nm and 720-750 nm, the light period adopts 16-22 h light / 2-8 h darkness, the light period temperature ranges from 20-28 DEG C, and the dark period temperature ranges from 18-26 DEG C. The present application actively replaces the sustained low temperature in the flowering induction process of winter plants by using light, a non-temperature environmental factor, thereby realizing exemption from the low-temperature vernalization stage.

The invention discloses an LED lamp arrangement method of a side-entry backlight module and the backlight module thereof, and the method comprises the following steps: (1) measuring to obtain the width L of a visible area of the backlight module, and determining the number N of LED lamps needing to be arranged; (2) calculating the lamp spacing P according to a formula P = L / (N + 0.25), and calculating according to P = L / 2 when N is equal to 1; and (3) arranging the LED lamps, centering the whole group of LED lamps in an area below the visible area, and finishing arrangement according to the arrangement rule of even-number lamps or odd-number lamps. By means of the method, the design efficiency can be greatly improved, the light-emitting angle dark area of the LED lamp is uniform, lattice points of the light guide plate can be conveniently and easily arranged and debugged, and therefore the visual effect that the brightness and the darkness of a product are not uniform is improved.

The present disclosure relates to a system (200) and a method (600) for binarizing one or more images using one or more vision transformers (206a, 206b). The system (200) includes an encoder (204) configured to receive multimodal inputs including an original image and a darkness image corresponding to the original image from an input module (202), discretely extract, by vision transformers (206a, 206b), modality-specific features from each of the original image and the darkness image, and aggregate augmenting features among the modality-specific features by determining a weighted sum of the modality-specific features of each of the original image and the darkness image. The system (200) includes a decoder (208) operatively connected to the encoder (204), and configured to reconstruct a binarized output image corresponding to the original image by refining the one or more aggregated features.

This invention discloses a frequency-domain illumination prior-driven unsupervised low-light video enhancement method, system, and storage medium for monitoring tunnel boring machine (TBM) slag outlets. The method utilizes a noise suppression module to achieve composite noise suppression and basic restoration of the low-light image. A frequency-domain illumination prior estimation module performs two-dimensional Haar wavelet decomposition on the restored image, combining channel-spatial attention-weighted high and low frequency sub-bands and fusing them to generate frequency-domain illumination prior features. The reflection component is accurately reconstructed using a cross-attention transformer unit in the reflection component reconstruction module. A global exponential enhancement factor is generated using an illumination enhancement coefficient module to obtain the enhanced image. Unsupervised end-to-end training of the network is achieved through gamma transform branching and multi-dimensional loss constraints. This method effectively alleviates the problems of overall darkness, detail obscuration, and severe noise in TBM slag outlet monitoring images without increasing the burden of continuous on-site lighting, resulting in enhanced videos with balanced brightness, clear details, and controlled overexposure.

The present application belongs to the technical field of forest pest control, and discloses a kind of efficient weak light seeking insect light trapping method, which opens strong light inhibitory behavior when weak light seeking insects seek for pair at normal field normal photoperiod;After 30 minutes, when the night sky is dark enough, the strong light is turned off, and the darkness stimulates the behavior;At the same time, weak ultraviolet light is turned on to stimulate the phototaxis behavior of weak light seeking insects, realizing efficient light trapping of weak light seeking insects represented by eucalyptus moth, and solving the problem of efficient light trapping and killing of weak light seeking insects.

This invention discloses a stacked LED directional lighting system specifically designed for laying hen houses, featuring facade lighting that differs from the horizontal lighting focus of ordinary lighting systems. The system comprises double-U directional lights, a directional rotation adjustment mechanism, and spaced T-shaped conductors. The lights incorporate a symmetrical double-U-shaped reflective light control structure and a double-LED plate. Utilizing a customized light distribution curve, it avoids the near-brightness and far-darkness defect, achieving reasonable light intensity supplementation between near and far cages, forming a light distribution distribution with raised sides and a recessed center. The directional rotation mechanism can adjust and lock the light fixture angle, ensuring uniform light output from the multi-lamp array. Combined with high and low-position suspension, it achieves uniform lighting on both sides of narrow passageways without adding lights, increasing costs, or increasing energy consumption. The system is adjustable in size, offers optional lampshades, is fully sealed for dust and moisture protection, and its lighting parameters meet livestock and poultry farming environmental standards. It can reduce stress on laying hens, improve egg production performance, is energy-efficient, easy to operate and maintain, and has significant industrialization and patent application value.

The invention relates to an active infrared vision fusion VR positioning method in an under-illumination environment, and the method comprises the steps: configuring an active infrared illumination unit on a head-mounted device, controlling the active infrared illumination unit to emit infrared light to the environment in a preset illumination mode, and collecting an infrared image; synchronously acquiring measurement data of the inertial measurement unit; performing preprocessing and feature extraction and tracking on the infrared image to obtain visual features; carrying out pre-integration on the measurement data to obtain IMU pre-integration data; visual features and IMU pre-integration data are fused, and state estimation and map construction are carried out through a multi-sensor tight coupling optimization algorithm; outputting a six-degree-of-freedom pose; and based on a state estimation result or visual feature extraction quality, dynamically adjusting illumination parameters, and repeating the steps. The fundamental problem that a traditional visual scheme fails in the dark is thoroughly solved, stable and continuous six-degree-of-freedom pose output is achieved, meanwhile, the optimal balance of power consumption and performance is achieved, mutual interference among multiple devices is effectively restrained, and the precision and robustness of the system are greatly improved.

The present invention provides a lighting device that can illuminate an object by adjusting the brightness and darkness with a desired resolution. [Solution] The lighting device comprises a control unit that determines a control value corresponding to a dimming value by referring to the correspondence between a dimming value for adjusting the brightness of light emitted from a light source and a control value corresponding to the dimming value, and a drive unit that generates a drive signal based on the control value determined by the control unit and supplies it to the light source. The correspondence includes a first correspondence between a dimming value having a first setting resolution and a control value associated with the dimming value having the first setting resolution, and a second correspondence between a dimming value having a second setting resolution different from the first setting resolution and a control value associated with the dimming value having the second setting resolution, wherein the second correspondence is generated based on the first correspondence, and the control unit selects either the first correspondence or the second correspondence to determine the control value corresponding to the dimming value.

The application provides a subway station partition lighting control method and system, and relates to the technical field of subway lighting, and comprises the following steps: obtaining illumination demand data according to three-dimensional building model data, functional area division data and passenger flow data; obtaining initial illumination intensity distribution data by simulating original lamp arrangement scheme, three-dimensional building model data and the illumination demand data; obtaining illumination intensity superposition matrix by processing the initial illumination intensity distribution data; adjusting the illumination adjustment data of the reflection area according to the optical characteristic data and the passenger flow data; obtaining the area optical interaction matrix by processing the illumination adjustment data, the illumination intensity superposition matrix and the illumination demand data; and obtaining the real-time control strategy according to the area optical interaction matrix. The application solves the problems of uneven light, local over-brightness or over-darkness caused by complex building structures by dynamically analyzing the illumination demand and the actual illumination distribution of each area.

This invention relates to the field of smart home technology, specifically to a built-in ultra-narrow recognition gate system based on facial recognition. The system includes a proximity detection module to locate facial regions and generate an image grayscale matrix; a contour extraction module to identify boundary transition positions and generate a contour curvature sequence; a gradient filtering module to compare edge changes and generate a curvature gradient identity list; a proportion construction module to identify facial features and establish proportional relationships to generate a facial matching list; and a gate control execution module to compare authorization and control the gate's opening and closing to generate the final access recognition result. This invention uses entrance proximity signals and lighting brightness as the basis for environmental perception, generating a stable facial grayscale matrix that has undergone brightness and darkness verification. It extracts the curvature and transition continuity of the jawline, cheekbones, and forehead contours to complete multi-region identity screening. Combined with the proportional features of eye spacing, chin verticality, and mouth horizontality, it forms a dual-constraint identity confirmation basis of curvature and proportion, improving the reliability of entrance recognition and the stability of access control in complex environments.

Provided is a heat pump external unit comprising: a housing and within the housing an evaporator, the housing including an air inlet and an exhaust outlet, a fan to move air from the inlet through / over the evaporator and out through the exhaust outlet of the housing, the air inlet being provided in a rear or side face of the housing, and the exhaust outlet being provided in an upper or front face of the housing, the exhaust outlet having a generally circular cover grille, the fan being located behind the cover grille and including a motor and / or bearing substantially at the centre of the grille, the heat pump external unit including a connection to a remote unit including a control panel and information display, the heat pump external unit including control logic for controlling the fan and a compressor connected to the evaporator, the control logic being arranged to operate with the control panel to display information on the operation of the unit and to set one or more parameters relating thereto, the heat pump external unit further comprising a status display indicator comprising a plurality of addressable illumination elements overlaid by a diffuser and / or a printed image or logo, wherein the diffuser and / or the image at least partially obscures or blurs the individual addressable illumination elements, wherein the addressable elements can be controlled to illuminate the diffuser and / or printed image or logo to render the exhaust outlet visible in darkness, wherein the addressable illumination elements include at least one element of selectable colour and / or wherein the plurality of addressable illumination elements include elements of multiple different colours and wherein intensity of at least some of the plurality of addressable illumination elements is variable in multiple steps or substantially continuously, wherein the control logic is controllable to send one of a plurality of static patterns or animation sequences to control the addressable illumination elements based on both a status of operation of the heat pump external unit and based on one or more stored configuration parameters so that different states of operation of the device are discernible from observation of the collective arrangement of the addressable illumination elements