79 results about "Darkness" patented technology

The present invention relates to a positioning and inspection control method for a multi-sensor-fusion pipeline unmanned aerial vehicle. The method comprises: acquiring a video stream image frame of real-time pipeline inspection by means of a binocular camera; determining the darkness degree of the image frame, and if the image frame does not meet a brightness requirement, performing real-time low-light enhancement on the image frame; determining the blur degree of the image frame, and if the image is blurry, performing real-time deblurring processing on the image frame; performing pose calculation on the image frame; and outputting positioning data and pose data of an unmanned aerial vehicle at a real-time location point, and a pipeline inspection image. The present invention realizes safe and effective positioning of an unmanned aerial vehicle in a dark environment where a GPS signal is lost, and realizes safe and normal inspection of the unmanned aerial vehicle in environments such as drainage channels and pipelines on the basis of the positioning of the unmanned aerial vehicle.

The invention relates to a method for improving the diapause egg rate of silkworm germplasm resources, which comprises the following steps: during the period from pupation completion to silkworm moth eclosion, illumination period regulation of 8-hour illumination and 16-hour darkness is adopted, a light source does not contain an ultraviolet wave band, the illumination intensity is 350lx-600lx, and the light source is uniformly distributed; the temperature in the illumination period is maintained at 26-28 DEG C, the temperature in the dark period is reduced to 23-25 DEG C to form a day-night temperature difference, and the temperature change and the illumination period are switched synchronously or adjusted gradually in stages; the relative humidity in the illumination period is controlled to be 70-75%, the relative humidity in the dark period is improved to be 75-85%, and the humidity change is synchronous with illumination period switching. The method is mainly used for silkworm germplasm production by regulating and controlling the photoperiod to cooperate with temperature and humidity changes and simulating a natural autumn cooling signal to induce diapause, the storable and planned production of silkworm eggs is guaranteed, and resource waste is reduced.

The invention discloses an AI visual defect identification and detection method integrated with a light supplementing module, and relates to the technical field of computer vision, and the method comprises the following steps: S1, data acquisition: carrying out multi-angle shooting on a product at a fixed station of a production line by using an industrial camera integrated with the light supplementing module, the light supplementing module automatically adjusts the illumination intensity and angle according to product surface characteristics and ambient light conditions; s2, image preprocessing; s3, feature extraction; s4, defect classification / positioning; and S5, outputting a result. According to the AI visual defect identification and detection method integrated with the light supplementing module, the light supplementing module is integrated, and the programmable LED light source array is adopted, so that the change of the illumination intensity of a production line can be sensed in real time, and the illumination intensity and the angle can be automatically adjusted, and therefore, the problem that the local part of an image is too bright or too dark due to ambient light fluctuation can be effectively avoided; especially for highly reflective materials such as metal and coated surfaces, the light supplementing module can select the angle combination with the weakest reflected light for light supplementing.

The invention discloses a night vehicle track identification method, which comprises the following steps: preprocessing night traffic video data to obtain multiple frames of first night images; filtering the first night image to obtain a second night image including a mobile brightness area; constructing a parameter matrix for converting a two-dimensional matrix frame of the daytime double vehicle lamps into three-dimensional coordinates; constructing a plurality of two-dimensional pre-selection frames containing bboxes in the second night image according to the bbox sizes of the double vehicle lamps in the daytime of the vehicle; converting the bbox center point in the two-dimensional preselected frame into a frame center point under a three-dimensional coordinate system through a parameter matrix; and carrying out track similarity matching on the obtained frame center point to remove ground reflection data. The method has the advantages that the method does not depend on a deep learning model, the problem of feature extraction failure caused by insufficient illumination at night is avoided, stable operation can still be achieved in extreme scenes such as all-black night high-speed scenes, and the algorithm reliability is remarkably improved.

The invention discloses an all-weather unmanned aerial vehicle target detection method and system based on reflectivity guidance. The method comprises the following steps: extracting an RGB feature set and an IR feature set from input data; using a reflectivity characteristic with a dark light resistance characteristic as a reference characteristic to align the infrared characteristic, and then using the aligned infrared characteristic as the reference characteristic to further align the reflectivity and the visible light characteristic; the aligned visible light features, the aligned infrared features and the aligned reflectivity features are input into an illumination perception selective fusion module, feature interaction is carried out in a hidden state space, and corresponding complementary features are generated; and adding the alignment characteristic and the complementary characteristic to obtain an enhanced characteristic, then directly adding the enhanced characteristics of the RGB and IR modes to obtain a fusion characteristic, and sending the fusion characteristics of the last several stages to the neck and the head of the detection network to generate a final detection result. According to the invention, effective cross-modal fusion is realized to adapt to different degrees of darkness and illumination changes.

The invention provides a railway weak light environment boundary dynamic perception detection method comprising the following steps: obtaining a to-be-detected image of a railway perimeter in a weak light environment and inputting the to-be-detected image to a boundary dynamic perception detection network, the boundary dynamic perception detection network comprising an illumination correction network module and a detection module; performing global brightening, darkness correction and edge detail enhancement on the to-be-detected image through the illumination correction network module to obtain a corrected image; and performing target detection on the corrected image through the detection module to obtain a detection result. According to the method provided by the invention, the surrounding miscellaneous personnel can still be accurately identified under an extremely low illumination condition, so that the safety detection capability of a railway at night or in a tunnel is improved.

The present invention provides a method for adjusting the brightness of illuminators in a processing apparatus, which reduces the brightness difference between illuminators. In a first processing apparatus, a storage device stores a sample image obtained by photographing a specified pattern of a workpiece with the brightness of an illuminator specified by a first control value together with the first control value, and copies and stores it together with processing conditions in a storage device of a second processing apparatus. In the second processing apparatus, the storage device stores a plurality of comparison images obtained by photographing the specified pattern of the workpiece with the brightness of the illuminator specified by a plurality of different control values, compares the sample image with the plurality of comparison images, determines the control value when photographing the comparison image with the smallest difference in brightness and darkness relative to the sample image as the second control value, and sets the difference between the second control value and the first control value as a correction value of the control value of the second processing apparatus relative to the first processing apparatus in the second processing apparatus.

1. The name of the design product: Automatic dimming filter (XA-5001D PLUS). 2. The use of the design product: This design is used in combination with a welding mask. It can effectively change the brightness and darkness of the filter automatically according to the ambient light, playing a role in protecting the eyes of welders. 3. The key design points of the design product: lies in the shape. 4. The picture or photo that best shows the key design points: the perspective view.

The present invention belongs to the field of image processing technology and relates to a method for three-dimensional reconstruction of high dynamic range reflective surfaces based on domain generalization. The method comprises: determining overexposed and underexposed regions in the original image; extracting background intensity feature information from the long-exposure image using a UNet network, and obtaining dark and bright features through brightness estimation; generating a pseudo-brightness feature map based on the dark and bright features; estimating the darkness offset between the dark features of the original image and the pseudo-brightness feature map, and the brightness offset between the bright features and the pseudo-brightness feature map using extended deformable convolution; fusing the darkness offset and brightness offset with a fringe image to obtain a corrected fringe image, and performing three-dimensional reconstruction using the corrected fringe image. The present invention significantly improves the modulation distribution of the fringe image, significantly improves the quality of the fringe image under HDR conditions, and provides high-quality input for subsequent three-dimensional reconstruction.

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

This invention discloses a method and system for identifying electrical meter readings. The method includes: irradiating the electrical meter panel with preset light using a transmission and acquisition module to obtain reflected light from the panel, and acquiring this reflected light; receiving the reflected light from the panel using an image generation module to generate a brightness and darkness map of the electrical meter, and obtaining a pointer reflection pattern and a starting point reflection pattern based on the brightness and darkness map; constructing a first baseline and a second baseline using a reading calculation module based on the pointer reflection pattern and the starting point reflection pattern; identifying angles based on OpenCV, the first baseline, and the second baseline; and calculating the radian based on the angle and the length of the first baseline to obtain the electrical meter reading. This method can accurately identify the electrical meter reading based on the brightness and darkness map, without relying on panel readings, and can accurately obtain the electrical meter reading.

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.

A method, system, terminal device, and storage medium for image metering and exposure processing, comprising: obtaining image information output by an endoscope's image sensor to obtain an original image corresponding to the current frame; partitioning the original image to obtain multiple sub-images; performing brightness calculations on the sub-images to obtain first brightness data corresponding to each sub-image; calculating third brightness data of the original image based on the first brightness data; and determining whether the third brightness data satisfies a preset brightness range. This application performs partitioning and brightness calculations on each frame of the original image to obtain third brightness data for evaluating the current brightness of the original image. Based on a comparison of the third brightness data with the preset brightness range, real-time adjustments are made to the image for reflections, excessive darkness, or excessive brightness, so that the details of the image captured by the endoscope are well presented, solving the problem of underexposure or overexposure.

The present application relates to the technical field of projectors, and particularly relates to a method for adjusting the brightness of a projector, including: obtaining in real time the reflectivity distribution data of the surface of the projection area and calculating the local reflectivity gradient; non-uniformly partitioning the projection area according to the magnitude of the local reflectivity gradient; for each partition, calculating the compensation brightness based on the reflectivity distribution data and the target brightness; driving the projection light source to output according to the compensation brightness, and updating the reflectivity distribution data in real time. The present application has the effect of solving the problem of uneven brightness and darkness of the picture caused by changes in reflectivity.

The application relates to the technical field of lighting devices, and discloses a building light guide lighting system capable of self-adapting to luminance, which comprises a mounting base, an illumination intensity sensor, a light guide optical fiber, a diffusion cover, a light collecting cover fixedly arranged at the bottom end of the mounting base, a supporting cylinder arranged at the top end of the mounting base, and a light guide cylinder one slidingly arranged in the supporting cylinder; when the illumination intensity sensor detects that the light intensity at the diffusion cover is lower than a preset threshold value, a control module adjusts the working current of LED lamp beads in a light supplementing assembly, luminance is stepwise improved, and indoor light intensity is ensured to be stably within a required range; when it is detected that the light intensity is higher than an upper limit of the threshold value, a motor-driven push rod drives a light guide cylinder two to move downwards, photovoltaic panels in the supporting cylinder are gradually exposed to absorb part of light, and the amount of light entering the diffusion cover is reduced, so that the technical problems that the illumination intensity of a traditional light guide system cannot be automatically adapted to changes in external light and over-brightness or over-darkness is prone to occurring are effectively solved, and the stability and comfort of indoor lighting are ensured.

The invention discloses a temperature and light regulation and control method for promoting rapid growth of haliotis discus hannai in a recirculating aquaculture mode, and belongs to the technical field of factory recirculating aquaculture of haliotis discus hannai. In the breeding stage of the haliotis discus hannai, growth and development of the haliotis discus hannai are promoted by regulating and controlling the breeding light environment; the illumination period in the breeding period is 4 h illumination and 20 h darkness, and 24 h serves as a cycle period; the illumination intensity is maintained in a range of 6.00 + / -1.5 [mu] mol / m < 2 > / s; an illumination spectrum is a full spectrum with a main wave peak of 460 nm; the water temperature is maintained at 18-20 DEG C in the breeding period. According to the method, the light environment requirement in the breeding period of the haliotis discus hannai is met by artificially regulating and controlling the breeding environment illumination, the growth and development of the haliotis discus hannai are accelerated, and the breeding period is effectively shortened.

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. Name of the Design Product: Auto - dimming Filter (XA - 1022D). 2. Use of the Design Product: This design is used in conjunction with a welding mask. It can automatically change the brightness and darkness level of the filter according to the ambient light, thus protecting the eyes of welders. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photograph that Best Illustrates the Design Key Points: Perspective view.

A permanently self-luminous sighting element for marking important points in bright light, poor lighting conditions and in darkness is disclosed. He sighting element includes a cylindrical housing with an axis, a transparent end wall arranged normally thereto as viewing surface, a rear wall arranged opposite thereto, and a liner, which together form an enclosed, gas-impermeable interior space. A cylindrical glass capsule embodied as self-luminous gaseous tritium light source (GTLS) is introduced in the interior space coaxially to the axis, which glass capsule comprises a glass liner surface and a front surface facing the end wall. A pigment layer suffused with persistently phosphorescent pigments and having an end surface facing the end wall is arranged between the glass liner surface and the liner, with the pigment layer and the GTLS belonging to the same colour tone.

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 utility model relates to the technical field of lighting devices, and discloses a brightness-adjustable vehicle-mounted backlight source which comprises a protective shell, the lower side of the protective shell is fixedly connected with a suction cup base, the protective shell can be installed in a vehicle through the suction cup base, and the upper side of the protective shell is provided with an installation groove. The interior of the mounting groove is fixedly connected with an LED backlight plate, the interior of the mounting groove is fixedly connected with a first light shielding plate, the first light shielding plate is arranged on the upper side of the LED backlight plate, a plurality of light transmitting grooves are formed in the upper side of the first light shielding plate, and a brightness adjusting mechanism is arranged on the protective shell. A driver can adjust the brightness of the LED backlight plate according to the surrounding environment through the brightness adjusting mechanism, in this way, the driver can adjust the brightness of the vehicle-mounted backlight source according to the brightness of the surrounding environment, the vehicle-mounted backlight source is made to be in the proper brightness, and then the comfort level and safety of the driver during driving are improved.

This invention discloses a method for regulating the light environment to promote gonadal development in female Russian sturgeon, belonging to the field of aquaculture technology. By regulating light intensity and photoperiod during stages II and III of ovarian development in female Russian sturgeon, the gonadal development rate is accelerated; the daytime light intensity is 7.99±4.44 W / m². 2 / s, nighttime light intensity 4.42±0.95W / m 2 The light cycle is 18-24 hours of light followed by 0-6 hours of darkness, with artificial lighting for 4-6.3 hours, and a 24-hour cycle. By adjusting the intensity of natural daytime light and supplemental LED lighting at night, the light intensity and photocycle are modified to meet the light environment requirements of flow-through cultured female Russian sturgeon during gonadal development. This promotes the speed of gonadal development, increases the average egg diameter, reduces individual differences in gonadal development among female Russian sturgeon, and ultimately improves the productivity and economic benefits of aquaculture enterprises.

The application discloses a brightness compensation method, a display panel and a storage medium. The method comprises the following steps: converting a first picture driving mode into a second picture driving mode through a center control board, wherein color pixels on a frame output by the first picture driving mode have the same polarity, and the second picture driving mode outputs frames, and polarities of adjacent color pixels on the left and the right of the frames are different; and compensating two brightnesses corresponding to two color pixels with the same color and different polarities on the frames output based on the second picture driving mode to compensate the brightness of a display picture. The picture driving mode with the color pixels on the output frames having the same polarity is converted into the picture driving mode with the color pixels on the output frames being different polarities on the left and the right, and the brightness and darkness of the color pixels with different polarities and the same color on the same line are complementary and offset, so that the display picture is prevented from having the difference between the brightness and the darkness caused by the single polarity.

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 present invention relates to the technical field of UAV formation performance, and particularly relates to a method for adjusting the brightness and darkness of lights in UAV formation performance and an LED driving circuit. By collecting the dance step state values of the UAV light board and determining whether the collected dance step state values are equal to the preset dance step state standard values, when the collected dance step state values are equal to the preset dance step state standard values, the current light board information of the UAV light board is collected, the collected light board information is used to obtain the current gear information of the UAV light board, and according to the stored third brightness information table, the dimming coefficient corresponding to the current gear information is calculated. Then, based on the current light board information and the dimming coefficient corresponding to the current gear information, a current dimming file for the UAV light board is generated. Finally, the lights are displayed according to the dimming file, and the UAV light board is dimmed or brightened according to the dimming coefficient, so that the current illumination brightness adapts to the performance requirements, thereby improving the UAV formation performance effect.

The utility model relates to the technical field of automobile atmosphere lamps, and discloses an automobile atmosphere lamp light guide strip assembling and positioning device which comprises a bottom plate, and the top of the bottom plate is provided with a supporting support, a middle light guide strip profiling support and a tail light guide strip profiling support. The problem that printing ink on the surface of a light guide strip deviates in the atmosphere lamp light guide part machining and assembling process is solved, the designed tool tangent plane is completely tangent to the lower limit of the light guide printing ink, and therefore the problem that the light guide part is locally bright and dark after being assembled due to the fact that the light guide strip printing ink is not tangent is screened and intercepted; the problems that due to the vertical tolerance problem of the neck of the lamp holder and the light guide strip, the light guide strip is not centered in the lamp holder in the assembling process, the assembling brightness of the light guide piece is not consistent, and the lamp holder falls off are solved. The problems that glue is gathered at the joint of the lamp holder and the light guide strip due to the fact that the glue amount cannot be controlled when glue is dispensed at the joint of the lamp holder and the light guide strip, and the consistency of the light guide piece is poor after the glue is cured are solved.

The utility model discloses a polyhedral dice, and relates to the technical field of dice. Wherein an accommodating space is arranged in the outer shell, and at least part of the surface of the outer shell is light-transmitting; the inner shell is arranged in the containing space, a circuit board is arranged on the surface of the inner shell, a light source is arranged on the circuit board, a power source is arranged in the inner shell, and the circuit board enters the inner shell through an opening formed in the inner shell to be connected with the power source. The inner shell is arranged in the outer shell, and the circuit board with the light source is mounted on the surface of the inner shell, so that the light source can illuminate the surface of the dice even in an environment with insufficient light or complete darkness, and players can clearly see the points of the dice. The visibility of the dice is greatly improved, and no extra light source or close distance observation is needed. The structures of the inner shell and the outer shell are relatively independent and can be tightly matched, so that an internal light source and a circuit system are effectively protected, and the damage risk caused by external collision or falling is reduced.

The invention relates to a large-size pathological section panorama generation method based on repetition degree positioning. The method comprises the following steps: firstly, acquiring a dyed tissue slice image, and preprocessing the dyed tissue slice image; then, carrying out illumination correction, contrast enhancement and denoising processing on the preprocessed dyed tissue slice image; then, determining an overlapping region sub-image based on the dyed tissue slice image, and determining a feature point transformation relation based on the overlapping region sub-image; and finally, carrying out in-line splicing and inter-line splicing on the dyed tissue section image based on the feature point transformation relation to obtain a pathological section panorama. That is to say, through the preprocessing processes of image quality compression, edge detection and the like, blank images are effectively removed, and illumination correction, contrast enhancement and denoising processing are performed, so that the brightness of the generated panorama is uniform, accurate positioning is performed based on repetition, and the splicing accuracy and efficiency are improved.

A system to illuminate fruit and / or vegetables in the food storage facility, comprising a lamp (8) and a controller (12). The lamp is operable to provide the illumination with a first light output and a second light output, the first light output having a higher intensity and at least a red-bias spectrum relative to the second light output. Further, the system comprises a controller for controlling the illumination of the fruit and / or vegetables in the food storage facility by controlling the lamp. The controller is configured to apply the illumination in a sequence comprising a period of darkness, followed by the first light output for a first period, then followed by the second light output for a second period.