107 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 discloses a rear-mounted holographic focusing schlieren imaging method. The method comprises the following steps: after a laser emits a laser beam, the laser beam is divided into a main light source and holographic reference light; a main light source sequentially passes through a multi-stage beam expander, a soft light screen, a Fresnel lens and a source grating to obtain light beams with alternate brightness and darkness, and the light beams irradiate a flow field; the light beam penetrating through the flow field is focused by the focusing lens, an image of the source grating is formed at the knife edge grating through the focusing lens, and the light beam penetrating through the flow field is modulated by the knife edge grating, so that an image of the section of the flow field is formed behind the knife edge grating; the light beam modulated by the knife edge grid passes through the field lens and is recorded together with the holographic reference light to obtain a holographic focusing schlieren map; performing digital reconstruction to obtain three-dimensional flow field position information; and calculating the three-dimensional density gradient and the density value of the flow field based on the imaging principle of focusing schlieren. The invention further discloses a rear-mounted holographic focusing schlieren imaging system. According to the method and the system, the ultra-high-speed flow field can be measured, and the requirement of an ultra-high-speed aircraft test on fine quantitative measurement of the three-dimensional flow field is met.

The invention provides a lighting device and a dark field detection system and method, and the method comprises the steps: carrying out the pre-detection of the distribution positions of bright defects and dark defects on the surface of a to-be-detected wafer based on a wide-view-field imaging device, and obtaining a defect distribution map of the to-be-detected wafer; classifying the brightness degree of each defect in the defect distribution map, and obtaining light source brightness level distribution corresponding to each position of the wafer to be detected; in the dark field detection device, a light source is provided for a to-be-detected area of a to-be-detected wafer based on linear illumination light, each to-be-detected area on the to-be-detected wafer is scanned, the intensity of a detection light signal is regulated and controlled according to the brightness level of the corresponding light source, and the adjusted detection light signal is collected so as to realize dark field detection. During dark field detection, the detection sensitivity consistency of different pixel positions is good, the light source intensity utilization rate is high, and the image acquisition dynamic range is large.

The invention relates to the technical field of display, and discloses a display picture brightness adjusting method and device and electronic equipment. The method comprises the following steps: acquiring initial backlight brightness data corresponding to a target display picture, wherein the initial backlight brightness data comprises at least one backlight brightness value; according to the initial backlight brightness data, obtaining a backlight brightness adjustment parameter of a target display picture; adjusting a backlight brightness value smaller than an average brightness value of a target display picture in the initial backlight brightness data according to the backlight brightness adjustment parameter to obtain adjusted initial backlight brightness data; and adjusting the display brightness of the target display picture according to the adjusted initial backlight brightness data and the limiting parameters of the display under different brightness. According to the method, the backlight brightness of the dark partition in the initial backlight brightness data can be adjusted, and the brightness-darkness contrast of different partitions is distinguished, so that the content displayed by the display picture is clearer, and a user can have better viewing experience under the constraint of maximum power consumption.

1. Name of the product of this design: Calibration result display bar of the information display graphical user interface of an electronic device. 2. Purpose of this design product: This design product is applied to an electronic device. The portion indicated by the solid line is the calibration result display column of the information display graphical user interface of the electronic device. 3. The design highlights of this appearance design product lie in the interface content of the graphical user interface in the main view. 4. The picture or photo that best illustrates the key points of the design: main view. 5. The rest of the parts are of conventional design, omitting the rear view, left view, right view, top view and bottom view. 6. Use of the graphical user interface: It is used to display calibration results in an automatic analyzer for analyzing specimens (such as blood or urine) in a hospital or a test center. A matrix-shaped chart for representing the measurement results is provided near the center of the interface, wherein the vertical axis represents the electrode type and the horizontal axis represents the evaluation index. By changing the color of each chart in the matrix, it can be shown that its left and right ends are outside the reference value. There is a menu bar on the right side of the interface, which is equipped with start and stop buttons and operation menu buttons. 7. Other situations that need explanation: The part shown by the solid line in the view is the part that you want to protect, and the part shown by the dotted line is the part that you do not want to protect. The dot-dash line is a dividing line used to distinguish the part to be protected from other parts. The gray parts with different shades of gray in the view are not used to express colors, but to express brightness differences.

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.

1. Name of the product of this design: the main body of the information display graphical user interface of the electronic device. 2. Purpose of this design product: This design product is applied to an electronic device. The part indicated by the solid line is the main body of the information display graphical user interface of the electronic device. 3. The design highlights of this appearance design product lie in the interface content of the graphical user interface in the main view. 4. The picture or photo that best illustrates the key points of the design: main view. 5. The rest of the parts are of conventional design, omitting the rear view, left view, right view, top view and bottom view. 6. Use of the graphical user interface: It is used to display calibration results in an automatic analyzer for analyzing specimens (such as blood or urine) in a hospital or a test center. A matrix-shaped chart for representing the measurement results is provided near the center of the interface, wherein the vertical axis represents the electrode type and the horizontal axis represents the evaluation index. By changing the color of each chart in the matrix, it can be shown that its left and right ends are outside the reference value. There is a menu bar on the right side of the interface, which is equipped with start and stop buttons and operation menu buttons. 7. Other situations that need explanation: The part shown by the solid line in the view is the part that you want to protect, and the part shown by the dotted line is the part that you do not want to protect. The gray parts with different shades of gray in the view are not used to express colors, but to express brightness differences.

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 a brightness gradient error determination method and system for an LED display screen, and relates to the technical field of LED display, and the method comprises the steps: constructing a self-adaptive brightness prediction model based on the preprocessed ambient light intensity and real-time image data, and predicting the optimal brightness value of the LED display screen under different ambient light intensities; evaluating the predicted optimal brightness value, and preliminarily adjusting the brightness of the LED display screen according to an evaluation result; deploying a brightness error detection and correction algorithm on the edge computing device, and collecting adjusted LED display screen image data in real time; and detecting the brightness gradient error of the adjusted LED display screen through brightness error detection on the edge computing equipment, and evaluating and correcting a detection result. The brightness gradient error is predicted and corrected in real time, so that the display quality, the visual comfort and the energy efficiency ratio of the LED display screen are remarkably improved, visual discomfort caused by local over-brightness or over-darkness is effectively avoided, and the sense of reality and the ornamental value of display content are enhanced.

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 an irradiation device which can generate sign light light distribution in addition to front area light distribution or low beam light distribution, and which can generate desired light intensity as the whole sign light light distribution.SOLUTION: An irradiation device (1) for vehicle projector which generates light distribution (LV) having a brightness and darkness boundary (HDG) includes a light source (10), a light transmission body (100), a light incident element (101), and a projection device (500). The projection device (500) has a focal surface (P500) and an optical axis line (X). On a boundary surface (106) on the lower side of the light transmission body (100), first and second optical out couple structure (210) is provided, it is constructed so that light is emitted, and outside the light transmission body (100), the light propagates to the projection device (500), and without re-entering the light transmission body (100), the light hits the projection device (500) and an image is formed by the projection device (500).SELECTED DRAWING: Figure 3

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 present invention relates to the field of optical display technology, and relates to a processing method for a reflective film, a reflective film, and a display module. The processing method for the reflective film includes the following steps: providing a reflective layer and a rolling mold; coating a UV structural adhesive on the reflective layer and rolling the UV structural adhesive through a rolling mold; UV curing the rolled reflective layer to form a diffuse reflection layer on the reflective layer; the diffuse reflection layer includes a plurality of reflection parts, wherein at least two reflection parts have different heights on the reflective layer. When the reflective film is prepared by the processing method of this embodiment, by arranging a diffuse reflection layer on the side of the reflective layer away from the substrate layer, the light transmitted toward the reflective film can be diffusely reflected at the diffuse reflection layer, and the light transmitted toward the side of the light guide plate is in a diffuse reflection state, which can effectively improve the problem of light concentration, and improve the problem of uneven brightness while improving the display brightness.

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.