40 results about "Flickering light" patented technology

The application relates to the field of image processing, in particular to an LED double-lamp recognition method and device based on a monocular camera, equipment and a medium. The method comprises the following steps: ensuring data real-time by collecting video frames at a preset frequency, accurately distinguishing constant light and flickering light spots by using bright spot recognition and feature screening, and effectively excluding environmental interference; accurately associating the double-lamp spots of the same vehicle in space and time by using an association matching technology, and improving the accuracy of target vehicle recognition; predicting the vehicle trajectory based on Kalman filtering and other algorithms, and comprehensively judging the line-crossing event by combining the line-crossing time difference and the speed condition, which not only improves the smoothness and anti-interference ability of vehicle trajectory prediction, but also enhances the reliability and accuracy of line-crossing detection, so that the method has high robustness and practicality in complex scenes.

A wearable brain multi-stimulation pain control device is provided, comprising a main support unit, an auxiliary support unit, an audio stimulation unit, and an optical frequency-flashed stimulation unit. The main support unit includes two ear portions corresponding to a user's ears and a front side portion, and the auxiliary support unit includes a mounting portion. Two opposite ends of the mounting portion are pivoted to the main support unit, and the audio stimulation unit includes two speakers that are respectively arranged on the ear portions and can broadcast a binaural beats with frequency following response. The optical frequency-flashed stimulation unit is arranged on the front side portion and can stimulate at least one eye of the user with flickering light, so that the user can obtain multiple stimulations at the same time in a single course of treatment to achieve the effect of improving pain.

An optical sensor, for sensing a sensing frame corresponding to a flicker period of ambient light, comprising: a pixel array, configured to perform N times of exposure operations via at least one pixel of the pixel array in N exposure time intervals to generate N sub-frames, wherein a summation of the N exposure time intervals equals to a sensing interval and the sensing interval is less than or identical to a first flicker period. The optical sensor adds the N sub-frames to generate a summing sub-frame. The sensing frame comprises the summing sub-frame. The adding operation can also be performed to digital signals generated from the sub-frames. The influences caused by the fluctuation of ambient light can be neutralized, since the frame or portion of the frame is sensed at least twice at different phases of a single flicked period. By this way, the conventional flicker issue can be improved.

The utility model relates to the technical field of lighting control, and discloses a stage lighting control circuit comprising a power supply module used for supplying power; the light control module is used for intermittently providing a driving signal; the first path module is used for controlling a transmission path of a signal; the direct-current lamp module is used for performing high-frequency flickering illumination and low-frequency flickering illumination; the state detection module is used for detecting whether the direct current lamp module performs high-frequency flickering illumination or low-frequency flickering illumination work; the second access module is used for transmitting the driving signal to the alternating-current lamp module when the direct-current lamp module does not perform high-frequency flickering illumination or low-frequency flickering illumination; and the alternating current lamp module is used for performing high-frequency flickering illumination or low-frequency flickering illumination. The stage lighting control circuit does not need a redundant driving device, reduces the cost, achieves the alternate control of an AC lamp and a DC lamp, and improves the control intelligence of the circuit.

The utility model belongs to bicycle lighting technical field, specifically disclose a kind of bicycle safety tail light with radar monitoring and camera function.The utility model includes tail light body, the side of tail light body is equipped with monitoring component and warning component, monitoring component includes camera module and radar module, camera module and radar module are used to real-time monitoring bicycle rear road condition, warning component includes lampwick and COB light source, the side of tail light body is equipped with lens body, through radar module in monitoring component real-time acquisition rear 200m vehicle data and synchronous code table, let rider can perceive incoming car without turning back, avoid distraction and imbalance, and through camera module whole process record road condition, can provide evidence for accident and be used for sharing, simultaneously through warning component through 300LM highlight flickering light and high-transmittance lens, form wide-angle warning range at night or in bad weather, let rear vehicle clearly see rider, make it concentrate on riding, guarantee safety.

The present disclosure relates to navigation and to systems and methods for using a dual sensor readout channel to allow for frequency detection. In one implementation, at least one processing device may receive a plurality of images acquired by a camera onboard a host vehicle, wherein the plurality of images are received via a first channel and via a second channel, and wherein the first channel is associated with a first frame capture rate, and the second channel is associated with a second frame capture rate different from the first frame capture rate. The processing device may use images received via the first channel to detect flickering and non-flickering light sources in an environment of the host vehicle; and provide, based on images received via the second channel, images for showing on one or more human-viewable displays.

A light source of a photographing environment in which the electronic device is located is a flicker light source. The method includes: running a camera application in the electronic device; displaying a first image, where first exposure time is less than first duration, and the first image includes banding and / or a color cast image area; detecting a first operation; obtaining a second image in response to the first operation, where second exposure time is an integer multiple of the first duration; obtaining a color transformation matrix and / or a brightness parameter based on the first image and the second image; performing first image processing on the first image based on the color transformation matrix and / or the brightness parameter, to obtain a third image, where the third image is an image obtained by removing the banding and / or the color cast image area; and displaying or saving the third image.

The utility model provides a quality detection device for lighting lamp production. The quality detection device comprises a bottom plate; and the limiting seat is fixedly installed at one end of the top of the bottom plate, and a limiting groove is formed in the limiting seat. According to the quality detection device for illumination lamp production, through mutual cooperation of the limiting seat, the first driving telescopic piece, the clamping plate, the fixing plate, the second driving telescopic piece, the moving plate, the mounting plate, the detection seat, the light shielding plate and other structures, when a lamp is detected, the light shielding plate can effectively block light emitted by the lamp, and the quality of the lamp is improved. A worker is prevented from being exposed to flickering light for a long time, the eyesight of the worker is protected, and the occurrence risk of eye diseases is reduced; and after detection is completed, the light shielding plate can move to the top of the detection seat along with the movable plate to shield the detection seat, so that an operator is prevented from accidentally touching the detection seat during idle detection, the occurrence of an electric shock accident is effectively avoided, and the personal safety of the detector is guaranteed.

This invention provides an imaging device that can reduce the effects of flicker by using an optimal shutter mode under flickering light sources. [Solution] The imaging device comprises an imaging means, a setting means capable of setting a first shooting mode and a second shooting mode different from the first shooting mode, a detection means for detecting flicker, which is a periodic change in the amount of light of a subject, a lens information acquisition means for acquiring information about a lens attached to the imaging device, a shooting parameter acquisition means for acquiring shooting parameters of the imaging device, and a calculation means for calculating optical characteristics using the lens information and the shooting parameters. The setting means sets the second shooting mode if the shooting parameters and the frequency of the flicker do not satisfy predetermined conditions, and sets the first shooting mode if the shooting parameters and the frequency of the flicker satisfy predetermined conditions and the optical characteristics are equal to or greater than the first value.

An insect eliminating device includes a body including a top portion and a bottom portion provided below the top portion; a light portion mounted in the body and including: a UV light element mounted in an open space provided in the top portion; a flickering light portion mounted in the bottom portion; a central conduit providing fluid communication between the open space in the top portion and the bottom portion of the body; a fan, mounted in the bottom portion to direct air from the open space in the top portion, through the central conduit and into the lower portion; and a grid mounted at a bottom end of the central conduit including a plurality of openings sized to allow air and insects to pass downward into the bottom portion of the base and prevent insects from passing upwards into the central conduit.

An image pickup apparatus capable of notifying a user of a photographing method in which the flickerless photographing is effective is provided. The image pickup apparatus includes an image pickup unit configured to pick up an image of a subject and obtain image signals, and at least one processor and / or circuit configured to function as a detecting unit that detects light source information of a light source at a time of image pickup from the image signals, a selecting unit that, in a case where the light source at the time of image pickup is a flickering light source, selects an effective reduction processing method for reducing an influence of the flickering light source from among a plurality of flicker reduction processing methods based on the detected light source information, and a notifying unit that notifies a user of the selected reduction processing method.

A flicker-free light color temperature changing system includes a signal sending module and a light module. The signal sending module has a power supply unit and a microcontroller unit. The light module has a light unit and a logic signal unit. When the power supply unit is operating, the power supply unit supplies a power to the microcontroller unit and the light unit, and the light unit keeps on emitting light. When the microcontroller unit sends a color temperature change command to the light unit via the logic signal unit and the drive unit, the light unit changes a color temperature in a continuous light-emitting state.

The invention discloses an insect interference device and method, and relates to the field of insect behavior regulation and control, the device comprises a power module and an optical module, the optical module comprises at least one reflection unit driven by the power module to regularly move, and the reflection unit is configured to reflect the insect behavior in the movement process. The device periodically reflects ambient light or light emitted by a special light source so as to generate a dynamic flickering light signal with the frequency ranging from 5 Hz to 1000 Hz, and the device is used for simulating various natural visual signals (such as flapping wings, water surface light reflection and flower honey guide) having biological significance to insects or creating'supernormal stimulation 'which does not exist in the nature, and is used for simulating the natural visual signals (such as flapping wings, water surface light reflection and flower honey guide). Therefore, specific behavior interference can be performed on different target insect groups (such as pollinating insects, aquatic insects and predatory insects).

This provides a photoelectric conversion element, etc., capable of determining whether counting errors are occurring due to flashing light sources or light sources moving within a frame. [Solution] The photoelectric conversion element includes an avalanche photodiode, a first counter that counts the output signals of the avalanche photodiode of a first pixel and the avalanche photodiode of a second pixel, a calculation unit that generates a third output signal from the output signals of the avalanche photodiode of the first pixel and the avalanche photodiode of the second pixel, and a second counter circuit that counts the number of the third output signals.

The application discloses a flicker noise filtering system. To solve the flicker noise problem caused by the flickering light source, the flicker noise filtering scheme disclosed by the application is as follows: a first event is received, the time difference between the first event and the previous event of the first event is obtained according to the timestamp of the first event and the timestamp of the previous event of the first event; the size relationship between the time difference and a first threshold value is judged, and the result representing the size relationship is written into a first position in a first list corresponding to the first event in a first storage space; whether the first event is flicker noise is judged according to a plurality of results representing the size relationship stored in a plurality of positions of the first list corresponding to the first event in the first storage space. The application takes the list recording time difference discrimination results as a technical means, solves the flicker noise problem, and obtains the low-power-consumption, low-delay and high-performance noise reduction effect. The application is suitable for the field of event cameras and brain-like computing.

The present disclosure envisages an illumination assembly (100) comprising at least one light-emitting source (10) having one or more light-emitting diodes mounted on a circuit board. An inner lens (20) optically coupled to the light-emitting source (10) to receive light. The inner lens (20) comprises a first optical surface (20a) comprising a facet structure (24), and a second optical surface (20b) positioned opposite to the first optical surface (20a) and formed as a substantially flat surface. The facet structure (24) of the first optical surface (20a) is configured to refract and internally reflect the fed light within the inner lens (20) in cooperation with the second optical surface (20b), thereby generating, when illuminated, a field of caustic highlights externally visible as a sparkling optical effect.

The invention discloses a smart park parking space renting and selling system based on a block chain, and relates to the technical field of smart park management and block chain application, and the system comprises an optical frequency synchronous collection module, an interference feature analysis module, an exposure plan generation module, a brightness detection and adjustment module, and a dynamic rhythm control module. Illumination flickering light signals in the night environment and sampling rhythm data of the infrared recognition device are collected, and a light frequency corresponding graph is generated. According to the invention, accurate identification of the interference time period is realized through light frequency synchronous acquisition and interference characteristic analysis, and the exposure adjustment plan is established to optimize the infrared sampling rhythm, so that the exposure avoids the light energy superposition interval and the brightness is kept stable. And through brightness detection and dynamic rhythm control, a reverse shading section and a short-time silence section are inserted, so that light energy self-adaptive adjustment is realized, and it is ensured that infrared recognition is balanced in exposure, clear in picture and stable in recognition in a stroboscopic environment.

The invention discloses an archive full-life-cycle one-stop optimization method, system and device and a medium, and relates to the technical field of data processing. The method comprises the following steps: firstly, acquiring identity information of a user, verifying an access authority level, and receiving an archive retrieval request when the authority meets a requirement; and querying a storage position according to the target file identification information, and scanning through an identification probe to obtain a specific position coordinate of the target file. And the system calculates the position difference between the target file and the surrounding files, determines the nearest navigation unit and sends an activation signal. And the navigation unit prompts a user of a pick-up position through flickering light and sound. After the user takes out the target archive, the identification probe detects that the code identifier disappears, and a lending record is automatically generated and stored in a preset archive circulation database. By implementing the technical scheme provided by the invention, the management efficiency of the full life cycle of the archives can be improved.

The utility model relates to the technical field of anti-theft labels, in particular to a photochromic intelligent anti-theft label device. The photochromic intelligent anti-theft label device comprises a bottom shell, a top cover, a light-transmitting plate and an installation structure, the top cover is installed on the top of the bottom shell, the light-transmitting plate is arranged on the right side of the top of the top cover in an embedded mode, the installation structure is arranged on the right side of the bottom shell, and the installation structure is used for installing the device on a commodity. The intelligent alarm further comprises a circuit board, an audible and visual alarm and a photosensitive sensor, the circuit board is fixedly connected to the inner bottom of the bottom shell, the audible and visual alarm is installed on the circuit board, the photosensitive sensor is installed at the inner bottom of the bottom shell, and the photosensitive sensor is electrically connected with the audible and visual alarm. The change of ambient light is detected in real time through the photosensitive sensor, and if the label is illegally disassembled, blocked or exposed to abnormal light, the photosensitive sensor triggers the audible and visual alarm to enable the audible and visual alarm to flicker light and give out alarm sound to remind surrounding personnel to pay attention, so that commodities are effectively prevented from being stolen.

A driver circuit (Sj) for light sources (LED1, LED2, LED3, LED4), for example LED sources configured to be powered via a supply line at a supply voltage (VBATT), comprises: a first node (Cj-1) and a second node (Cj), configured to have connected therebetween a light source susceptible to flickering in response to variations of the supply voltage (VBATT) transferred to the first node (Cj-1); an electronic switch (Sj1) set between the first node (Cj-1) and the second node (Cj); a shutdown generator (ITOj), coupled (Sj2) to the electronic switch (Sj1) set between the first node (Cj-1) and the second node (Cj); and flicker-detection circuitry (10, 12, 14, 16) coupled (D) to the first node (Cj-1). The flicker-detection circuitry is configured (10, 12, 14, 16) to generate a flicker-detection signal (FS) in response to the aforesaid variations of the supply voltage (VBATT) transferred to the first node (Cj-1). The flicker-detection circuitry (10, 12, 14, 16) is configured to activate the shutdown generator (ITOj) and render conductive the electronic switch (Sj1) in response to the generation of said flicker-detection signal (FS) so that the light source remains off as long as the disturbance that produces the flicker persists.

The application provides a high-speed bright pupil eye movement tracking method based on an event camera, comprising the following steps: S1, data acquisition: using an event camera in cooperation with an infrared flicker light source to collect human eye data in different scenes; S2, data conversion: converting the data collected by the event camera into frame data; S3, data labeling: labeling the converted data to mark the position of the human eye pupil, and inputting the labeled data into step S4; S4, model training: training the backbone network of a feature extraction model, performing feature extraction training by using a bright pupil detection module, and setting the trained backbone network of the feature extraction model into a bright pupil detection convolutional network and a bright pupil tracking convolutional network; and S5, model conversion: converting the trained bright pupil detection convolutional network and the bright pupil tracking convolutional network. The application can realize dynamic and static data collection of the pupil by the event camera, and realize low-power and high-speed detection and tracking of the pupil by combining with a pulse neural network technology.

A milking robot (1) for dairy animals is provided, said milking robot being equipped with milking means (3), a robotic arm (2) for connecting the milking means, a detection device (4) for determining teat positions, and a controller (10). The detection device comprises a first source (16) for the emission of broadband light, in particular white light, into a solid angle and an optical camera (17) for capturing images with the emitted light. The controller is configured to control a behaviour of emission of said broadband light depending on a criterion which at least determines that the controller increases the light intensity emitted by the first source, at least into part of said solid angle, only at a predetermined minimum ambient illumination. This prevents the dairy animals from being disturbed by flickering light in dark conditions. On the other hand, the additional light ensures more reliable images if the environment itself is already (to some extent) light, and the animals are therefore no longer disturbed as a result.

The invention discloses a flicker light source identification method and system based on a spiking neural network, and the method comprises the steps: constructing a multi-layer cascaded spiking neural network, and sequentially carrying out the event polarity separation, time sequence detection, space-time consistency screening, shape filtering and feedback suppression. And finally, accurately positioning the central point of the light spot through a win-win strategy. The method does not depend on an external single-chip microcomputer, has the characteristics of low cost, low power consumption and high real-time performance, and is particularly suitable for the fields of high-frequency flicker light source positioning and the like.

The utility model discloses a billiard table lamplight decorative plate convenient to replace, which belongs to the technical field of lamplight decorative plates and comprises a table frame. Mounting bottom plates are symmetrically and fixedly mounted on the lower side of the table frame; two special-shaped lamplight plates are mounted on the mounting bottom plate through a fixing mechanism; the fixing mechanism comprises a magnetic attraction fastening module, an auxiliary locking module and a positioning module. A magnetic attraction fastening module and a positioning module are mounted on the mounting bottom plate and the lamplight plate, and an auxiliary locking module for locking the lamplight plate is mounted on the mounting bottom plate and the positioning module; bag openings for billiard balls to roll down are symmetrically and fixedly installed on the table frame. A light controller used for controlling the light plate and the adjusting module is fixedly installed at the bottom of the table frame. And an adjusting module is mounted on the bag opening. In this way, the magnetic attraction fastening module enables the lamplight plate to be connected with the mounting bottom plate in a fastening mode; the auxiliary locking module is used for locking the positioning module, so that the light plate is mounted more firmly; the adjusting module enables the flickering light bar in the light board to flicker; and the interestingness is improved.

The utility model relates to the field of fire-fighting helmets, and discloses a fire-fighting helmet for firefighters, which comprises a helmet shell, the front surface of the helmet shell is movably connected with a mask, one side of the mask is fixedly connected with a mounting plate, the outer wall of the helmet shell is provided with an adjusting groove, and the outer wall of the helmet shell is movably connected with an illuminating lamp. The top of the helmet shell is fixedly connected with a partition plate, and a flashing lamp is fixedly installed at the top of the helmet shell. According to the fire fighting helmet for the firefighter, through the arrangement of the helmet shell, the adjusting groove, the adjusting block, the illuminating lamp, the partition plate and the flashing lamp, the helmet can have the effect of being convenient to use, and an adjustable illuminating structure can be provided when a user wears the fire fighting helmet; in this way, the problem that the illumination position cannot be adjusted due to the fact that the head cannot rotate due to the space problem under the dark condition is solved, the flickering light condition can remind victims and other rescue personnel to judge the position of a wearer more easily, and the use requirements of people are met.

The invention relates to a method for mitigating flickering lights in a scene of interest imaged by an event-based camera, wherein the event-based camera comprises a plurality of pixels, wherein an imaging behaviour of the plurality of pixels is influenced by a set of pixel parameters comprising at least one exposure time parameter and / or at least one digital accumulation parameter, and wherein the method comprises the following steps: 1) operating the event-based camera having an assignment of first values to the set of pixel parameters, said operating providing a plurality of events generated by the event-based camera; 2) reconstructing an image based on at least the generated plurality of events, 3) determining at least one region in the reconstructed image, said determined at least one region corresponding to at least one spatial region in the scene of interest comprising at least one flickering light source active during the operating of the event-based camera, 4) determining a subset of pixel parameters of the set of pixel parameters, which subset of pixel parameters influences imaging behaviour of pixels in the determined at least one region, assigning second values for the determined subset of pixel parameters, which second values are determined to mitigate flicker in the pixels of the determined at least one region, and updating the first values assigned to the subset of pixel parameters with the second values, and 5) further operating the event-based camera with the updated set of pixel parameters. The invention also relates to an assembly and to a vehicle comprising said assembly.

The utility model relates to a multifunctional traffic baton for unmanned and common vehicles, which realizes independent command and overall command for nearby vehicles through a camera AI identification technology and has a function of switching various traffic command instructions and identifiers. Data can be uploaded to a server for proofreading and pushing by adopting an encrypted traffic instruction, the instruction can also be sent through autonomous and independent networking communication, and three modes of sending and verifying the traffic command instruction are provided. A traffic command two-dimensional code and a traffic command indication icon can be dynamically generated according to a command command and displayed on a display screen, meanwhile, the handle part is provided with a multicolor warning flickering light-emitting device, and flickering light can be automatically adjusted according to different commands. The traffic baton is suitable for various scenes, and the efficiency and safety of traffic guidance are improved.

The application relates to a campus monitoring video recommendation method and system based on dynamic background removal, which comprises the following steps: dynamic background elimination: performing background shielding processing on the monitoring video; motion target detection: performing motion target detection on the monitoring video after the background shielding processing; if a motion target exists, the monitoring video is transmitted to a server for other function detection, or is transmitted to a large screen in a monitoring center for display; and a low-complexity motion target detection algorithm based on background elimination is used to overcome the influence of dynamic backgrounds such as leaves, vegetation, flags and flickering lights in the video stream of an outdoor camera on motion target detection, so that effective detection of the motion target is realized; and through screening and recommendation of massive videos, the application reduces the demand of a business function based on deep learning for computing power and reduces the average processing cost of each video stream.

The present application relates to the technical field of visual deformation monitoring, and specifically provides a detection method, device and medium for a flickering light-emitting target, which comprises the following steps: acquiring a continuous image sequence containing the flickering light-emitting target; dividing the continuous image sequence into a plurality of continuous time windows, each time window containing at least two complete target light-dark cycle image data; performing a second difference operation on each time window as an independent calculation unit to obtain a final enhanced image of each time window; and detecting and positioning the flickering light-emitting target based on the final enhanced image of each time window. The method ingeniously uses the second difference operation between continuous frame images to realize fast, accurate and stable identification of the target position, and effectively improves the reliability and recognition rate of the visual deformation monitoring system in a complex environment.

A system for screening hepatic encephalopathy (HE) based on critical flicker fusion frequency (CFFF) detection using visual perception thresholds. The system comprises a frequency setter module that generates a controlled sequence of flickering light signals, an internal oscillator for precise timing, and a frequency tracker module that adjusts the flicker rate based on patient feedback. A frequency re-setter module ensures visual memory effects are minimized by introducing a non-flickering baseline between steps. The system includes a light controller that emits spectrally filtered, intensity-calibrated light optimized for retinal sensitivity. A patient feedback input module records flicker perception responses, while a recording module logs test parameters and outcomes. A secure communication module transmits this data to a remote interface for clinical evaluation. The system dynamically adapts to patient input, enhancing accuracy in determining CFFF, a validated biomarker for minimal HE, thereby enabling early, objective, and non- invasive screening of cognitive dysfunction.