52 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 embodiment of the invention provides a light detection circuit, a proximity sensing device and electronic equipment, and the circuit comprises a first detection module, a second detection module and a light receiving module, and the light receiving module is used for converting light received in a first time period into a first current and a third current. And converting the light received in the second time period into a second current and a fourth current. The first detection module is used for outputting a first detection signal according to the first current and the second current, and the first detection signal is used for representing the distance of the light of the first preset wavelength range emitted into the light receiving module. The second detection module is used for outputting a second detection signal according to the third current and the fourth current, the second detection signal is used for indicating the intensity change of light in a second preset wavelength range in the first time period and the second time period, and if the intensity change of the light in the second preset wavelength range is larger than or equal to a preset threshold value, the first detection signal is determined to be invalid. Therefore, the influence of a flickering light source is eliminated, and the accuracy of proximity light detection is improved.

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 method and assembly for capturing a scene of interest with reduced errors due to light flicker is provided. The present invention relates to a method for reducing light flicker in a scene of interest imaged by an event-based camera (7), the event-based camera (7) comprising a plurality of pixels, The imaging behavior of the plurality of pixels is influenced by a pixel parameter set comprising at least one exposure time parameter and / or at least one digital accumulation parameter, and the method comprises: 1) operating an event-based camera (7) with assigning a plurality of first values ​​to the pixel parameter sets, operating an event-based camera (7), the operation (1) providing a plurality of events (2) generated by the event-based camera (7); 2) reconstructing (3) an image based at least on the generated plurality of events (2); 3) determining (4) at least one region in the reconstructed image, wherein the determined at least one region corresponds to at least one spatial region in the scene of interest comprising at least one flickering light source (8, 9) active during the operation of the event-based camera (7); determining (4) at least one region within the reconstructed image; 4) determining a subset of pixel parameters (5) of the set of pixel parameters, the subset of pixel parameters affecting the imaging behavior of a plurality of pixels within the determined at least one region; assigning (5) second values ​​to the determined subset of pixel parameters, the second values ​​being determined to reduce flicker within pixels of the determined at least one region; and updating (5) the first values ​​assigned to the subset using the second values; and 5) further operating (6) the event-based camera (7) using the updated pixel parameter set; The invention also relates to an assembly and a vehicle comprising this assembly.

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 utility model relates to the technical field of measurement, in particular to a device for measuring critical scintillation fusion frequency. The device comprises an LED light source, an EEG acquisition device and a signal processing unit. According to the utility model, the LED light source and the portable EEG head-mounted equipment are ensured to be calibrated to provide accurate stimulation and record, the EEG head-mounted equipment is adjusted to the head of a subject to ensure that the six electrodes are accurately positioned in a visual central area, and the LED light source is started to display flickering light to the subject to perform visual stimulation on the subject, so that the visual stimulation effect is improved, and the visual stimulation effect is improved. As the accuracy of a measurement result may be affected by subjective factors of a subject, in the test process, the electroencephalogram signals of the subject are collected and analyzed to obtain a more objective and more accurate test result, the collected electroencephalogram signals are filtered and denoised through the signal processing unit, and the accuracy of the test result is improved. The features related to visual stimulation are accurately extracted, the effectiveness of the visual stimulation is improved, and the stability of a detection result is improved.

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 present application provides an image sensor and an electronic device, the image sensor comprising: a pixel array, the pixel array comprising a plurality of pixel regions arranged in an array, each pixel region comprising a pixel circuit, and at least one pixel region comprising a flicker detection circuit; and the exposure control module is electrically connected with the flicker detection circuit and is used for determining the flicker frequency of the flicker light source according to the flicker signal output by the flicker detection circuit and controlling the exposure duration of the pixel circuit according to the flicker frequency. According to the invention, the fusion of the image sensor and the Flicker sensor is realized, the cost of the camera system is reduced, and the detection error of the flicker light source is reduced.

1. The name of the design product: signal lamp. 2. The use of the design product: lamp for flickering light, reminding, warning. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The present invention relates to the field of thin film electrochromic technology, specifically a thin film electrochromic device with a safety inspection mechanism, including a color-changing film body, a crimping block, a accommodating chamber, a matching cover, a light-proof inspection protrusion and a photoresistor sensor. The crimping block is conductively crimped with the color-changing film body, and a accommodating chamber and a matching cover are fixedly installed on one side surface of the crimping block. The accommodating chamber and the matching cover are docked and matched with each other, and the color-changing film body is clamped and fixed between the accommodating chamber and the matching cover. The thin film electrochromic device of the present invention can inspect the color-changing film body after color change through the provided photoresistor sensor and light source module and other structures. A micro LED light source is used to emit a continuous or intermittent flashing light source. The light source passes through the end of the light-proof inspection protrusion, and the intensity of the transmitted light is detected by the photoresistor sensor, thereby realizing the color change of the color-changing film body. Re-inspection of the color change is achieved to achieve a closed-loop control effect.

To provide an optical instrument in which exposure flicker of an image can be reduced in a zooming operation.SOLUTION: An optical instrument (100) comprises: an optical system that comprises an aperture diaphragm (102) having variable aperture diameter, and in which a focal distance and an F value are variable; and control means (120) that controls the aperture diameter for the F value to become a target F value on the basis of the focal distance. The control means control the aperture diameter to be close to first target diameter when a difference between the aperture diameter and the first target diameter corresponding to a target F value is smaller than a predetermined amount, and changes the first target diameter to second target diameter for the difference to become smaller than the predetermined amount when the difference between the aperture diameter and the first target diameter is larger than the predetermined amount.SELECTED DRAWING: Figure 3

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 invention relates to the technical field of LED lighting, and provides an anti-dazzle LED lighting device for a lighting lamp and a method thereof.The anti-dazzle LED lighting device comprises a mounting plate, an LED lamp is arranged at the bottom of the mounting plate, a protective cover is fixedly connected to the bottom of the mounting plate, an anti-dazzle plate is fixedly connected to the protective cover, and a spraying mechanism comprises a first motor; according to the anti-dazzle plate spraying device, through mutual cooperation of the first motor, a smearing brush, a limiting plate and other assemblies of the spraying mechanism, after long-time use, when an inner coating of an anti-dazzle plate is abraded, the first motor can be started, a threaded rod is driven to rotate, a threaded sleeve is driven to linearly move, a connecting rod drives the smearing brush to move, and then the anti-dazzle plate is sprayed; the material is uniformly smeared, the push rod pushes the smearing brush to rotate to ensure that the coating is uniform, so that the effect of smearing the anti-dazzle coating on the anti-dazzle plate after long-time use is achieved, light rays are more uniformly scattered on the surface of the lamp, and discomfort caused by light source concentration or flickering is avoided.

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.

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.

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.