63 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.

The invention relates to a method of manufacturing a 3D item by means of fused deposition modeling. The method comprises the step of depositing a 3D printable material to form a layer stack of 3D printed material, wherein each layer of the layer stack has a layer height and a layer width. The 3D printable material comprises a thermoplastic polymer and light transmissive particles. The layer stack comprises a plurality of the light transmissive particles, each light transmissive particle having a particle width, being the dimension of the light transmissive particle in a direction parallel to the layer width. For the plurality of light transmissive particles, each ratio of the particle width and the layer width is at least 0.6 so that, in the layer stack, the plurality of light transmissive particles forms a plurality of pinholes delimited by a wall part. When the 3D item is illuminated by a light source, the pinholes create relatively small virtual light sources on the surface of the 3D item, opposite to the surface that is illuminated by the light source, thereby providing a sparkling light effect for an observer looking at the 3D item.

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.

A method for detecting flashing lights, implemented by a device comprising at least one image acquisition device and a computer, characterized in that it comprises: an acquisition (100) of an image stream; for at least one image of said image stream, a segmentation (120) of the image comprising: a calculation (121) of a differential image resulting from the pixel-by-pixel difference in intensity between the image under consideration and a preceding image in the stream, as well as an extraction (122) of the segments of the differential image exhibiting absolute values ​​of intensity difference greater than a predefined threshold; and for each of the segments of said segmentation, an association (130) of the segment with a flashing light tracking marker in the image stream. Abstract figure: Figure 1

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 invention relates to a method for mitigating scintillation light in a scene of interest imaged by an event-based camera (7) wherein the event-based camera (7) comprises a plurality of pixels wherein the imaging behavior of the plurality of pixels is affected 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 steps of: 1) operating (1) an event-based camera (7) having an assignment of a first value of a set of pixel parameters, the operation (1) providing a plurality of events (2) generated by the event-based camera (7); the method includes generating a plurality of events (2), reconstructing (3) an image based at least on the generated plurality of events (2), determining (4) at least one region in the reconstructed image, the determined at least one region corresponding to at least one spatial region in a scene of interest, the scene of interest including at least one flickering light source (8, 9) active during operation of the event-based camera (7), determining (5) a subset of pixel parameters of the set of pixel parameters, said subset of pixel parameters affecting the imaging behavior of the pixels in the determined at least one region, assigning (5) a second value for the determined subset of pixel parameters, said second value being determined to mitigate flicker in the pixels of the determined at least one region, and assigning (6) a second value for the determined subset of pixel parameters, said second value being determined to mitigate flicker in the pixels of the determined at least one region. And updating (5) the first value assigned to the subset of pixel parameters with the second value, and further operating (6) the event-based camera (7) with the updated set of pixel parameters. The invention also relates to an assembly and a vehicle comprising said assembly.

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 present invention provides an image sensor structure, an electronic device, a preparation method and an imaging method, wherein the structure includes: a first type of pixel and a second type of pixel; a modulation function layer, which at least includes a light shielding portion located on the first type of pixel; based on the modulation function layer, the incident light enters the second type of pixel and generates a derived light, the derived light enters the first type of pixel, and a first signal is generated based on the derived light, the second type of pixel generates a second signal based on the incident light, and each second type of pixel corresponding to the same first type of pixel responds to the same type of light signal. The present invention can obtain different light signals based on the first type of pixel and the second type of pixel to improve the dynamic range of the image, and effectively realize the acquisition of photos or videos with flickering light sources. In addition, the light shielding portion and the light guiding portion can be prepared simultaneously, the light signals of the first type of pixel and the second type of pixel can be modulated, and crosstalk between different types of light signals can be effectively prevented, the preparation process can be simplified, and the efficiency can be improved.

The utility model belongs to the technical field of underground water level monitoring, and particularly discloses an underground water level monitoring warning device for geological disasters, which comprises a device frame, a light rod is movably arranged on the inner side of the device frame in a penetrating manner, a floating ball cover is arranged at the bottom of the light rod, and a plumb bob is arranged at the bottom of the floating ball cover. And an electric box is fixedly installed at the top of the device frame, the top of the electric box is electrically connected with an acousto-optic electronic buzzer, and the device frame is provided with a grading alarm mechanism used for accurately prompting the change condition of the underground water level. According to the underground water level monitoring and warning device for geological disasters, in the rapid rising process of the underground water level, the floating ball cover can synchronously move upwards along with the change of the water level, then the driving device is triggered to act, and the attention of related personnel can be rapidly attracted by activating the acousto-optic electronic buzzer, alarm sound and flickering light; the real-time alarm can help a worker to immediately realize the problem, so that the worker takes action in time, and the delay and complexity of accident handling are reduced.

The utility model relates to the technical field of bird repelling equipment, and discloses a multimode bird repelling device which comprises a bottom plate, a solar panel arranged at the top of the bottom plate, a sleeve arranged at the top of the bottom plate, a loudspeaker arranged at the top of the sleeve, flash lamps arranged on two sides of the loudspeaker, and a reflective mirror arranged at the top of the loudspeaker. According to the multi-mode bird repelling device, through cooperative arrangement of the sleeve, the loudspeaker, the flash lamp and the reflective mirror, the device can repel birds through vision and hearing, meanwhile, the height of the device can be adjusted according to needs, so that the device is convenient to maintain when damaged, the height of the device can be adjusted through the sleeve according to needs, and the device is convenient to use. Birds at different heights can be conveniently repelled, the loudspeaker can give out specific sound to enable the birds to have fear in the heart, the flash lamp can give out strong and flickering light to stimulate the birds, and the reflective mirror can rotate to refract sunlight at different angles.

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.

An optical sensor including a photodiode, a waveform conversion circuit, a pixel array, and a processor. The photodiode detects ambient light flicker to generate a sine wave. The waveform conversion circuit converts the sine wave into a square wave. The processor is used to count the square wave using a sampling frequency, and determine whether the ambient light flicker is detected well based on the count value of each square wave and the change in the count values of multiple square waves within the counting period, and decide whether to adjust the acquisition phase of the image frame accordingly.

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.

A light sensor acquires a first image frame relative to a first flicker period and a second image frame relative to a second flicker period. The light sensor adds the first image frame and the second image frame to generate an image frame sum for motion detection; or the light sensor adds every two pixel data of the adjacent pixel rows of the first image frame and the second image frame to generate a low-resolution image frame for motion detection.