96 results about "Flickering light" patented technology

The invention discloses absolute pointing equipment, an absolute pointing method and interactive equipment. In order to solve the problems of high power consumption, low real-time performance and high cost in the existing scheme, a DVS is arranged in a pointing device and is used for sensing a flicker light source arranged on a pointed device; the pointed device is provided with three or more flickering light sources, and at least three flickering light sources are not collinear. Filtering the event stream output by the DVS, extracting pixel coordinates associated with the flicker light sources, and identifying the identifier of each flicker light source; obtaining a pose parameter of the camera according to the pixel coordinates associated with the flicker light source, and obtaining optical axis information of the camera according to the pose parameter of the camera; according to the optical axis information of the camera, obtaining coordinate information of an intersection point of the optical axis of the camera and the coplanar where the at least three flickering light sources are located; and the pointed device executes a corresponding response according to the coordinate information of the intersection point. The method has the advantages of low cost, low power consumption and high real-time performance.

The invention discloses a relative pointing device and method and an interaction device. In order to solve the problems of high power consumption, low real-time performance and high cost in an existing scheme, the relative pointing method comprises the steps that a DVS is arranged in pointing equipment and used for sensing flickering light sources arranged on pointed equipment, the pointed equipment is provided with at least two flickering light sources, and corresponding imaging points are formed in the DVS; and according to the geometric center of the imaging point, the DVS resolution and the resolution of the pointed device, mapping the geometric center to the pointed device to obtain a mapping point. The invention has the advantages of low cost, low power consumption and high real-time performance, and can realize the relative pointing of the user to the pointed equipment.

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.

A lighting device, such as a light-emitting diode (LED) light source, may operate in an interim operable state to avoid and / or prevent undesirable characteristics in the light emitted by the lighting device (e.g., strobing and / or flickering of a brightness of the light and / or shifting or change of a color of the light). When operating in a normal state, the control circuit may determine if a measured value of a first operational characteristic (e.g., a forward voltage of an emitter of the lighting device) is outside of a range and operate in the interim operable state if the measured value of the first operational characteristic is outside of the range. When operating in the interim operable state, the control circuit may adjust a drive current for the emitter in response to a measured value of a second operational characteristic (e.g., a forward voltage of a detector of the lighting device).

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.

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 provides a pixel circuit, an image sensor and electronic equipment. The pixel circuit comprises a photodiode; the first transmission unit is used for controlling connection and disconnection between the photodiode and the first floating diffusion node, so that the first floating diffusion node generates a first photosensitive signal; the second transmission unit is used for controlling connection and disconnection between the photodiode and a second floating diffusion node, so that the second floating diffusion node generates a second photosensitive signal; wherein the first photosensitive signal is configured to be converted into an image signal, and the second photosensitive signal is configured to be converted into a flicker signal. The image sensor and the Flicker sensor are fused, so that the cost of the camera system is reduced, and the phenomenon that the detected flicker frequency of the flicker light source is different from the flicker frequency of the flicker light source received by the image sensor can be avoided.

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.

The present invention provides a light-emitting device recognition system and a light-emitting device. The light-emitting device has a light source that flashes according to the recognition information inherent in the self-light-emitting device; a camera device that captures the light of the light source of the light-emitting device; a recognition device that recognizes the light-emitting device according to the light of the light source of the light-emitting device that appears in the captured image of the camera device; and an electromagnetic wave transmitting element that emits electromagnetic waves from the camera device or the periphery of the camera device, the light-emitting device also having an electromagnetic wave receiving element that receives the electromagnetic waves from the electromagnetic wave transmitting element, and the light-emitting device changes the light intensity of the light source according to the intensity of the electromagnetic waves received by the electromagnetic wave receiving element.

The invention discloses a building fire-fighting Internet of Things system alarm device, and relates to the technical field of fire-fighting alarm. Comprising a detection part and an alarm part, the detection part comprises a mounting plate and a detection module, the alarm part comprises an upper-layer box body, a lower-layer box body and an alarm navigation mask, a projection lamp, an LED lamp and a loudspeaker are mounted outside the upper-layer box body, a controller and a dispersion assembly are arranged inside the upper-layer box body, and the alarm navigation mask is hoisted below the dispersion assembly. Alarm characters can be projected on a wall, attention of people can be attracted through flickering light, voice broadcasting is carried out at the same time, people with visual impairment and people with hearing impairment can receive alarm information in time, a display screen can synchronously display an accurate fire site, accurate information is provided for people, an escape path is planned for people, a fire area is avoided, and the safety of people is improved. Meanwhile, the alarm navigation mask can automatically fall off, the alarm navigation mask has the voice broadcast and character display functions, escape routes are provided for trapped people, meanwhile, the positions are synchronized to rescue workers, and search and rescue are facilitated.

The scintillator (1A) according to the present invention is characterized by comprising: a supporting substrate (10); a light-emitting layer (14) formed on the substrate (10) and having an electron concentration of 2×10 19 cm ‑3 Above 2×10 20 cm ‑3 The following form is composed of ZnO to which impurities are added and generates scintillation light in response to the incidence of radiation; a protective layer (16) is formed on the light-emitting layer (14) and is composed of a material having a band gap larger than that of ZnO; and a metal layer (18) is formed on the protective layer (16). The supporting substrate (10) is composed of a material that transmits the scintillation light generated on the light-emitting layer (14). In addition, the metal layer (18) functions as a reflection layer that reflects the scintillation light from the light-emitting layer (14). Thus, a scintillator suitable for detecting radiation such as electrons and an electron detector using the scintillator can be realized.

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 invention provides a method, a device and equipment for measuring video perspective time delay of head-mounted display equipment, and relates to the technical field of performance optimization of the head-mounted display equipment, and the method comprises the steps: obtaining a first timestamp of an external flickering light source during each flickering within a preset duration through the head-mounted display equipment, obtaining a second timestamp of each flicker of the flicker light source on the head-mounted display device, wherein the flicker light source can be displayed for other continuously changing contents; calculating a time difference between the first timestamp and the second timestamp; and determining the video perspective time delay of the head-mounted display device according to the time difference. The technical effect of the invention is that the video perspective time delay of the head-mounted display device can be accurately measured.

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.

To provide an imaging apparatus, a method for controlling the imaging apparatus, and a program that can reduce a difference in exposure during imaging under a flicker light source.SOLUTION: An imaging apparatus 1 can perform imaging in a state where light is emitted from a flicker light source 10. The imaging apparatus 1 comprises imaging means (image pick-up device 100), detection means (flicker detection unit 109) that detects a light emission cycle of the flicker light source 10, and control means (CPU 104). The imaging means includes photoelectric conversion means (photoelectric conversion unit 301) that performs photoelectric conversion to generate electric charges, and storage means 300 that stores the electric charges from the photoelectric conversion means sequentially at least twice, that is, first storage and second storage, per frame, and maintains the storage state. According to the light emission cycle detected by the detection means, the control means controls the time from the start of the first storage until the start of the second storage to be 1 / N of the light emission cycle.SELECTED DRAWING: Figure 4

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.

To provide an optical information reading device which suppresses flickering of light for reading an optical code.SOLUTION: An optical information reading device is provided, comprising a light source, an image sensor configured to repeat first exposure and second exposure, and a control unit configured to control the light source such that the light intensity centers of exposure illumination during the first exposure and the light intensity centers of dummy illumination before and after, or before, the second exposure lie at equal time intervals.SELECTED DRAWING: Figure 5

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.

The wooden Christmas lamp toy comprises a base, a gear motor is fixedly installed on one side of the bottom in the base, short rotating rods are arranged at the upper end of the gear motor and the other side in the base, circular grooves are formed in the two sides of the top of the base, rotating plates are arranged at the tops of the two circular grooves, and the rotating plates are arranged on the rotating plates. Santa Claus is fixedly mounted at the tops of the two rotating plates. According to the wooden Christmas lamp toy, through the design of a gear motor, a short rotating rod, a long rotating rod, a rotating wheel, a belt, a Christmas bell, a rotating plate, a Santa Claus, a cam, a rolling groove, a push rod, a ball, a first spring, a rubber head, a moving block and a second spring, rotating display of the Santa Claus and flickering light emitting of a lamp are achieved, and the shaking sound production function of the Christmas bell is added; the interaction and interestingness of the toy are greatly enriched, the whole transmission mechanism starts to operate under the driving of the gear motor, and the Santa Claus dances trippingly along with the rotation of the rotating plate.

Direction indicator (4), in particular with sweeping effect and hazard warning function, with at least one right-hand flashing light (6a, 6c) and one left-hand flashing light (6b, 6d) and a circuit arrangement (8), wherein the circuit arrangement (8) is configured to detect a first operating signal (B1) indicatively for operation of the right-hand flashing light (6a, 6c) and a second operating signal (B2) indicatively for operation of the left-hand flashing light (6b, 6d) and to provide a first control signal (SS1) logic high for controlling the right-hand flashing light (6a, 6c) when an XOR operation of the first operating signal (B1) and the second operating signal (B2) results in a logic high, and to provide a second control signal (SS2) logic high for controlling the left-hand flashing light (6b, 6d) when an XOR operation of the first operating signal (B1) and the second operating signal (B2) results in a logic high,wherein the circuit arrangement (8) comprises a first XOR gate (20a) for providing the first control signal (SS1) and a second XOR gate (20b) for providing the second control signal (SS2), characterized in that the first control signal (SS1) controls a first wiper signal generator (10a) assigned to the right-hand flashing light (6a, 6c), and the second control signal (SS2) controls a second wiper signal generator (10b) assigned to the left-hand flashing light (6b, 6d), wherein activation of the assigned wiper signal generators (10a, 10b) is omitted if identical input signals are present at the respective two inputs of the respective XOR gates (20a, 20b), so that the respective rear flashing light (6c, 6d) does not exhibit a wiper effect.

The invention provides a flicker light source detection method and electronic equipment, and in the method, the electronic equipment sets the exposure time of a first camera as an integral multiple of a first light energy period, sets the exposure time of a second camera as an integral multiple of a second light energy period, and carries out flicker detection on images collected by the two cameras. And if the first image contains the water ripple characteristics, determining that a flickering light source of a second light energy period exists in the environment, and exchanging the light energy periods corresponding to the two cameras. And if the second image contains the water ripples, determining that the flickering light source of the first light energy period exists in the environment, and keeping the setting of the current light energy period. If the two images do not contain the water ripples, the flickering light source does not exist in the environment. In this way, whether the environment is a flickering light source with the first light energy period or a flickering light source with the second light energy period or not can be detected at a time; the exposure time is adjusted according to the detection result, and the water ripple phenomenon is avoided.

The embodiment of the present application provides a flickering light source detection method and an electronic device, and the electronic device implementing the method has two or more rolling shutter cameras, including a first camera for image preview display and a second camera for detecting the flickering light source. In the method, after starting the first camera to provide a preview image, the electronic device can start the second camera again, and set its exposure time to be shorter than the light energy cycle, such as 9 milliseconds, and perform image recognition on the image captured by the second camera to achieve the purpose of detecting the flickering light source. The image captured by the second camera is not sent for display, but is only used to detect the flickering light source. In this way, the flickering light source can be detected without the need to introduce additional dedicated detection devices, and the user can also be prevented from seeing the generation of water ripples.

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.