15results about "High-speed photography" patented technology

The present invention provides a method for leakage testing of an electrostatic chuck. The method for leakage testing of an electrostatic chuck comprises: a mounting step of mounting the electrostatic chuck on a test stage of a testing chamber; a loading step of loading a dummy substrate in an upper surface of the electrostatic chuck; a decompression step of decompressing an interior of the testing chamber; a tracking fluid supply step of supplying a tracking fluid with visibility to a flow path of the electrostatic chuck; a photographing step of photographing the electrostatic chuck; and a determination step of determining whether a leakage occurs in the flow path by examining an image photographed in the photographing step.

A single-pixel imaging method for an object retracing a motion trajectory, a system, a medium, and a device. The method comprises: a controller generating, according to a predefined formed-image reconstruction algorithm, a modulation pattern sequence having different spatial distributions, and inputting the modulation pattern sequence into a light modulation apparatus (S1); the light modulation apparatus receiving a trajectory pulse signal from a digital signal processor, and simultaneously sending a modulated pulse signal to a synchronous multi-channel signal acquisition apparatus (S2); the synchronous multi-channel signal acquisition apparatus receiving the modulated pulse signal, and being triggered to acquire, at a predetermined sampling frequency, a plurality of sample values of a sampled light signal illuminating an object to be imaged and detected by a first detector (S3); the controller selecting a target sample value from among the sample values as a formed-image reconstruction sample value, the formed-image reconstruction sample value corresponding to a target modulation pattern in the modulation pattern sequence (S4); repeating the above steps until each formed-image reconstruction sample value corresponds to each modulation pattern in the modulation pattern sequence on a one-to-one basis, and generating a formed-image reconstruction sample value sequence on the basis of each formed-image reconstruction sample value (S5); on the basis of the formed-image reconstruction algorithm, the controller performing image reconstruction on the formed-image reconstruction sample value sequence to generate a single formed image of the object to be imaged (S6); and repeating the above steps until a count of generated single formed images reaches a predetermined number (S7). The imaging system is capable of imaging, over an extended period of time, high-speed objects retracing a motion trajectory at varying velocity.

The invention relates to a smooth blasting mesoscopic process visual analysis system and method. The system comprises a borehole peeping instrument, an optical endoscopic instrument, a high-speed camera and a data processing device. The drilling peeping instrument is used for checking and recording speckle changes on the blasting hole of the smooth surface; the optical endoscopic instrument is used for recording optical data of speckle movement and crack propagation images in the blasting process; the high-speed camera is used for recording optical data of speckle movement and crack propagation images in the blasting process; and the data processing device is used for tracking each mass point frame by frame according to optical data of the borehole peeping instrument, the optical endoscopic instrument and the high-speed camera, and determining the displacement of the mass point at each moment by maximizing a cross-correlation function. According to the scheme, the optical data of the rock mass in the blasting process can be accurately collected and recorded, and then through data processing, the rock mass smooth blasting mesoscopic process can be effectively and visually analyzed.

The invention discloses a four-exposure image acquisition method, belongs to a non-contact image acquisition technology, and aims to solve the problem that high-frequency and large-view flow field measurement cannot be realized simultaneously because a laser and a camera are not matched in the prior art. Equipment used in the method comprises two groups of convex lenses, a pyramid reflector, two groups of reflectors, an image sensor and a diaphragm, an optical signal of an object to be measured passes through the lenses and the diaphragm and then is divided into two paths by the pyramid reflector to reach corresponding channels, and the optical signal is captured by the image sensor after passing through the reflectors. The two groups of sensors are exposed for four times in one period, the time difference dt1 of two times of exposure of the first sensor is equal to the time difference dt3 of two times of exposure of the second sensor, and the exposure interval dt2 of the two sensors can be adjusted to be 1 / 2000 s to (1 / 200-1 / 2000) s. According to the invention, the signal acquisition efficiency is high, the intensity of each picture is consistent, and the velocity field measurement of the overall frequency of 200Hz and the local highest frequency of 2000Hz can be realized by matching with a multi-pulse laser.

[Problem] To provide an imaging device and an imaging method with which it is possible to easily switch a double-speed setting without changing a clock and simplify a structure. [Solution] Provided are an imaging device that supports N-times faster imaging and an imaging method therefor, wherein an exposure control unit 7 causes a sensor 2 to be exposed in an exposure period in which exposure is performed at an M-fold speed equal to or less than the numerical value N of an N-fold speed for the video inputted from a lens. The exposure control unit 7 further exercises control by an exposure control signal so that a pixel signal is outputted in the same output period as the N-fold speed after the end of the exposure period and a given period after the end of the output period that corresponds to the numerical value M of an M-fold speed is made a disable period in which no pixel signals are outputted. A video rate conversion unit 5 outputs M frames of the M-fold speed video signal at the same timing as the N-fold speed.

An electronic device is provided. The electronic device includes at least one processor configured to obtain a plurality of first images for one or more objects as per a first frame rate using the camera based on a signal related to image recording and control the camera to perform focusing of a lens included in the camera on at least one of the one or more objects while obtaining the plurality of first images, provide a first portion of the plurality of first images as a preview through the display, control the camera to lock the focusing to prevent a change of the focusing on the at least one object, and identify a designated event related to obtaining the plurality of first images.

The utility model relates to the technical field of optical test equipment, in particular to a filter wheel and a filter device, the filter wheel comprises a wheel carrier, the wheel carrier is a hollow regular polygon prism structure with even-numbered edges, and the end part of the wheel carrier is provided with a connecting shaft; the two opposite side walls of the wheel carrier are evenly provided with the optical filters and the light-transmitting pieces, the optical filters and the light-transmitting pieces are the same in size and weight, the rotating shaft can be prevented from blocking an optical path, global imaging of the optical filtering area can be achieved, the imaging quality of optical equipment can be ensured, and the optical equipment has the advantage of being wide in application range. The light filtering device comprises a mounting bracket; according to the filter wheel, the wheel carrier is connected to the mounting bracket through the connecting shaft, and the wheel carrier can rotate around the axis of the connecting shaft; and the driving assembly is in transmission connection with the connecting shaft.

The present invention relates to an information processing apparatus, an information processing method, and a program, by which a camera exposure can be appropriately controlled using captured images from a plurality of cameras. A first camera imaging range at a second time is predicted at a time before the second time after a first time. An image of an overlapping region is extracted from a captured image at the first time from a second camera, in which the predicted first camera imaging range at the second time overlaps with the second camera imaging range at the first time. An exposure of the first camera at the second time is controlled based on the extracted overlapping region image.

The utility model discloses an intelligent lamp with a camera shooting function, and belongs to the technical field of lamps. Comprising a base, an adjusting mechanism is arranged at the upper end of the base, the adjusting mechanism comprises a bottom frame, the bottom end of the bottom frame is connected with the upper end of the base, a first supporting rod is installed at the upper end of the bottom frame, a second supporting rod is slidably installed in the first supporting rod, and the upper end of the second supporting rod is sleeved with a lampshade; an LED lamp is arranged at the top end of the second supporting rod, a monitoring mechanism is arranged at the upper end of the lampshade and comprises an adjusting seat, the bottom end of the adjusting seat is connected with the top end of the lampshade, a rotary table is rotationally connected to the center of the upper end of the adjusting seat, and a movable seat is installed at the upper end of the rotary table; the interior of the movable seat is rotationally connected with a camera; according to the intelligent lamp, the practicability of the intelligent lamp can be effectively improved, and the intelligent lamp has high practical value.

This invention discloses a method and device for measuring the particle size of micron-sized particles during impact with a wall under high-speed photography conditions, belonging to the fields of image processing and microscopic particle size detection technology. Based on traditional particle shadow velocimetry, this invention utilizes a particle transport device to create identical motion conditions for both standard and test particles. A high-speed camera captures images of the moving particles against a similar background. The acquired images are then processed to obtain the measured particle size. By analyzing the mathematical relationship between the actual particle size of the standard particle and its measured value, the actual particle size of the test particle is finally derived. This invention establishes a particle image processing workflow that can rapidly process large numbers of image samples, effectively achieving high-speed and high-precision measurement of micron-sized particle size during impact with a wall compared to traditional particle shadow velocimetry.

The invention discloses a size-adjustable uniform panel light source and a control method thereof, and relates to the field of high-speed photography. Four groups of I-shaped blades capable of independently and linearly moving in two parallel planes are encircled from four sides to form a rectangular bright window with continuously adjustable size; the integrated control system receives an instruction and drives the blades to precisely and synchronously move, and meanwhile, the brightness of the basic light-emitting unit is adjusted in a linkage manner, so that the precise matching between a light-emitting area and the size of a measured object is realized on the premise of ensuring the illumination uniformity and the edge sharpness; the problems that a backlight source with a fixed size is poor in adaptability and much in image stray light are solved, and efficient and high-quality flexible backlight illumination is achieved.

The invention relates to the technical field of court facilities, and provides a judgment robot for a Pick court, which comprises a bottom plate, a camera alignment mechanism, a driving mechanism, a tire mechanism, a control system, a first visual component and a second visual component, and the first visual component and the second visual component are respectively arranged on two sides of the camera alignment mechanism and can cooperatively work to cover the whole court. The vision assembly is used for obtaining the tracking picture of the athlete, the control system is used for judging the Pick ball according to the global picture shot by the camera alignment mechanism and the athlete pictures tracked and shot by the first vision assembly and the second vision assembly respectively, and the amplified tracking image of the athlete is beneficial for judging whether action violation exists or not. For example, rotating serving, interception serving and the like exist, so that the penalty accuracy is improved.

The present application belongs to the cross technical field of material preparation and solid waste utilization, and provides a cold-state simulation device for a fiber preparation process by a centrifugal method, which comprises a medium storage box, a flow valve, a rotating shaft, a rotating roller and a high-speed camera module, the medium storage box is connected with the flow valve through a pipeline, the flow valve is connected with an outflow port through a pipeline, the outflow port is located above the rotating roller, the rotating roller is fixed on the rotating shaft, the rotating shaft is connected with a rotating shaft driving mechanism, a diffuser plate and an LED light source are sequentially arranged behind the rotating roller, and a high-speed camera module is arranged in front of the rotating roller. And a cold-state simulation method, which adopts a high-speed camera module to record the motion and spreading process of fluid medium flowing out of the outflow port on the roller surface of the rotating roller. By adjusting different equipment parameters, the motion and spreading process of the fluid on the roller surface can be directly observed, which helps to find out the factors affecting the motion of the fluid on the roller surface.

The application relates to the technical field of time display, and provides a microsecond-level time display device, which comprises an FPGA control device and a display device; the FPGA control device comprises a 1MHz main frequency output end, a 1 / 32MHz frequency division output end and a 1 / 1024MHz frequency division output end; the display device comprises more than 32 unit modules, each unit module comprises a D flip-flop, a shift register and 32 display lamp components; the 1MHz main frequency output end is connected with the clock enable end of each D flip-flop; the 1 / 32MHz frequency division output end is connected with the clock enable end of each shift register; the 1 / 1024MHz frequency division output end is connected with the signal input end of the D flip-flop of the first unit module, and the signal input end of the D flip-flop of other unit modules is connected with the signal output end of the D flip-flop of the previous unit module; the signal output end of the D flip-flop is connected with the signal input end of the shift register; and each display lamp component is connected with the signal output end of one shift register. The scheme can accurately provide absolute time and the precision is in the microsecond level.

The invention discloses a low-illumination fast phase imaging system and method based on time modulation event driving. According to the system, the characteristic of asynchronous response of an event camera at a pixel level is utilized, and a time modulation module is introduced into a transmission-type microscopic light path, so that periodic change of illumination intensity along with time is realized, and light intensity information is coded in an event stream. A light intensity reconstruction model is established in combination with event interval change features, Kalman filtering is introduced for dynamic denoising, and a high-fidelity intensity image can be quickly reconstructed under extremely low illumination. Based on the intensity reconstruction result, a phase reconstruction method can be further realized. According to the invention, while the image quality is ensured, the single-frame acquisition time is shortened by more than 90%, the phototoxicity and exposure dose are obviously reduced, and high-speed phase microscopic imaging under a low-light condition is realized. The system is simple in structure and high in compatibility, can be directly integrated with an existing microscopic platform, and is suitable for long-term observation of living cells and quantitative imaging of other light-sensitive samples.