33 results about "High speed video" patented technology

The invention discloses a time interval measurement system based on a high-speed video collector, belongs to the technical field of time interval measurement and metering traceability, and aims at solving the problems that in the prior art, time interval measurement triggering is not synchronous, errors are large, and visual triggering equipment is difficult to calibrate accurately. The system adopts a synchronous staggered double-high-speed camera to collect visual information of a device under test (DUT) and an external standard time interval instrument; embedding traceable first electronic timestamp information for each frame of acquired image based on the electric signal of the standard instrument; meanwhile, starting and stopping event characteristics of the DUT and visual display readings of the standard instrument are automatically recognized through an artificial intelligence (AI) model, a second visual time information source is obtained, and the system calculates the accurate time when an event occurs through a sub-frame-level time interpolation algorithm; and executing dual redundancy cross validation between the first electronic timestamp information and the second visual time information, calculating a high-precision time interval on the basis of validation, and evaluating the uncertainty of the high-precision time interval.

This disclosure presents embodiments of a model acceleration method, a video generation method, an apparatus, a device, a medium, and a product. One specific implementation of the method includes: determining a sample set and an original video generation model, wherein the samples in the sample set include reference images and audio; performing conditional distillation on the original video generation model based on the sample set to obtain a first video generation model, wherein the number of forward propagation steps of the first video generation model is less than the number of forward propagation steps of the original video generation model; and performing distribution matching distillation on the first video generation model based on the sample set to obtain a high-speed video generation model, wherein the number of inference steps of the high-speed video generation model is less than the number of inference steps of the original video generation model. This implementation relates to audio-driven video generation, reducing the computational complexity and inference latency of the model, and facilitating deployment and use in scenarios with limited computing resources.

Systems and methods transfer video data to an image processing system from a video source. Pixel data is received in a local buffer of a network interface controller and provided in a video transport packet. The video transport packet includes the pixel data, a media access control header and a video header. The video transport packet is received by another network interface controller that provides the pixel data directly into a video frame buffer of the image processing system.

The invention relates to the field of video collection, in particular to an anti-frame-loss high-speed video collection device and method, and the device comprises a video collection module which is used for collecting video data, adding a frame identifier for each video frame in the video data to form frame data, and transmitting the frame data to a video storage module; receiving a lost frame identifier sent by the video storage module, determining corresponding frame data according to the lost frame identifier to obtain lost frame data, and resending the lost frame data; the video storage module is used for receiving the frame data and the lost frame data, calculating a frame identifier of a lost video frame according to the frame identifier to obtain a lost frame identifier, and sending the lost frame identifier to the video acquisition module; and arranging the received frame data and the lost frame data according to the frame identifier to obtain video data. According to the invention, the problem of bandwidth preemption of the main data stream by real-time retransmission is avoided; therefore, the integrity of the video frame is ensured on the premise that the finally generated video stream does not interfere with real-time transmission at all.

The present invention relates to the technical field of clock springs, and in particular to a clock spring for high-speed video signal transmission, comprising an annular upper cover, an annular rotor being arranged at the upper end of the upper cover, an annular base being arranged at the lower end of the upper cover, a cable assembly being arranged between the upper cover and the base, the cable assembly comprising a connector 1 fixed on the rotor, the connector 1 being defined as being located at the left end of the rotor, the cable assembly further comprising a connector 2 fixed at the right end of the base, a PCB board being arranged at the lower end of the connector 1 and an FPC connector being arranged at the upper end of the two PCB boards, an LVDS cable being arranged between the two FPC connectors; each connection point between the connector 1, the PCB board, the FPC connector and the connector 2 is provided with a plastic package; the arrangement of the cable assembly enables the clock spring to shield external electromagnetic interference while meeting the requirements of high-speed video signal transmission; and the arrangement of the plastic package at the connection point can avoid interference signals in a high-humidity environment, thereby enhancing the stability of the clock spring.

The invention relates to the technical field of projection display, and discloses a vehicle-mounted ground projection method and system, a server, a terminal and projection equipment, a user terminal is adopted to send a video which a user wants to project, the server is adopted to encode the video, to-be-projected video data expressed in a bit plane format is obtained, and the to-be-projected video data is sent to the projection equipment. An executable program is determined according to to-be-projected video data represented in a bit plane format, a server replaces a graph generation step, the executable program is sent to a user terminal, the user terminal sends the executable program to vehicle-mounted ground projection equipment, the vehicle-mounted ground projection equipment stores the executable program in an internal memory, and the vehicle-mounted ground projection equipment stores the executable program in the internal memory. The vehicle-mounted ground projection equipment reads the executable program of the internal memory to the projection chip and performs projection display by using the projection light path, in the process, an external high-speed video interface is replaced, the video which is not stored in the internal memory of the vehicle-mounted ground projection equipment can be projected, and the user experience feeling is improved.

The invention discloses an end-to-end circular identification point automatic identification method for a high-speed video, and the method comprises the steps: building a detection network model which is based on a YOLOv8 network model, adding a plurality of multi-scale direction fusion attention modules MOA in a Neck neck network of the detection network model, adding an angle detection head in a Head detection head network of the detection network model, and carrying out the detection of the angle detection head. Carrying out loss calculation by adopting a mixed loss function L; respectively marking circular identification points in each image in the image sample set, including the size and the angle of each detection frame, and then training a detection network model by taking the marked images as input; and automatically identifying each circular identification point in each frame of image in the high-speed video by using the trained detection network model. By adopting the automatic identification method, the extraction precision of the mark points in a complex scene is improved, and the application range is expanded.

The utility model relates to the technical field of vehicle-mounted displays, and discloses a transparent display screen storage device for a vehicle window, which comprises a display, the right side of the display is fixedly connected with a plug board, the bottom of the display is provided with a high-speed video interface, and the front part of the display is provided with a video interaction mechanism. The panel is provided with a supporting mechanism attached to a car window, the video interaction mechanism is composed of a high-speed video assembly and a touch control assembly, the touch control assembly comprises a mounting frame, the rear portion of the mounting frame is fixedly connected with a touch control interface, and the front portion of the touch control interface is connected with an interface. According to the utility model, through cooperative operation of structures such as the storage box and the control interface, the rear window display is connected with the android mainboard through the video interface and then connected with the vehicle, so that the rear window display can be used in a storage manner, does not depend on a power supply system of the vehicle and does not need to change a vehicle circuit; vehicle fault risks and warranty problems possibly caused by circuit refitting are reduced, and the universality of equipment is improved.

The invention designs a video data storage and processing integrated universal platform, which comprises a mainboard for receiving external video data, compressing the external video data, writing the external video data into an external storage device or an on-board storage space, and performing situation awareness or data fusion processing on the received video data according to requirements; the interface conversion board is used for carrying out interface expansion on the mainboard, connecting other interfaces except the interface of the mainboard, and converting the other interfaces into interfaces matched with the mainboard; and the external storage device is used for transferring the received video data to the external storage device when the storage space of the mainboard is not enough. The video data storage and processing integrated platform realizes the function of processing and storing various signals, especially high-speed video signals, on a single platform, has the characteristics of simplicity in operation, high transmission rate, wide application range and the like, greatly improves the applicability and reliability of the video data storage and processing integrated platform, and is suitable for popularization and application. The problems of single function, complex operation, small storage space, low transmission rate and the like of storage equipment used by an existing aerial bomb product are solved.

The invention discloses an inter-frame tiny offset high-speed video measurement phase correlation matching method. The method comprises the following steps: acquiring a high-frame-frequency image sequence; dynamically adjusting the image sequence through an adaptive window to obtain a neighborhood sub-image; performing gradient real-virtual dual-channel Gaussian filtering on the neighborhood sub-image to obtain a normalized cross power spectrum matrix; performing plane fitting on the normalized cross power spectrum matrix, dynamically adjusting a sampling subset through a noise estimation index and an interior point probability, and performing iterative optimization to obtain an initial offset value; and updating a normalized cross-power spectrum calculation residual offset value based on the initial offset value, iterating until the residual offset value is lower than a preset threshold value, and summing all iteration offset values to obtain a final sub-pixel offset value. According to the method, the robustness advantages of frequency domain phase correlation matching on illumination variation and noise are utilized, accurate identification and tracking of inter-frame tiny offset sequences of target points on the surface of a high-speed moving body under the influence of illumination, angles and the like are achieved, and therefore the accuracy of dynamic monitoring is guaranteed.

The present invention relates to a method and apparatus for high-speed video measurement of the three-dimensional motion parameters of a full sequence of fragment targets. The method comprises the following steps: acquiring a sequence of fragment images captured by a binocular high-speed camera and performing filtering processing; employing a Gaussian background modeling method based on an adaptive learning rate to obtain the two-dimensional pixel coordinates of the fragments in the fragment sequence images; generating fragment tracking trajectories by estimating the clutter rate and average detection probability, and utilizing the Hungarian algorithm to achieve cascade matching of fragments within the same high-speed camera viewing angle using the fragment tracking trajectories; achieving stereo matching of the fragments based on an adaptive matching window size and epipolar geometry constraints of the binocular high-speed camera; and constructing a set of collinearity condition equations using the bundle method to obtain the three-dimensional coordinates of the fragments in the sequence images through indirect adjustment calculation. Compared with existing technologies, the present invention has the advantages of strong adaptability to dynamic environments.

This invention discloses a phase correlation matching method for high-speed video measurement of small inter-frame offsets, comprising: acquiring a high frame rate image sequence; dynamically adjusting the image sequence through an adaptive window to obtain neighborhood sub-images; performing gradient real and imaginary dual-channel Gaussian filtering on the neighborhood sub-images to obtain a normalized cross-power spectrum matrix; performing plane fitting on the normalized cross-power spectrum matrix, and iteratively optimizing the sampling subset by dynamically adjusting the noise estimation index and inlier probability to obtain an initial offset value; based on the initial offset value, updating the normalized cross-power spectrum to calculate the residual offset value, iterating until the residual offset value is lower than a preset threshold, and summing all iterative offset values ​​to obtain the final sub-pixel offset value. This invention utilizes the robustness of frequency domain phase correlation matching to illumination changes and noise to achieve accurate identification and tracking of small inter-frame offset sequences of target points on the surface of high-speed moving objects under the influence of illumination, angle, etc., thereby ensuring the accuracy of dynamic monitoring.

The invention relates to a micro-display circuit, in particular to a digital circuit architecture for a micro-display circuit, which comprises a signal input and decoding module SPII2CUARTDecoder for receiving and decoding low-speed serial port protocol data; the first multiplexer MUX1 is used for selecting the decoded data output by the signal input and decoding module SPII2CUARTDecoder / the high-speed video data processed by the input processing module VIN and writing the data into the storage module SRAM; the storage module SRAM is used for storing low-speed picture data, supporting address assignment to carry out pixel-level access and realizing pixel-level data modification; the reading module SRAM READER is used for reading the low-speed picture data stored in the storage module SRAM; according to the technical scheme provided by the invention, the defects of single transmission mode, insufficient error correction capability and relatively high power consumption in the prior art can be effectively overcome.

The invention relates to the technical field of oily sewage treatment and separation, in particular to an oily sewage demulsification coalescence device and method based on ultrasonic field enhancement. The device comprises an ultrasonic generation system, an oil drop coalescence dynamic control system, a high-speed video acquisition system, a water bath constant temperature system and a liquid level control system, the oil drop coalescence dynamic control system is used for forming a controllable flow shear field and an oil drop system in a micro-flow test container by utilizing a micro-flow control technology; the ultrasonic generation system enables a controllable ultrasonic field to directly act on the flow system, and the field coupling effect under the real working condition is simulated; the high-speed video acquisition system is used for carrying out high-temporal-spatial-resolution imaging and recording on deformation, movement and coalescence processes of oil drops in the coupling field; and the water bath constant temperature system and the liquid level control system ensure the stability and repeatability of experimental conditions. All the systems work cooperatively, and in-situ, quantitative and visual observation of the whole ultrasonic demulsification process is achieved under the condition of simulating real flow.

A method for high-rate video acquisition comprises providing a video sensor, providing a target area, providing a synchronization reference, capturing a plurality of videos of the target area, wherein each video of the plurality of videos captures a part of the target area, synchronizing the plurality of videos using the synchronization reference, and creating a composite video. Related systems and computer program products are also provided.

The invention discloses multi-protocol video signal quality analyzer equipment. The multi-protocol video signal quality analyzer equipment comprises an FPGA (Field Programmable Gate Array) Virtex subsystem, an FPGA ZYNQ subsystem, a multi-channel high-speed video signal acquisition subsystem, an analog video signal input module, a power supply module, a clock module and a PC (Personal Computer). According to the invention, consistency test, protocol analysis and signal quality analysis of various mainstream video protocols such as LVDS, HDMI, DisplayPort, FPD-LINK and RGB in an avionics display system are realized, static image analysis, video stream dynamic detection and physical layer signal integrity test are supported, and high-precision signal acquisition and multi-protocol compatibility analysis capabilities are realized. The system integrates the functions of a high-speed oscilloscope, a logic analyzer, a protocol analyzer and a video signal generator, achieves the integrated, standardized and self-loopback test of multi-protocol video equipment, remarkably improves the test efficiency and precision, and has important engineering application values for the research and development verification, production quality inspection and fault diagnosis of display equipment.

The application relates to a long-distance continuous pose high-speed video measurement method, which comprises the following steps: step 1, using a multi-biocular continuous observation joint bundle method adjustment to solve the observation value; step 2, using a self-adaptive variable weight strategy of depth distance and adjustment residual error constraint to process the solving process of step 1), so as to obtain a continuous pose parameter measurement result; and step 3, using a position and posture parameter dynamic inversion based on plane fitting to optimize the continuous pose parameter measurement result obtained in step 2). Compared with the prior art, the application has the advantages that long-distance moving target dynamic position and posture parameters can be measured continuously with high precision, the measurement positioning precision is better than 3mm, and the precision is improved by more than 30% compared with the precision of an international famous visual measurement software.

The present invention discloses a multimodal video interpolation method based on event camera reconstruction reference. First, an event stream is generated from a high-speed video through an event generation model and aligned with the frame on a time scale to ensure that video interpolation frames can be performed at any time during the training process. The event stream is processed into voxels and event attention masks, and the voxels are input into a reference frame reconstruction network to generate a reference frame. The reference frame processed by the event attention mask strategy and the video frame are input into a synthesis network based on a reference frame for bidirectional alignment, thereby synthesizing a coarse interpolation frame. Finally, the coarse interpolation frame, event voxels and two video key frames are input into an interpolation frame refinement network to generate a clear interpolation frame. The present invention utilizes event-based references to directly synthesize intermediate frames, avoiding the necessity of explicit motion estimation, thereby greatly enhancing the ability to handle motion occlusion.

This invention relates to the field of KVM switching control and intelligent video transmission, specifically to a seamless switching control system and method for KVM switches based on reinforcement learning. The system includes: collecting physical layer state data of the current data link and the target data link, including cable impedance attenuation values, bit error rate before adaptive equalizer compensation, historical timing data readout time, estimated environmental signal-to-noise ratio, and terminal configuration mode; inputting the physical layer state data into a reinforcement learning decision engine based on a deep Q-network, outputting link compensation parameters and pre-loaded timing parameters; performing a virtual handshake operation based on the pre-loaded timing parameters to generate a source-end link hold state; completing the reconstruction of underlying physical layer parameters and cross-matrix switching in the vertical blank area of ​​the video stream, and updating the model reward value based on the retrained state of the switched link; this invention achieves adaptive seamless switching control for high-speed video links such as display ports.

The present disclosure relates to systems and methods for controlling high-speed video. The systems and methods transmit video data from a video source to an image processing system. Pixel data is received in a local buffer of a network interface controller and provided in a video transport packet. The video transport packet includes the pixel data, a media access control header, and a video header. The video transport packet is received by another network interface controller, which provides the pixel data directly to a video frame buffer of the image processing system.

The invention discloses a lossless high-speed camera link video signal rotation transmission system which comprises a fixed disc, a transmitter, a receiver, a transmission shaft, a bearing end cover, an optical fiber slip ring, an optical fiber chuck, a rotor shaft, a stator shaft, a rotor bearing, a stator bearing and a cover plate. Input and output signals of the video signal photoelectric rotation transmission system need to be scrambled and descrambled through the transmitter and the receiver, and the reliability and stability of the input and output signals are ensured by encoding and decoding the input and output signals. The conductive slip ring has the advantages of low time delay, long service life, high signal transmission reliability, strong stability and capability of ensuring the reliability and the stability of signal transmission, and solves the problems of short working period, difficulty in maintenance, unstable / distorted signal transmission and the like when a common conductive slip ring is used for transmitting a high-speed video signal.

The application discloses a camera defibrillation method and system, which collects operation parameters of the camera, determines a defibrillation scheme of the camera based on the operation parameters, and controls a defibrillation component to execute the defibrillation scheme. The application can formulate different defibrillation schemes for different operation conditions, and realizes accurate control and correction of high-speed video stream image jitter.

The invention discloses a vehicle converse driving detection method for a highway, and the method comprises the steps: reading single-frame initial data of a high-speed video stream, inputting the single-frame initial data into a lane line detection model, obtaining a lane line, and generating initial lane information; adaptively generating a first region and a second region; combining the two target detection areas, inputting the two target detection areas into a target detection model to obtain vehicle detection results, fusing the vehicle detection results, and inputting a fused result into a multi-target tracking algorithm to obtain vehicle track information; judging the driving direction of the lane; and based on the track information of the current vehicle and the driving direction of the lane where the current vehicle is located, identifying whether retrogradation occurs. By analyzing the relative position relation between the vehicle movement track and the identified lane in real time, the problem of high calculation overhead caused by analyzing the lane area frame by frame in a traditional high-speed scene vehicle converse driving detection method can be solved.

The utility model provides a beverage production line bottle falling detection device based on visual detection, which is arranged at a bottle falling position of a beverage production line and comprises a movable support, a high-speed camera, a high-speed video camera and a computer, the high-speed camera, the high-speed video camera and the computer are arranged on the movable bracket; the high-speed camera and the high-speed video camera are connected with the computer; when a bottle falling phenomenon occurs in the beverage production line, a maintainer operates the computer to play back pictures recorded by the high-speed camera so as to determine the reason of bottle falling. The high-speed camera is used for recording the whole process of bottle transferring pictures, and the dynamic process of the bottle falling moment can be collected. Compared with the prior art which can only judge the bottle toppling result, the device can provide frame-by-frame backtracking high-definition images for maintenance personnel to help the maintenance personnel to visually analyze bottle toppling inducements such as abnormal speed of the conveying belt, surface structure defects and guardrail scratching, and the accuracy and efficiency of fault diagnosis are greatly improved.

The utility model discloses time interval measuring equipment based on a high-speed video collector, and belongs to the technical field of time interval measurement and metering traceability. In order to solve the technical problems of high measurement uncertainty and incapability of accurately tracing due to difficulty in synchronous triggering of visual triggering type timing equipment, the utility model comprises at least two independently adjustable lenses and light paths, the light guide system is used for receiving and deflecting light of each light path; and a high-speed photosensitive device. The key point is that the light guide system converges light from different lenses and images the light on different areas of the single high-speed photosensitive device respectively. Visual information of a time standard source and a detected object can be synchronously recorded at a high speed through the photosensitive device, and an accurate time interval is calculated by analyzing a video key frame and combining with a known frame rate. According to the utility model, the synchronization error is effectively eliminated, the uncertainty is reduced to millisecond level, the high-precision measurement and traceability of visual trigger equipment are realized, the structure is compact, and the adjustment is convenient.

The utility model relates to the technical field of video distributor control boxes, and discloses a control box with a built-in image signal distribution circuit, which comprises a control box, a camera interface, a video interface and a display screen interface are sequentially arranged outside the control box, and a video distribution module, a power supply module and a protection module are sequentially arranged inside the control box. Wherein the video distribution module comprises three groups of high-speed video buffers and video amplifiers and is used for avoiding image distortion, an AHD image signal is output to a video distributor control box through a camera, the control box outputs two paths of AHD signals, one path of AHD signal is output to a display screen, and the other path of AHD signal is output to a DVR product; and three groups of high-speed video buffers and video amplifiers are arranged, so that the problem of image distortion caused by signal attenuation is solved.

This invention provides a high dynamic range high-speed imaging method and system based on an event camera, belonging to the field of computer vision computational high-speed imaging. The method includes the following steps: constructing a field-of-view coded imaging system for acquiring information on the brightness changes of incident light in a high-speed moving scene; time-division multiplexing sparse pixels on the event camera; calculating the grayscale value of each pixel at the activation time based on the time difference between the first positive event time and the gating time of each pixel output, and obtaining a high frame rate spatially sparse grayscale image; and feeding the high frame rate spatially sparse grayscale image into a spatiotemporal grayscale completion neural network to obtain a dense high dynamic range high-speed video. Compared to current event camera-guided high dynamic range high-speed scene imaging methods, this invention eliminates the need to construct a hybrid camera system of event camera and traditional camera, requiring only one event camera, and can obtain realistic high dynamic range grayscale values ​​of the scene with less motion blur, achieving high-speed imaging at thousands of frames per second.

The invention discloses a method for analyzing and processing a high-speed video sequence in a liquid drop collision process, which comprises the following steps of: shooting the liquid drop collision process through an experiment, creating a layered output directory according to a video image, automatically modeling a background and preprocessing a video, detecting a key event and correcting the image, and analyzing and calculating liquid drop collision kinetic parameters. And verifying a result and outputting data. The method has the advantages that real end-to-end full automation is achieved, the method has the capacity of processing mass video data, the precision and robustness are improved in a leap-over mode, the most stable and most recognizable features are found for calculation by means of the dynamic characteristics of liquid drop impact, subjective errors caused by manual point selection are fundamentally eliminated, and the accuracy and the accuracy of point selection are improved. According to the method, the correction precision is far higher than that of a traditional method, remarkable synergistic effects and technical effects are generated, objectivity and repeatability of data are ensured, reliability and authority of scientific research data are greatly enhanced, and a solid technical guarantee is provided for scientific research.

The utility model discloses a domestic VGA (Video Graphics Array) video signal one-to-two circuit, which relates to the technical field of VGA video signal distribution circuits and comprises an isolation voltage stabilization module electrically connected with a video signal amplification module and a synchronous signal amplification module at the same time. The isolation voltage stabilization module provides voltage and current for the video signal amplification module and the synchronizing signal amplification module, the video input module is electrically connected with the video signal amplification module and the synchronizing signal amplification module at the same time, and the video output module comprises a first output unit and a second output unit. The high-speed video buffer circuit is used for outputting VGA video signals, through the design of the isolation voltage stabilization module, chip damage caused by unstable input voltage or influence on the quality intensity of the output VGA video signals are prevented, and compared with a high-frequency triode of a traditional circuit, the high-speed video buffer circuit is more stable, lower in energy consumption and better in gain effect.