753 results about "High frame rate" patented technology

Scanning Laser Epitaxy (SLE) is a layer-by-layer additive manufacturing process that allows for the fabrication of three-dimensional objects with specified microstructure through the controlled melting and re-solidification of a metal powders placed atop a base substrate. SLE can be used to repair single crystal (SX) turbine airfoils, for example, as well as the manufacture functionally graded turbine components. The SLE process is capable of creating equiaxed, directionally solidified, and SX structures. Real-time feedback control schemes based upon an offline model can be used both to create specified defect free microstructures and to improve the repeatability of the process. Control schemes can be used based upon temperature data feedback provided at high frame rate by a thermal imaging camera as well as a melt-pool viewing video microscope. A real-time control scheme can deliver the capability of creating engine ready net shape turbine components from raw powder material.

Designs and operational methods to increase the dynamic range of image sensors and APS devices in particular by achieving more than one integration times for each pixel thereof. An APS system with more than one column-parallel signal chains for readout are described for maintaining a high frame rate in readout. Each active pixel is sampled for multiple times during a single frame readout, thus resulting in multiple integration times. The operation methods can also be used to obtain multiple integration times for each pixel with an APS design having a single column-parallel signal chain for readout. Furthermore, analog-to-digital conversion of high speed and high resolution can be implemented.

Monitoring systems, devices, and methods for monitoring one or more objects within an environment are disclosed. An illustrative monitoring device in accordance with the present invention can include an image detector, an on-board image processor, and communication means for transmitting an imageless signal to a remote location. The image processor can be configured to run one or more routines that can be used to determine a number of parameters relating to each object detected. In some embodiments, the monitoring device can be configured to run an image differencing routine that can be used to initially detect the presence of motion. Once motion is detected, the monitoring device can be configured to initiate a higher rate mode wherein image frames are processed at a higher frame rate to permit the image processor to compute higher-level information about the moving object.

There is provided herein a system for providing a stabilized video image with continuously scrollable and automatically controllable Line-Of-Site (LOS) and adjustable Field-Of-View (FOV) for use in an Unmanned Aerial Vehicle (UAV), with no moving parts. The system comprising a plurality of fixed oriented sensors disposed in one or more of orientations, a computing unit comprising processor adapted to define a position of a window of interest (WOI) within one or more field-of-views of said plurality of sensors, read pixels data from said WOI, compensate, in real time, for changes in a target position relative to the UAV and for the UAV attitude by continuously scrolling the position of said WOI and provide a continuous high frame rate video image based on the pixels data from said WOI. The system may also provide retrievable high resolution images of the scene, to be stored in internal memory for later retrieve or transmitted to a Ground Control Station in parallel to the real-time video.

An imaging system that is capable of generating high resolution and high frame rate video includes of a beam splitter, two lenses, a high resolution-low frame rate camera, and a low resolution-high frame rate camera. The beam splitter reflects a part of an incident ray. The two lenses gather the ray reflected from the beam splitter and the ray penetrating the beam splitter, respectively. The low resolution-high frame rate camera is a sensor that takes an image of the ray gathered by one of the lenses at a low resolution and a high frame rate. The high resolution-low frame rate camera is a sensor that takes an image of the ray gathered by the other of the lenses at a high resolution and a low frame rate.

Scanning Laser Epitaxy (SLE) is a layer-by-layer additive manufacturing process that allows for the fabrication of three-dimensional objects with specified microstructure through the controlled melting and re-solidification of a metal powders placed atop a base substrate. SLE can be used to repair single crystal (SX) turbine airfoils, for example, as well as the manufacture functionally graded turbine components. The SLE process is capable of creating equiaxed, directionally solidified, and SX structures. Real-time feedback control schemes based upon an offline model can be used both to create specified defect free microstructures and to improve the repeatability of the process. Control schemes can be used based upon temperature data feedback provided at high frame rate by a thermal imaging camera as well as a melt-pool viewing video microscope. A real-time control scheme can deliver the capability of creating engine ready net shape turbine components from raw powder material.

A method of dynamic resonance imaging is provided. A magnetic resonance imaging excitation is applied. Data in 2 or 3 spatial frequency dimensions, and time is acquired, where an acquisition order in at least one spatial frequency dimension and the time dimension are in a pseudo-random order. The pseudo-random order and enforced sparsity constraints are used to reconstruct a time series of dynamic magnetic resonance images.

The present invention relates to methods and systems for the exhibition of a motion picture with enhanced perceived resolution and visual quality. The enhancement of perceived resolution is achieved both spatially and temporally. Spatial resolution enhancement creates image details using both temporal-based methods and learning-based methods. Temporal resolution enhancement creates synthesized new image frames that enable a motion picture to be displayed at a higher frame rate. The digitally enhanced motion picture is to be exhibited using a projection system or a display device that supports a higher frame rate and / or a higher display resolution than what is required for the original motion picture.

An ultrasound imaging system with pixel oriented processing is provided in which a method of producing a Doppler velocity image is accomplished by emitting unfocused acoustic signals into a medium over substantially an entire field; receiving scattered and reflected ultrasonic signals on a transducer array in response to the emission; processing the received ultrasonic signals to extract information to construct a Doppler velocity signal corresponding to at least one point in the medium; and generating on a display device the Doppler velocity image from the processed Doppler velocity signal. Acquisition sequences and signal processing algorithms are described that provide improved quantification of fluid flow parameters, including improved discrimination between regions of blood flow and tissue. Very high frame rate Spectral Doppler and Vector Doppler acquisition modes for real-time and post-acquisition visualization over a large field of view are described.

An ultrasound imaging system with pixel oriented processing is provided in which an acoustic signal is generated, echoes from the acoustic signal are received at a plurality of receiving elements to obtain echo signals that are then stored, a given pixel is mapped into a region of the stored signals, the mapped region of the stored echo signals is organized into array for the given pixel after which the array is processed to generate a signal response for the given pixel to obtain acoustic information for the given pixel. The system can be implemented entirely on plug-in cards for a commercial PC motherboard. The system and method can be implemented for pixel-oriented or voxel-oriented image processing and display, eliminating intermediate data computations and enabling extensive use of software processing methods. Advantages include improved acquisition of signal dynamic range, flexible acquisition modes for high frame rate 2D, 3D, and Doppler blood flow imaging.

A system and method for using computer image processing for selectable task-based digital video compression is described. The system is intended to reduce travel of experts and let these experts direct field agents in performing tasks remotely. The tasks to be performed in the remote field can be monitoring, manipulating, and navigating. A field agent performs the manipulation and navigation operations, this agent can be a human being or a robot. The task-based compression algorithms use computer vision techniques to extract the bare minimum amount of information from the remote field scenery to allow the task to be performed. High frame rate photo-realistic reconstruction of the remote scene is not generally necessary.

The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.

A method and apparatus is provided for high speed, non-contact method of measuring the 3-D coordinates of a dense grid of points on a surface, including high accuracy interpolation between grid points. A plurality of pulsed laser sub-projectors sequentially illuminates a plurality of discrete Gray code bar pattern transparencies carried on a spinning circular code disk to project high frame rate structured light. The structured light is reflected by the surface and recorded at high signal-to-noise ratio by a plurality of high frame rate digital cameras, then decoded and interpolated by electronic signal processing. A numerical formula is derived for numbers of equally spaced discrete code patterns on the code disk that allow each camera to receive pulses from all sub-projectors and all patterns at a constant frame rate. Methods to derive an extended complementary Gray code pattern sequence and to normalize measured signal amplitudes are presented.

A system and method for measuring vehicle speeds using video sensing. The system comprises a tracking camera that generates accurately time-stamped video sequences of the monitored road at high frame rates and a processing unit that analyzes the video sequences in real time to detect moving vehicles and calculate their speeds using the time-over-distance method. The system automatically detects moving vehicles in each image frame and derives vehicle positions from a projective mapping established from reference markers on the road. Time information is obtained from the date and time stamp associated with each image frame. In one example, the system also allows a user of the system to set a trigger speed, and the system automatically saves a video clip of the vehicle whose speed exceeds the trigger speed, recording the speeding vehicle passing through the monitored traffic zone defined by the reference markers.

A pixel design for CMOS image sensors that has a high frame rate potential and, therefore, provides motion capture capabilities. The pixel is designed for global electronic shuttering so every pixel is exposed simultaneously to images incident upon the pixel array plane. The present invention has the advantages of: (1) Allowing the accommodation of changes in the pixel output groupings for different monochrome output format or CFA patterns with only changes in metal routing layers; (2) allowing true electronic shuttering to image moving scene with all the pixels having the same capture time windows; and (3) providing a symmetric global shutter gate and transfer gate to minimize pixel related fixed pattern noise. The pixel architecture provides for a CMOS based, active pixel image sensor comprising an array of pixels formed in rows and columns, with each of the pixels containing at least one active circuit element. There are a plurality of output channels formed such that each of the output channels are operatively connected to a subset of pixels wherein each of the pixel have an attribute that is the same. The pixel architecture also provides an output gate region and a shutter gate region that are symmetric about the center of the pixel. By arranging the shutter and transfer gates, a symmetric manner about the center of the pixel, a more efficient transfer of electrons to these gates is provided. A Pixel Output Bus structure allows configurable connections to column-wise signal busses that provide parallel output channels.

Preferred embodiment systems of the invention use a scalable number of cameras that can image a volume of interest from plurality of angles. The volume can be large and illuminated with general non-coherent illumination. Synchronized cameras process data in real time to addresses particle overlap issues while also increasing observable volumes. Systems of the invention also use higher frame rate cameras to increase the amount of particle travel in each frame. Approaches of the invention alleviate the concerns with additional data accumulation by conducting image processing and segmentation at the time of acquisition prior to transfer from a camera to eliminate a data transfer bottleneck between camera and computer and eliminate a data storage problem. A heterogeneous CPU / GPU processor cluster processes data sent from the plurality of programmable, synchronized cameras and conducting multi-camera correspondence, 3D reconstruction, tracking and result visualization in real time by spreading processing over multiple CPUs and GPUs. Systems of the invention be scaled to hundreds of cameras and fully characterize fluid flows extending to room size and larger.

A low-vision viewer magnifies the face-up source material in the visual field of a camera and displays the magnified image on a VDU or other display means. In a static mode, the camera captures and stores a high-resolution image of the source material. This high-resolution image can be manipulated and subsequently displayed on the VDU. In a live mode, the camera captures a low resolution image of the source material or a high resolution image of a section of the source material to provide a high frame rate for full motion video. In the live capture mode, the low-vision user can move their view around the source material and zoom in on a desired section of interest. The same camera is used in either static or live modes.

An apparatus and method for dynamically varying the frame rate of an image sequence is disclosed. In one embodiment, the image sequence is encoded and stored at different frame rates (e.g., 30, 25, 20 fps and so on). Alternatively, only the motion information, e.g., motion vectors, for the other frame rates are stored.

An image pickup apparatus and method is disclosed by which moving pictures of a high frame rate can be displayed. The image pickup apparatus for picking up moving pictures, includes: a distribution section for distributing light incoming through an optical lens to n directions; n image pickup elements for converting the light distributed by the distribution section into signals at time intervals of 1 / m second to pick up images; and a control section for controlling timings at which the light is to be converted into the signals by the image pickup elements; the control section controlling the n image pickup elements to convert the light into the signals at timings successively displaced by 1 / m×n second to pick up images.

The application discloses a pixel circuit, a display device and a driving method. The pixel circuit comprises a programming module, a threshold voltage extraction module, a capacitor module and a driver module, wherein the programming module is used for receiving a video signal from a data line under the control of a first scanning control line and transferring the signal to the capacitor module; the threshold voltage extraction module is used for extracting threshold voltage information of the driver module under the control of a first power line and storing the information to the capacitor module; the capacitor module is used for storing the threshold voltage information, receiving the video signal of the programming module, superimposing the threshold voltage information on the video signal to form a driving voltage, and supplying the driving voltage to the driver module; and the driver module is used for receiving the driving voltage supplied by the capacitor module and generating a driving current under the control of a second power line to enable a light emitter to emit light. The pixel circuit, the display device and the driving method provided by the invention have the beneficial effect that through adopting a charging-type threshold extraction mode, good compensating effect on both positive and negative threshold voltages can be achieved; and through adopting a centralized compensation plus dispersed compensation method, the circuit can be applied to a high definition or high frame rate display device without adding a peripheral drive circuit module.

Disclosed are methods and apparatus for improvements to image capture and analysis for vision detectors. The improvements provide for asynchronous capture and analysis and allow high frame rates to be maintained when image analysis may under certain conditions comprise a significantly longer time interval than image capture. The improvements prevent memory buffer overflow and provide for short and predictable decision delays even though an arbitrary and potentially unlimited number of images are captured and analyzed for each object.

Changes in tissue stiffness have long been associated with disease. Systems and methods for determining the stiffness of tissues using ultrasonography may include a device for inducing a propagating shear wave in tissue and tracking the speed of propagation, which is directly related to tissue stiffness and density. The speed of a propagating shear wave may be detected by imaging a tissue at a high frame rate and detecting the propagating wave as a perturbance in successive image frames relative to a baseline image of the tissue in an undisturbed state. In some embodiments, sufficiently high frame rates may be achieved by using a ping-based ultrasound imaging technique in which unfocused omni-directional pings are transmitted (in an imaging plane or in a hemisphere) into a region of interest. Receiving echoes of the omnidirectional pings with multiple receive apertures allows for substantially improved lateral resolution.

A method of one aspect may include monitoring movement of a scanning beam image acquisition device. Images may be acquired with the scanning beam image acquisition device using a first image acquisition mode when the monitoring indicates that the scanning beam image acquisition device is moving. Images may be acquired with the scanning beam image acquisition device using a second image acquisition mode when the monitoring indicates that the scanning beam image acquisition device is substantially still. The second image acquisition mode is different than the first image acquisition mode. In one aspect, the first mode has a relatively higher frame rate and relatively lower number of lines of image resolution than the second mode.

The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.

The embodiments of this invention use a multi-point scanning geometry. This design maintains the high frame rate of the slit-scan system and still allows both grayscale and multi-spectral imaging. In a confocal configuration, the multi-point scanning system's confocal performance is close to that of a single point scan system and is expected to yield improved depth imaging when compared to a slit-scan system, faster imaging than a point scan system, and the capability for multi-spectral imaging not readily achievable in a Nipkow disk based confocal system.

The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.

A system for producing an image using an imaging system includes a) transmitting at least one signal of energy toward an object to be imaged by using two transmitters having the same output amplitude but of an opposite sign, or by using one transmitter to perform the task; b) exciting at least one transducer element to produce limited-diffraction array beams or their square-wave approximations with two levels of quantitations for both sine and cosine functions, c) weighting the received signals spatially with limited-diffraction array beams, their square-wave approximations, or spatial Fourier transform, and d) digitizing and then transferring received signals through high-speed optical fibers to a system for image reconstructions.

The present invention provides methods and systems for scanning an illumination spot over a target area. The present invention removes stored energy from a scanning element to stop the scanning element from vibrating and to substantially return the scanning element to its starting position so as to enable high frame rates.

A video signal converting apparatus and method for improving display quality of video signals from both film source and video source. It is discriminated whether the input video signal is an interlaced video signal or not, and it is discriminated whether the input video signal is a video signal from a film source based on a film. If the input video signal is discriminated as interlaced video signals, the input video signal is converted, for outputting, to the progressive video signals by a converting method in accordance with a discrimination result regarding whether the input video signal is a video signal from the film source or not. The converted progressive video signal is converted, for outputting, to a video signal having a high frame rate in accordance with the discrimination result regarding whether the converted progressive video signal is a video signal from the film source or not. If the input video signal is not discriminated as an interlaced video signal, the input video signal is converted to a video signal having a high frame rate in accordance with a discrimination result regarding whether the input video signal is a video signal from the film source or not.

A motion estimation process in video coding takes into account the estimates in the immediate spatio-temporal neighborhood, through an adaptive filtering mechanism, in order to produce a smooth and coherent optical flow field at each pixel position. The adaptive filtering mechanism includes a recursive LMS filter based on pixel-wise algorithm for obtaining motion vectors in a reference image of a video image frame, while consecutively scanning through individual pixels of the image frame. This motion estimation process is particularly well suited for the estimation of small displacements within consecutive video frames, and can be applied in several applications such as super-resolution, stabilization, denoising of video sequences. The method is also well suited for high frame rate video capture.