576 results about "Stabilization methods" patented technology

A method of Digital Image Stabilization (DIS) including a feature point sorting algorithm for selecting optimal feature points, and a computationally efficient tile-vector based search algorithm for deriving motion vectors of the selected feature points, and a feature point motion vector grouping/comparison process for grouping pairs of the selected feature points based on their vector magnitude ratio and their angular difference.

A Digital Image Stabilization method including selecting a Principal transform representing a stationary/background object in the scene of a video frame, based on scoring each of a plurality of transforms of tile motion vector (Tile MV) groups and of feature point motion vector (FP MV) groups, and excluding large moving objects based on the history of the stationary (background) group and the history of each of the plurality motion vector groups.

A video stabilization method. First, optical flows between successive frames are calculated. The camera motion is then estimated by fitting the computed optical flow field to a simplified affine motion model with a trimmed least square method. Then, the computed camera motions are smoothed to reduce the motion vibrations by using a regularization method. Finally, all frames of the video are transformed based on the original and smoothed motions to obtain a stabilized video.

Methods, systems and apparatuses are provided for torsionally stabilizing a spinal motion segment. One or more implants are placed between two vertebrae to provide torsional stabilization. In particular, one or more implants may be fixed between a superior vertebral body, such as at the spinous process, and an inferior vertebral body. The implants may be connected to the superior vertebral body using a fixation device such as a turnbuckle, an outrigger, a thimble, an endobutton, a suture plug or combinations thereof. The implant may also be connected to the inferior vertebral body using various types of hardware, including staples, screws and anchors. The implant may be kept in tension to provide torsional stabilization and may be comprised of one or more sutures. A multi-functional instrument having one or more arms having holes can be used to clamp onto the superior vertebral body and guide one or more implants to various locations for fixation in accordance with the methods described herein.

A method for stabilizing a dilute peracetic acid solution containing less than about 5 wt % peracetic acid by controlling the concentration of hydrogen peroxide and the mole ratio of hydrogen peroxide to acetic acid and by introducing a stabilizer to provide sequestering activity. The method is particularly useful for the long-term stabilization of dilute peracetic acid solutions. Stabilized dilute peracetic acid solutions are also within the scope of this invention.

Compound spinal rods function as part of the dynamic stabilization prosthesis to provide load sharing with motion preservation as part of a dynamic stabilization prosthesis. Compound spinal rods are used to span from one vertebra to an adjacent vertebra. Compound spinal rods include a first rod connected by a linkage to a second rod. The linkage allows for movement of the first rod relative to the second rod. The movement permitted by the compound spinal rod is designed to enhance the ability of a dynamic stabilization prosthesis to more closely approximate the natural kinematics of the spine without impairing stabilization of the spine.

A resource load balancing method concretely relates to content copy based resource load balancing method and an automatic distribution type resource monitoring structure. The method comprises: dynamically copying content of resource starting from every independent resource storage center node according to resource access condition of local node and information of resource storage center, selects a proper resource storage node for copied resource, at last accomplishes load balancing for resource. The resource storage center information such as bandwidth, magnetic disc space and credit needed by load balancing are collected and stored in monitoring information database of global hot spare management center by distribution type resource monitoring script program.

A method for treating back pain by stabilizing the sacroiliac joint. The method includes fusing a sacrum bone to an ilium bone or otherwise mechanically immobilizing the sacroiliac joint by inserting at least two implants into voids formed within or between the articular surfaces of each sacroiliac joint of a patient without substantially distracting the joint. The voids are arranged within each joint at either a converging orientation or a diverging orientation. A kit containing the implants and tools required to insert the implants into the joint are also described.

Methods and instruments for preparing a disc space and for forming interbody devices therein are provided. The instruments include distractors having enlargeable portions positionable in the disc space for distracting the disc space. The enlargeable portions can also provide form about or against which an interbody device of a first material is placed. A second material may be placed in the disc space in the space previously occupied by the distractors.

Methods and devices for static or dynamic spine stabilization include an anterior plating system that allows longitudinal and pivoting motion of the plates and of the stabilized vertebras. In one embodiment a spine fixation assembly for connecting a first vertebra to a second vertebra includes a first plate configured to be attached to one or more locations of the first vertebra and a second plate configured to be attached to one or more locations of the second vertebra. The first plate is pivotally connected to the second plate and may also allow longitudinal and/or horizontal motion of the plates relative to each other.

A process for the stabilization of metal bearing waste is provided that is based upon the discovery that landfills have anaerobic environments. This process includes adjusting the pH of the waste and adding a sulfide containing reducing agent to the waste to achieve a reducing environment. In one embodiment, electric arc furnace dust is stabilized for landfill disposal. Also provided is a method for a determination of landfilled waste leachability. This method is performed under conditions that simulate the chemical characteristics of landfills. In one embodiment, stabilized metal bearing waste is deoxygenated and a simulated leachate is prepared under anaerobic conditions.

A power system stabilization method includes: receiving a power command value from a power control center that monitors a power system; transmitting the power command value to a power supply device; causing the power supply device to supply power to the power system according to the power command value; generating a prediction command value according to past power command values received from the power control center, the prediction command value being a prediction value of a power command value to be transmitted from the power control center next after the power command value; transmitting the prediction command value to a power supply device; causing the power supply device to supply power to the power system according to the power prediction command value; receiving the next power command value from the power control center; transmitting the next power command value to the power supply device.

Methods and systems for stabilizing an on-screen code on a display of a mobile device are described. A code is displayed on a mobile device as an on-screen code. The user holds the mobile device in front of a code scanner so that the on-screen code can be scanned. A code stabilization application on the mobile device assists in stabilizing and/or centering the on-screen code through changing its position, shape, and/or size based on data and/or measurements from sensors. The code stabilization application stabilizes the on-screen code for easy scan-ability to speed up the scanning process.

A two-stage laser stabilization method is described to simultaneously servo two coupled laser parameters that control the wavelength of a laser, such as the laser injection current and the laser temperature, in order to simultaneously stabilize the laser frequency and output power. Two error signals are generated by passing the laser light through a frequency discriminator, such as an atomic resonance, to generate two control loops for the two coupled laser parameters. A primary control loop servos the faster laser parameter, such as the laser injection current, by direct use of the error signal. A secondary slower control loop ensures that this said error signal will remain at zero, by controlling the second laser parameter, such as the laser temperature.

The invention discloses an image stabilization method used for a video image and an image stabilization device thereof. The video image stabilization method comprises the steps that the video image acquired by an image acquisition module is acquired; the change of the attitude angle of the image acquisition module in acquisition of the video image is detected; attitude angle correction processing is performed on the video image by using the detected change of the attitude angle; the displacement between different image frames of the video image is detected; and displacement correction processing is performed on the video image by using the detected displacement.

The invention relates to a motion-estimation-based road video stabilization method, which comprises the following steps of: performing nonlinear smooth denoising on an input image; determining a characteristic searching range according to the requirements of a system on accuracy, and acquiring optimal characteristic information; performing cross grayscale projection on a template and a block to be matched, and finding an optimal matched area according to a difference; constructing a dynamic motion model in a recursion way by adopting a Kalman filter with a uniform motion equation, obtaining motion parameters of a camera for describing inter-frame motions caused by the motions of the camera, and identifying and filtering random jitter in an offset sequence obtained by motion estimation; and filling an area losing an image due to the video jitter, and reconstructing adjacent frames by adopting a hybrid Gaussian model and utilizing time relativity between image sequences.

The invention discloses a real-time video stabilization method based on a homography matrix and is used for stabilizing video sequences obtained by devices such as a handheld DV and an unmanned aerial vehicle. The method comprises the steps of A, extracting angular points uniformly distributed in images; B, calculating an interframe optical flow vector and tracking an interframe motion angular point through utilization of the interframe optical flow vector; C, calibrating the tracked angular point through utilization of a layered affine calibration algorithm; D, solving an interframe homography matrix through utilization of a random sampling unification algorithm; E, separating interframe active motion compensation quantity and distortion calibration quantity by employing a kalman filter; and F, carrying out stabilization conversion on one video image by employing the homography matrix, the motion compensation quantity and the distortion calibration quantity to obtain stabilized current frame output. According to the method, shake existing in the video sequences can be effectively removed, the algorithm complexity is relatively low, the operation speed is fast, and the high application value is provided for the real-time video processing system.

A decoder and a method for preventing and correcting a fluctuated image which occurs due to a user's fluctuated hand when recording using a mobile image communication system by adapting a digital image stabilization technique in a video decoder are provided. When decoding an encoded bit stream by the macro block unit, a motion information is extracted, and one global motion vector is determined using the extracted information. The global motion vector is directed to a motion of a mobile image communication system, and it is possible to obtain a stabilized image by correcting the decoded image data stored in a frame memory using the global motion vector. Since only the motion information is used in the encoded bit stream, a hardware construction is simplified. Therefore, the decoder is well adapted to compute a large amount of data.

The invention discloses a video image-stabilization method, a device and a terminal. The video image-stabilization method is used for the camera terminal; the camera terminal comprises a gyroscope; the video image-stabilization method comprises the following steps; acquiring gyroscope data of the gyroscope while shooting an image, wherein the gyroscope data is corresponding to each frame image; when the gyroscope data shows that the camera terminal is in shaking, extracting feature points of the current frame image; computing an adjacent transformation matrix by using the gyroscope data corresponding to the current frame image and the gyroscope data corresponding to the former frame image or using a feature point coordinate of the current frame image and the feature point coordinate of the former frame image, wherein the former frame image is the previous frame image of the current frame image; and transforming the current frame image according to the adjacent transformation matrix. The accuracy of the video image-stabilization is improved by using the technical scheme disclosed by the invention.

The invention discloses a chromium-contaminated soil remediation method, belonging to the technical field of environment engineering. The method comprises the following steps of: dissolving out hexavalent chromium in the chromium-contaminated soil, separating the soil from water, treating trivalent chromium-contaminated soil, treating hexavalent chromium sewage and treating filter residue; the dissolution efficiency of the hexavalent chromium in the chromium-contaminated soil can be improved by the KH2PO4 solution; the trivalent chromium-contaminated soil is treated by biochar made of municipal sludge, so that waste reclamation and secondary utilization of the contaminated soil can be realized; Na2S2O5 can be added into the hexavalent chromium sewage and is used for adjusting the reaction environment, so that the efficiency of converting hexavalent chromium into trivalent chromium can be improved; a flocculating agent is used for accelerating the precipitation and concentration of the trivalent chromium; the filtered water can be used as flushing water for recycling, so that the method is economical and environment-friendly; and a curing stabilization method is used for treating the filter residue, so that the chromium in the filter residue is passivated, and the national environmental standard requirements can be reached. According to the method, the hexavalent chromium and the trivalent chromium are respectively treated, and the solid and the solution are respectively treated, so that the treatment efficiency is improved, the treatment effect is guaranteed, and the method has the characteristics of being free from secondary pollution, low in cost, high in resource utilization rate, etc.