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77 results about "Deformity correction" patented technology

Method for correcting deformity and identifying image of go notation

The invention relates to a method for correcting deformity and identifying an image of a go notation in real time. The method includes the following steps: firstly, conducting the deformity correction on the image: fixing the positions of a go board and a camera, determining the coordinates of three hundred and sixty one piece placing points on the go notation image acquired by the camera and determining the size of a rectangle frame to be calculated in the identification of pieces; and secondly, the identifying the go pieces: acquiring one frame of grayscale image as foreground, conducting differential operation with a background image to obtain a difference image, calculating parameters such as the grayscale average value of an effective pixel in the rectangle frame of each piece placing point, the quantity of the effective pixels, and the like one by one in the difference image according to the coordinates of the piece placing points, comparing the parameters with a set threshold, then detecting go notation data such as the colors and the positions of the pieces as well as piece taking, piece falling and the like according to a current party placing the pieces and go board information, and then updating the background image to the foreground image. The method adopts an algorithm which is concise, correct and efficient, can adapt to a certain extent of illumination change and especially can be applicable to the identification of a go notation in real time under an embedded system.
Owner:BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV

Panoramic video stitching method and device

The invention discloses a panoramic video stitching method and device. The panoramic video stitching method is used for stitching video images acquired by front-end devices to be stitched into a panoramic video image through a client and comprises the steps of binding the front-end devices to be stitched into a resource group, acquiring four vertices of a stitched video image part of each front-end device so as to form a cut quadrilateral corresponding to each corresponding front-end device, calculating the deformity correction and conversion matrix of each front-end device according to the acquired vertices and a set standard rectangle, converting the video images acquired by all the front-end devices, and then, laying out the converted video images according to set position information, so as to form and display a panoramic video image. The panoramic video stitching device disclosed by the invention comprises a configuration module, a vertex acquisition and matrix generation module and a stitching module. According to the method and the device, disclosed by the invention, the deformity correction and conversion can be carried out by the front-end devices or the client so as to realize panoramic stitching, and the requirements on the performance of matrix conversion equipment are not high, so that the method and the device are particularly applicable to the upgrade and development of old items.
Owner:ZHEJIANG UNIVIEW TECH CO LTD

Temporomandibular joint deformity correction system and method for making personalized deformity correction device

InactiveCN107510511ANo changeGuide orthodontic treatmentOthrodonticsTemporomandibular jointSkull surface
The invention discloses a temporomandibular joint deformity correction system and a method for making a personalized deformity correction device. The method comprises 1, analyzing an occlusal function through an occlusion analysis system to determine an occlusion position, 2, preparing original upper and lower jaw models according to the occlusion analysis system and re-positioning an occlusion plate through patient wearing with the original upper and lower jaw models, 3, carrying out re-examination on the patient each month, 4, after re-examination, determining whether the occlusion position is correct and carrying out deformity correction, 5, stabilizing the occlusion position and carrying out a tooth arrangement test, and 6, producing the personalized deformity correction device according to the tooth arrangement model after the tooth arrangement test. Compared with the prior art, the system realizes personalized tooth arrangement through combination of an adjustable frame, function analysis and projective measurement analysis according to the patient's skull surface type, utilizes a covering material to precisely control the position of the occlusion position, prevents occlusion position change, evaluates the tooth movement amount in a visual state through 3D data scanning before and after tooth arrangement and provides good deformity correction treatment guidance for later treatment.
Owner:刘洋

Orthopedics department deformity correction and bone fracture reduction fixing device and processing method of fixing device

The invention discloses an orthopedics department deformity correction and bone fracture reduction fixing device and a processing method of the fixing device. The fixing device comprises an outer fixing frame or an outer fixing plate, wherein the outer fixing frame or the outer fixing plate is used for fixing needles inserted into the bone tissue, at least one end of the fixing needles is exposed out of the skin, in addition, the end part, exposed out of the skin, of the fixing needles is the end to be fixed, the outer fixing frame comprises a first fixing frame body and a second fixing frame body, the outer fixing plate is a fixing plate used for fixing all of the fixing needles inserted into the bone tissue to be fixed, and the outer fixing plate comprises one or several fixing plate blocks. The processing method comprises the following steps of image information collection before reduction, computer virtual reduction, fixing device structural design and fixing device processing. The fixing device provided by the invention has the advantages that the automatic reduction function is realized, the structure is reasonable, the fixation effect is good, and the defects of reduction deformity correction difficulty, surgery operation complexity, overdependence on the clinic experience of doctors and the like in the existing bone fracture reduction or deformity correction process can be effectively overcome.
Owner:乔锋 +1

Alignment Plate Apparatus and Method of Use

ActiveUS20130178863A1Facilitate fracture reductionCorrect deformityRadiation diagnostics testing/calibrationMeasurement devicesLeg lengthFracture reduction
A dimensioned grid apparatus for determining: 1) leg length, offset, and cup position during arthroplasty replacement surgery; 2) fracture reduction / correction position during trauma procedures and 3) an apparatus to be used for defomity correction planning is provided.
Owner:ORTHOGRID SYST HLDG LLC

Fixed-angle-rotation-center-parallel external fixator for malformation correction of shinbone

PendingCN112120772AAvoid problems such as difficult assemblyUniversalExternal osteosynthesisTibial boneExternal fixator
The invention relates to a fixed-angle-rotation-center-parallel external fixator for malformation correction of a shinbone. The external fixator comprises a proximal cycle, a distal cycle, a front branched chain and a rear branched chain, wherein the rear branched chain is composed of two side bars, a C-shaped ring and a short branched chain. The upper part of the short branched chain is connectedwith the C-shaped ring to form a first revolving pair, and the C-shaped ring is connected with the two side bars to form a second revolving pair. During the malformation correction, axes of rotationof the first and second revolving pairs are converged to an angle center of rotation of a malformed bone, and then, a center of rotation of the external fixator and the angle center of rotation of themalformed bone can be superposed, so that doctors can conveniently observe clinical conditions of the current malformation correction in real time, and radiation intake resulting from X-ray film photographing is reduced. According to the external fixator, rotating deformity of two degrees of freedom of the malformed bone can be corrected, shortened malformation along a bone axis direction can also be corrected, and then, the malformed bone can be subjected to two-rotation-one-moving spatial 3-degree-of-freedom malformation correction.
Owner:BEIJING UNIV OF TECH

Ankle-foot external fixation device for talipes equinus deformity correction

The invention relates to an ankle-foot external fixation device for talipes equinus deformity correction. The ankle-foot external fixation device comprises a movable platform, distal and proximal fixation rings, two linear motion branch chains, a fixed-point rotation branch chain and a plurality of needle penetrating devices. The needle penetrating devices connect the external fixation device witha patient, the two linear motion branch chains and the fixed-point rotation branch chain adopts the arrangement mode of parallel connection, the movable platform and the distal and proximal fixationrings are jointly connected, and by manually adjusting the motion branch chains and the fixed-point rotation branch chain, the movable platform can drive the feet of the patient to complete the deformity correction. Through the structure, the external fixation device can meet the demands of different patients, the movable platform only has three rotation degrees of freedom required for the talipesequinus deformity correction, in the deformity correction process, the rotation center of the movable platform always coincides with the motion center of the knee joint of the human boy, and the accuracy and safety of the deformity correction are ensured. The external fixation device is relatively simple in structure, and the operation complexity of physicians and the wearing difficulty of the patients are reduced.
Owner:BEIJING UNIV OF TECH
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