83 results about "Videokymography" patented technology

The invention discloses a kind of method of measurement the solid particle three-dimensional density field in the gas and solid two phase flow, velocity field and equipment. The particle flux transmitting tube is laid at the front of high rate stereoscopic vision system which is consisted by the double look-out angle lens stereoscope and the high rate camera and the jet stream particle is refracted through the double look-out angle lens stereoscope mirror face and the single high rate camera target area can achieve the particle flux graphic with two different angles at the same time and after the graphic is input the computer a program module which is consisted by the pattern recognition algorithm procedure and three-inversion projection algorithm procedure treats the particle diagram and then get the transient three-dimensional density field. The program module treats series microsecond class time sequence changeable particle graphic and gets the particle three-dimensional movement trace and the velocity field. It is stabilize by using the single camera system and overcomes the problem of multiple camera system's constructer is complex and the synchronism is bad.

The present invention discloses an information recording device and an information recording method capable of effectively recording the state around a user. The change sensor 4 maps the three types of biological information measured by the biological information sensor 2, namely heart rate, GSR (galvanic skin response) and skin temperature difference, as observation values ​​to a three-dimensional feature space, and generates categories in the three-dimensional feature space. The change sensor 4 compares the category to which the newly measured observation value belongs with the category to which values ​​measured in the past belong, and when the categories are different from each other, a change in the user is detected. When the change sensor 4 detects a change, the controller 12 activates the video camera 5, the camera 6 and the microphone 7 to record images and sounds around the user.

It is possible to display only landmark information desired by a user among the landmark information transmitted from a map server. An imaging device (102) includes: an imaging unit (114) which captures a digital image; a communication unit (112) which acquires a plurality of additional information from a predetermined map server (120) holding a plurality of additional information corresponding to respective objects contained in the digital image captured by the imaging means; a display information extraction unit (113) which selects additional information to be displayed, from the plurality of additional information acquired by the communication unit (112); and a duplicate display processing unit (116) and a display unit (117) which display the digital image captured by the imaging meanstogether with the additional information selected by the display information extraction unit (113) among the plurality of additional information.

The invention relates to a gas-liquid two-phase flow pattern recognition method based on digital image processing technology, which is characterized in that the method uses a high-speed camera to gain the gas-liquid two-phase flow image in a horizontal pipeline under the different working conditions; the characteristics of invariant moment and gray level co-occurrence matrix of the image are extracted by the image processing technology; the characteristic fusion is implemented by using a rough set theory to reduce the characteristic dimensions, and the characteristic vector forms a flow pattern sample to implement the training for a support vector machine in order to complete the mapping from the characteristic space to the flow pattern space and finally realize the flow pattern recognition. The adopted rough set theory fuses image texture information and shape information, improves the recognition precision of a classifier, simultaneously reduces the training time, and can roundly reflect the characteristics of flow pattern image; the dependent degree and the generalization capacity of the flow pattern recognition method of the support vector machine for the sample data are better than the BP neural network; the invention has the shorter training time, and is applied to the flow pattern online recognition.

The invention discloses a virtual simulation method and system of a camera motion control system in film shooting, and belongs to the technical field of camera control. The method and the system cause a film creator to more visually regulate the motion track and the picture sequence of the camera according to own operation habits and visual angles, picture planning and the like in the early stage of film shooting, utilizes three-dimensional virtual simulation to design a satisfactory lens effect for the creator, automatically calculates the parameters of the camera motion control system which plans to be adopted, and precisely controls the space coordinates of the camera lens so as to improve the interaction of the camera motion control system, save the shooting cost of the lens which uses the camera motion control system and greatly improve the digital manufacture quality and efficiency of the film.

The invention discloses an image distortion standardization method which is not related to a photo equipment. The method has following steps as: a straight goal line is selected in the image of a photo to be standardized; a starting point A, a midpoint B and an end-point C are respectively selected out on the goal line; the photo coordinates of three pixels (xA, yA), (xB, yB), (xC, yC) are measured, by which a distortion type is calculated. An enough large radius vector delta rb is given to the midpoint B to make the three corrected points A', B' and C' have the opposite distortion type. An assumed image distortion factor is calculated according to the assumed distortion radius vector. According to the assumed image distortion factor, the radius vectors of the three positions A', B' and C' of the three points A, B and C after the distortion is eliminated are calculated. The pixel coordinates of the three positions A', B' and C' after the assumed image distortion is eliminated are calculated. By utilizing a split-middle method, an iterative approach computation is made to get the image distortion factor k1. The method of the invention takes a digital image as a standardization target, breaks away from a camera to calibrate the distortion factor of the digital image (including the historical image and the image in a network transmission, etc.) obtained in various channels.

The invention discloses a dental X-ray three-dimensional imaging system and a corresponding three-dimensional imaging method, and aims at reconstructing a three-dimensional dental model image from a two-dimensional panorama dental X-ray image. The system comprises a host gantry frame, an X-ray generator head, an X-ray detector, a laser positioning device, an attaching sign, a chair, a chair riser, a chair rotating device, an image processing computer and an operation and display panel. The method comprises: (1) teeth are carried out with panoramic X-ray imaging by rotating the chair; (2) pre-imaging process is carried out with the image processing computer; and (3) the three-dimensional image is reconstructed with the image processing computer. The system and the method take a digital panoramic camera regularly used in dental operation as the main part to realize the optimal cone-typed beam three-dimensional image reconstruction by integrating the optical laser positioning device. The system is characterized by high safety and precision, convenient operation, clear and fine picture, good practicability and durability, etc.

The invention relates to a movable object detection device adopting light tail analysis and a method thereof. The device comprises four modules as an image picking, an image calibration, pixel searching and movable object selection modules. The invention can continuously pick up images when the background of the camera is movable and stable, according to the input adjacent images, estimate the image correlation of the adjacent images, estimate a calibration conversion parameter of the adjacent images and according to the calibration conversion parameter, calibrate the background area of the adjacent images to calculate a calibrated front image. After the calibration, the invention tracks the displacement vector of corresponding pixels of each pixel in the adjacent images and combines the information generated by light tail track, to stably and correctly judge the position of the movable object in the image. The invention is not interfered by noise error and can be applied for detecting the movable object of a movable or fixed camera platform.

Present invention refers to size variable touch system based on image recognition. It utilizes a length fixing or alterable rod, respectively installing two cameras on two ends of said rod, two camera viewing field forming overlapping on touch interval constituting a rectangular zone of vision using two camera as neighboring vertices and covering touch interval, two cameras direct coupling to host computer through USB 1394 etc high-speed serial buses, camera collected image data sent to host computer, relevant driving program proceeding image recognition, when identifying user's fingertip or what other similar touch indicator, utilizing coordinate transformation algorithm to determine indicator relative position on touch surface.

According to one embodiment, an image processing apparatus and an image processing method includes a processed image generation unit, a provisional detection unit, and a final detection unit. The processed image generation unit generates a processed image for detection processing from an image around a vehicle taken by a camera provided on the vehicle. The provisional detection unit scans a scanning frame of a predetermined size according to a detection target object on the processed image, and detects a plurality of position candidate regions of the detection target object within the processed image by determining a feature value for respective scanning positions using a dictionary of the detection target object. The final detection unit determines an overlapping region of the plurality of position candidate regions, and determines a final detection position of the detection target object within the processed image based on the overlapping region and the plurality of position candidate regions.

The invention relates to a camera device and a method for dynamically detecting a monitoring object by using the same. The method comprises the following steps of: acquiring images of the monitoring object, which are continuously shot by a camera of the camera device; detecting moving objects in the acquired images; when the moving objects are detected, acquiring moving data of the camera device according to the moving data of the moving objects; and controlling the camera device to move on a track system according to the moving data of the camera device. With the adoption of the method provided by the invention, the camera device can be automatically controlled to move on the track system according to the moving of objects in the monitoring object.

The invention provides a front projection control method which is applied to a front projection device. The device is connected to a camera. The method comprises the following steps of: setting three gestures, wherein each gesture corresponds to an operation key of a mouse; when an opened file is projected to a projection curtain, and receiving scene images of a file interpreted by a user of the camera; identifying whether the gesture of the user in the scene image is same as a set gesture or not; when the gesture identified in the scene image is the same as the set gesture, tracking the tip of an index finger of the user; and projecting a vernier at the tip of the index finger of the user, and executing the function of the operation key of the mouse corresponding to the set gesture according to the identified gesture. The invention further provides the front projection device. By the method and the device, the functions of various operation keys of the mouse can be simulated.

The system comprises assorted lens, image catching card for catching digital image of the object to be catched by CCD video camera. The catched image is decomposed of by image brightness-reflectance decomposition unit to be two parts of spectrums as brightness and reflectance and image brightness variation detecting unit is provided to analyse bright ness spectrum variable of two continuous images as well as to use this variable to control the enlarging or reducing of the iris diaphragm. In addition, object motion detecting unit is provided to analyse reflectance spectrum variable of two continuous images, which is used to judge whether object in image picture is moved or not in order to have correct judgement for state of the object motion.

The invention provides an adjustable optical photographing palm print image acquisition device which belongs to the optical photographing acquisition device. The device comprises a sealed box body which is divided into three layers, wherein the upper layer is for placing a palm, the middle layer is for placing a light source, a camera and a position adjusting mechanism of the light source and the camera, and the lower layer is for placing a power supply, a graphic acquisition card as well as electronic equipments like a light source brightness control regulating circuit, etc. A light source holder positioning plate is arranged between the middle layer and the lower layer, a plurality of light source holders perpendicular to the bottom surface of the box body are fixed on the light source holder positioning plate, each light source is a telescopic tube and is provided with a socket on the top end for assembling the light source. The invention provides a fully closed or half opened photographing environment, the number, position, angle and brightness of the light sources can be regulated independently, and the position of the camera can also be finely regulated, thereby obtaining high quality palm prints meeting various requirements.

The invention provides a camera and a control method thereof. The camera comprises a memory, a driving unit, a lens and a control unit, wherein the memory is used for storing a three-dimensional human-like image and a three-dimensional human face image; the control unit is used for comparing and analyzing a scene image shot by the camera with the stored three-dimensional human-like image as well as detecting a three-dimensional human-like region in the scene image; the driving unit is used for driving the lens to correspondingly move, adjust the focal length and shoot to obtain a distinct three-dimensional human-like image; the control unit can be also used for comparing and analyzing the distinct three-dimensional human-like image with the stored three-dimensional human face image as well as detecting a three-dimensional human face region; and the driving unit is used for driving the lens to correspondingly move, adjust the focal length and shoot to obtain a distinct three-dimensional human face image.

The invention relates to a touch screen man-machine interactive system based on laser projection. The existing touch system based on filament lamp light source projection technology and combined with infrared mapping basically realizes man-machine interaction on a large screen, but no touch system used for laser back projection exists currently; the touch screen man-machine interactive system solves the problems that the existing touch system has a complicated structure, is not bright in color, insufficient in brightness, short in the service life of a bulb, and needs an additional infrared source, and the like; the touch screen man-machine interactive system comprises a red, green and blue (RGB) color laser light source, a laser speckle restraining module, a projection display module, a time sequence control circuit, a lens, a minicam and a projection screen; the touch screen man-machine interactive system does not need an additional infrared source, has a simple structure, high stability and is light and small equipment applicable to the man-machine interaction in museums and home entertainment; and in addition, after the minicam is shutdown and the projection display module and the time sequence control circuit are adjusted, the touch screen man-machine interactive system can also be used for displaying general movies and videos, and has good compatibility.

The invention discloses a video radar display system, which comprises a camera array, an image processing unit and a display unit, wherein the camera array is provided with a plurality of cameras so as to shoot a plurality of images in different directions; the images of the camera array are received by the image processing unit so as to conduct object identification; the environment is rebuilt through referring to an object data base so as to produce object display information; the object display information is received and a single image picture is displayed by the display unit; the cameras can be twin-lens cameras or tri-lens cameras which are used for producing binary images with distance parallax or images with height parallax; and the images are respectively provided for a computer system to judge the distance or the height of an object. Therefore, the complexity of a displayed picture can be simplified, and the video radar display system is very suitable for providing information for automobile drivers, plane operators or security monitoring units for reference, so as to conveniently judge the surrounding environment.

The invention relates to a cursor positioning method of a hand-holding camera. A camera which is attached to a hand-holding device is used for shooting continuous images, so as to sense the movement of the hand-holding device and ensure that a cursor in a computer menu produces relative displacement. Mainly, the camera is arranged in the hand-holding device (such as a laser director) to shoot the continuous images at the field scene; image data is transmitted to a computer at real time; the computer selects a most obvious characteristic point in an image no. N and records the position in the image; then the computer searches the characteristic point in an image no. (N+1); if same characteristic point is found, the computer judges the movement of the hand-holding device according to the position changes of the characteristic point in two images and ensures that the cursor produces the relative displacement further; if the same characteristic point in the image no. N can not be found in the image no. (N+1), the characteristic point is given up; the characteristic point is reselected in the image no. (N+1), and the new characteristic point is contrasted in an image no. (N+2) again.

Said invention refers to photograph controller and method for high brilliance object. When part area in shot object existing high brilliant light source, said invention can detects and control any area of light source, in order to prevent the reducing of aperture open and can normally display the main object in other areas of video image. Said invention can greatly raises monitoring function.

The invention provides a camera adjustment system and method. The camera adjustment system is arranged in a handheld electronic device. The camera adjustment system comprises a speed sensor, an electronic compass, a comparison unit and a display unit, wherein the speed sensor and the electronic compass are used for sensing the real-time displacement information of the handheld electronic device; the comparison unit is used for comparing the real-time displacement information with the initial displacement information of the handheld electronic device when the camera adjustment system is started, and further, the difference of the real-time displacement information of the handheld electronic device relative to the initial displacement information is obtained, and the difference is converted into a corresponding mobile control signal transmitted to a camera; the lens angle of the camera is adjusted according to the mobile control signal; and a shot image is transmitted to a display screen to be displayed.

The invention discloses an HIFU damage shear wave elastic characteristic estimation method based on LK optical flow. A damage formation and vibration continuous image is obtained with a high-speed camera when HIFU acts on tissue phantom, a vibration displacement curve of damage is obtained with the Lucas-Kanade optical flow method of an image pyramid, the propagation speed of acoustic radiation force shear wave generated on damage under the action of HIFU is calculated with the time-to-peak (TTP) method, quantitative estimation of shear elasticity modulus of damage can be conducted according to the relation among medium density, shear wave velocity in medium and medium shear elasticity modulus, and then the elastic characteristic of target tissue during treatment is monitored in real time and treatment effect is evaluated.

The invention provides a three-dimensional image acquisition system. The LED light source and the camera which are mutually spaced are arranged on the bracket which is arranged around the photographedobject; a polarizer is mounted on the camera; the polarization angle of the polarizer is adjusted, the three-dimensional image acquisition system can shoot a set of shot object three-dimensional photo data with left-handed circularly polarized light and a set of shot object three-dimensional photo data with right-handed circularly polarized light; the obtained two sets of photo data are importedinto image-based modeling software to carry out texture and polygon modeling; a set of non-highlight texture images and a set of highlight texture images can be obtained; the specular texture image can be obtained by taking the highlight texture image as the normal image and taking the non-highlight texture image as the diffuse image according to the formula of normal-diffuse=specular, so that themanufacturing period is greatly shortened, and the labor cost is reduced.

A real time image identifying method of passive and interactive mode includes projecting image by projection device to set up 8bits grey level fixed background image being used as reference image, utilizing video camera to continuously pick up real time 8bits grey level image and reference image from image region projected out by said projection device then carrying out image subtraction and image binaryzation operation for enabling to quickly and accurately identify out activity of movable object.

A photographic type pointer positioning control device (200)for controlling the positioning of a pointer on a display (100)screen by means of photographing the display screen (100)with a video camera (230)and then processing the video signal thus obtained through an image out-line and recognition processing process and then computing the processed data through a computing unit into (240)a coordinate value corresponding to the aimed point of the video camera (230)at the display screen (100).

The invention relates to a control system and method for a camera device. The method comprises the following steps: controlling a computer to obtain an image shot by a camera; utilizing an eyeball detecting technique to detect an eyeball area in the obtained image, comparing the detected eyeball area with a preset eyeball sample according to the height of the detected eyeball area and a coordinate value of an eyeball position, and obtaining a matched eyeball sample; and obtaining a preset control instruction corresponding to the matched eyeball sample and sending the control instruction to the camera device, thereby adjusting a shooting position of the camera device, a lens angle and a focal length. The control system can be utilized to automatically control the camera device to move on a track system according to the eyeball state and position change of a monitor.

The invention relates to an oblique photography system, which comprises a photography main body provided with several cameras and a mounting plate and a remote sensing platform for carrying the photography main body. The mounting plate is provided with a plurality of mounting sub plates, wherein every two planes where the mounting sub plates are located intersect with each other. The cameras are mounted on the mounting sub plates. The cameras have the shooting speed of 30 frames or above per second, image data with a larger overlap degree is obtained after the video data is divided into frames, the field angle of the cameras is wider, and a wider range of data can be shot, which can reduce the loss of information in the real-scene three-dimensional generation. The application of the oblique photography system can greatly reduce manual repair work and make later processing faster.