4508 results about "Acquisition apparatus" patented technology

A distortion corrected panoramic vision system and method provides a visually correct composite image acquired through wide angle optics and projected onto a viewing surface. The system uses image acquisition devices to capture a scene up to 360° or 4π steradians broad. An image processor corrects for luminance or chrominance non-uniformity and applies a spatial transform to each image frame. The spatial transform is convolved by concatenating the viewing transform, acquisition geometry and optical distortion transform, and display geometry and optical transform. The distortion corrections are applied separately for red, green, and blue components to eliminate lateral color aberrations of the optics. A display system is then used to display the resulting composite image on a display device which is then projected through the projection optics and onto a viewing surface. The resulting image is visibly distortion free and matches the characteristics of the viewing surface.

An image acquisition sensor of a digital image acquisition apparatus is coupled to imaging optics for acquiring a sequence of images. Images acquired by the sensor are stored. A motion detector causes the sensor to cease capture of an image when the degree of movement in acquiring the image exceeds a threshold. A controller selectively transfers acquired images for storage. A motion extractor determines motion parameters of a selected, stored image. An image re-constructor corrects the selected image with associated motion parameters. A selected plurality of images nominally of the same scene are merged and corrected by the image re-constructor to produce a high quality image of the scene.

A speaker array and microphone arrays positioned on both sides of the speaker array are provided. A plurality of focal points each serving as a position of a talker are set in front of the microphone arrays respectively symmetrically with respect to a centerline of the speaker array, and a bundle of sound collecting beams is output toward the focal points. Difference values between sound collecting beams directed toward the focal points that are symmetrical with respect to the centerline are calculated to cancel sound components that detour from the speaker array to microphones. Then, it is estimated based on totals of squares of peak values of the difference values for a particular time period that the position of the talker is close to which one of the focal points, and the position of the talker is decided by comparing the totals of the squares of the peak values of the sound collecting beams directed to the focal points that are symmetrical mutually.

An efficient method and system to enhance digital acquisition devices for analog data is presented. The enhancements offered by the method and system are available to the user in local as well as in remote deployments yielding efficiency gains for a large variety of business processes. The quality enhancements of the acquired digital data are achieved efficiently by employing virtual reacquisition. The method of virtual reacquisition renders unnecessary the physical reacquisition of the analog data in case the digital data obtained by the acquisition device are of insufficient quality. The method and system allows multiple users to access the same acquisition device for analog data. In some embodiments, one or more users can virtually reacquire data provided by multiple analog or digital sources. The acquired raw data can be processed by each user according to his personal preferences and/or requirements. The preferred processing settings and attributes are determined interactively in real time as well as non real time, automatically and a combination thereof.

In order to characterize the optical characteristics of a device, a source of light having a variable frequency with a polarization state which varies linearly with frequency is provided as an input to the device under test. The input light is also passed through a known reference path and is added to the light output from the device under test in a beam combiner. The combined light for the frequencies of interest is split into two orthogonal polarizations which are then detected in a spectral acquisition apparatus and supplied to a microprocessor. The spectral measurements are digitized and curve-fitted to provide optical power versus optical frequency curves. Fourier transforms of each of the curves are calculated by the microprocessor. From the Fourier transforms, the four arrays of constants are calculated for the Jones matrix characterizing the device under test.

The invention discloses an ATM security certificate and a pre-warning method based on face recognition. The invention introduces face recognition and video detection into the applications of ATM and bank card business for the first time, which can obviously improve the security of ATM financial system, effectively reduce and overawe various ATM fraud and criminal activities. The complete system operation process in the method of the invention is: firstly, registering the face information of a holder at a service window which arranges an infrared face acquisition equipment or with the registration by the users themselves on ATM in bank, and saving the encrypted face information to a bank database and a bank card. Then, determining whether the ATM operator to be recognized is the holder of the bank card or not through verifying the user's identity by a face recognition engine; determining and recognizing whether existing behaviors that threaten ATM and the users though a behavior monitoring engine; and determining whether to trigger corresponding pre-warning mechanism or not according to the recognition result. The invention can extend to the applications of bank book business, public security monitoring and pursuing escaped criminals, etc.

A 3D image acquisition apparatus comprises a pattern projection section which projects a pattern on an object to be measured, an imaging section which is disposed at a distance from the pattern projection section and images the object on which the pattern has been projected, and a depth calculation section which detects the projection pattern projected on the object on the basis of an image acquired by the imaging section, collates the detected pattern and the projected pattern, and calculates a depth of respective parts of the object on the basis of the correspondency of the collation. The projected pattern is stripes/matrix formed by alternately arranging areas with local maximum/minimum luminance values. Thus, stripes/matrix boundaries can be exactly extracted from the pattern projection image, and correct decoding is performed from the encoded projection image even where the object is not a white-based color one or a low-saturation color one.

Certain embodiments of the present invention provide a method and system for improved registration of image and navigation references used in image-guided operations. Certain embodiments of the system include an image acquisition device for obtaining at least one image of an object, a first calibration fixture positioned in relation to the image acquisition device, and a second calibration fixture positioned in relation to the object. The position data from first calibration fixture is used to form a characterization of the image acquisition device, which is corrected by position data from the second calibration fixture. In an embodiment, a first calibration fixture is affixed to a C-arm camera and a smaller second calibration fixture is affixed to a patient. Data from the first and second calibration fixtures is used with tracking data to calibrate the image acquisition data and register reference points in image and navigation reference frames.

The embodiment of the invention provides a system, a method and an apparatus for remote representation, the system comprises: a plurality of displays for displaying remote images; an audio output apparatus for outputting information of a remote audio; a multimedia communication terminal for processing and controlling locally- and remotely-obtained audio/video information; a plurality of video cameras for taking local video images and sending the taken video images to the multimedia communication terminal for being processed; an audio acquisition apparatus for acquiring local audio information and sending the acquired audio information to the multimedia communication terminal; and a plurality of user locations that are corresponding to the plurality of video cameras one by one and have an approximate vertical relationship with respect to optic axes of cameras of the plurality of video cameras, respectively. Using the inventive technical proposal solves the problems of lacking consistence of conference experience and poor experience effect in multimedia communication.

A medical imaging system generates 3D anatomical images from acquired 2D anatomical images. The system includes a synchronization processor for providing a synchronization signal identifying a particular phase of heart operation of a particular patient. An image acquisition device acquires 2D anatomical images of a patient heart in angularly variable imaging planes over multiple different heart cycles at the particular phase of heart operation in response to the synchronization signal and in response to recorded data indicating imaging previously being performed at particular imaging plane angles. An image processor stores the recorded data to prevent imaging overlap at the particular imaging plane angles and to prevent unnecessary radiation exposure of the patient. The image processor processes 2D images acquired by the image acquisition device of the patient heart in multiple different imaging planes having relative angular separation, to provide a 3D image reconstruction of the patient heart

The invention discloses a real-time facial animation method based on a single video camera. The method includes the steps of using the single video camera, tracking three-dimensional positions of facial feature points in real time, parameterizing face posture and facial expression according to the three-dimensional positions, and finally mapping parameters on a substitute so as to drive facial animation of a cartoon character. A real-time speed can be reached only with an ordinary video camera of a user without need of an advanced acquisition device. The real-time facial animation method based on the single video camera can accurately process various wide-angle facial rotations, facial shifting and various exaggerated facial expressions and can further work in the environments with different illumination and background conditions, including indoor environment and sunny outdoor environment.

The invention discloses an intelligent express mail sending access system and solution scheme based on Internet of things and a two-dimensional code technology. The intelligent express mail sending access system provided by the invention is realized in such a way that the intelligent express mail sending access system is composed of a user mobile phone, an equipment host, a system background server, a courier hand-held terminal and an express delivery carrier background server, wherein the equipment host comprises a mainframe box, a power source, a touch screen control apparatus, a video image acquisition apparatus, a two-dimensional code reading apparatus, an identity card information acquisition apparatus, a printing/sealing apparatus, a weighing apparatus, an information display apparatus, and an industrial control PC which is connected with the aforementioned function parts and the background server and has equipment control, instruction execution, information interaction and storage functions.

The invention relates to an intelligent advertising system having functions of audience characteristic perception and counting and belongs to the technical field of computer vision. The system consists of a camera, computing equipment and an electronic advertisement screen provided with a memory, wherein the camera is responsible for acquiring an image and sending acquired image information to the computing equipment; and the computing equipment is a computer or an embedded microcomputer system which is responsible for performing processing and an operation on the image acquired from acquisition equipment and controlling the electronic advertisement screen according to an operation result so as to realize the memorizing, the displaying, the playing and the switching of an advertisement content. The system provided by the invention is simple in structure, low in cost and convenient in operation, so that the problem that the conventional billboard performs only one-way pushing without consideration of the information of current advertisement audiences is solved; the value of the billboard relative to other billboards can be obtained according to the function of counting, and extremely referable data is provided for an advertiser; and the speed and the correction rate of face detection and face tracking are improved by utilizing a background modelling technology.

Provided are a rolled fingerprint acquisition apparatus and method for automatically detecting the start and end of registration and synthesis to acquire an accurate fingerprint. The rolled fingerprint acquisition apparatus compares at least one of fingerprint characteristic information and the amount of variation between the fingerprint characteristic information to reference fingerprint characteristic information to determine whether to start or end registration and synthesis, wherein the fingerprint characteristic information is information about fingerprints included in rolled fingerprint frames that are sequentially acquired, and registers and synthesizes the rolled fingerprint frames according to the result of the determination.

Provided are a three-dimensional (3D) image acquisition apparatus, and a method of generating a depth image in the 3D image acquisition apparatus. The method may include sequentially projecting a light transmission signal, which is generated from a light source, to a subject, modulating reflected light, which is reflected by the subject, using a light modulation signal, calculating a phase delay using a combination of a first plurality of images of two groups, from among a second plurality of images of all groups obtained by capturing the modulated reflected light, and generating a depth image based on the phase delay.

The invention provides a radioactive source on-line monitoring system based on an Internet of Things technology. The radioactive source on-line monitoring system comprises RF (radio frequency) cards, field monitoring terminals, a transmission network and an on-line monitoring informatization management platform, wherein the RF card is fixedly arranged in each monitoring site with a preset distance from a radiation source, unique identity information of a radiation source, approved geographical position information and the standard radiation dose rate are stored in the RF cards, each field monitoring terminal is arranged in the corresponding monitoring site, and comprises an RF card reader-writer, a radiation dose rate measuring instrument, video collecting equipment, a GPS (global positioning system) positioning device, a controller, an in-site warning device, a communication interface and a power supplying power supply, and the processor is respectively connected with the RF card reader-writer, the radiation dose rate measuring instrument, the video collecting equipment, the GPS positioning device, the field warning device, the communication interface and the power supplying power supply. The radioactive source on-line monitoring system has the advantages that the radiation source can be comprehensively monitored, then, through a communication network, the monitoring information can be remotely obtained in time, and the monitoring efficiency is effectively improved.

The invention discloses a projection-type billiard training system and an implementation method thereof. The system comprises a billiard table, an image acquisition apparatus, a billiard lamp, and a projection apparatus, wherein the head end of the image acquisition apparatus mounted in the billiard lamp is flush with the lower end of the lamp, and is suspended at a certain high position above the billiard table to be over against the center of the billiard table; and the projection apparatus is hung beside the billiard lamp and is controlled by a computer. The system implementation method comprises the following steps of: establishing a standard database of training courses and the related video files; reading the above data and files by selecting junior training course to senior training course when the system program runs, and displaying the desired images, such as demonstration video, auxiliary lines, ball positions, aim point and simulated motion trajectory of the cue ball and the target ball through the projection apparatus; and capturing shot video when training according to the video, inputting the shot video to the computer for analysis, and giving suggestions for the next shot by the image acquisition apparatus. The projection-type billiard training system is more scientific, accurate, intuitional and convenient in billiard training, thereby improving the shot accuracy and the cue ball control capability.

The invention discloses a chronic disease health management system and method. The system comprises a health monitoring and acquisition apparatus, an information acquisition and processing module, a management module, a terminal device and a real-time tracking and monitoring module, wherein the health monitoring and acquisition apparatus acquires health information of a chronic disease patient and generates health data; the information acquisition and processing module processes, analyzes and assesses the acquired health data and generates analysis and assessment result data of the chronic disease patient; a management scheme is generated through the management module and sent to the terminal device so as to perform intervention management on the chronic disease patient; and the real-time tracking and monitoring module tracks and monitors the health information of the chronic disease patient in real time, evaluates an intervention management feedback effect and continuously adjusts and perfects the management scheme. According to the system and method, effective management can be carried out for dangerous factors of chronic disease crowds and professionalized and personalized 8S health management schemes can be provided for chronic disease patients.

The invention relates to an identity authentication device adopting palmprint and human face fusion recognition, which comprises an image acquisition module, a main processing module and a memory module, wherein the main processing module further comprises a control unit which is electrically connected with the image acquisition module, a human face recognition unit and a palmprint recognition unit which are respectively connected with the control unit, and the memory module which is respectively connected with the human face recognition unit and the palmprint recognition unit. The image acquisition module is used for time-division shooting of biological characteristic images according to a command of the control unit and sending the shot biological characteristic images to the control unit, and the biological characteristic images comprise a human face image and a palmprint image. The control unit is used for sending the shot images to the corresponding human face recognition unit or the palmprint recognition unit for recognition and judging whether identity authentication passes or not according to the human face recognition result and the palmprint recognition result. The problem of needing two acquisition devices for performing double biological characteristic identity authentication is solved, the safety is high and the cost is low.