739 results about "Robot vision" patented technology

An apparatus and method to determine the surface orientation of objects in a field of view is provided by utilizing an array of polarizers and a means for microscanning an image of the objects over the polarizer array. In the preferred embodiment, a sequence of three image frames is captured using a focal plane array of photodetectors. Between frames the image is displaced by a distance equal to a polarizer array element. By combining the signals recorded in the three image frames, the intensity, percent of linear polarization, and angle of the polarization plane can be determined for radiation from each point on the object. The intensity can be used to determine the temperature at a corresponding point on the object. The percent of linear polarization and angle of the polarization plane can be used to determine the surface orientation at a corresponding point on the object. Surface orientation data from different points on the object can be combined to determine the object's shape and pose. Images of the Stokes parameters can be captured and viewed at video frequency. In an alternative embodiment, multi-spectral images can be captured for objects with point source resolution. Potential applications are in robotic vision, machine vision, computer vision, remote sensing, and infrared missile seekers. Other applications are detection and recognition of objects, automatic object recognition, and surveillance. This method of sensing is potentially useful in autonomous navigation and obstacle avoidance systems in automobiles and automated manufacturing and quality control systems.

The invention relates to the field of indoor navigation and discloses an indoor location method and an indoor location system. In the invention, vision road signs (artificial or natural road signs) are deployed in fixed indoor positions. During the location process, a movable robot photographs images from surrounding environment, wherein the images are subjected to pretreatment and character extraction. A characteristic image after the character extraction is matched with the road signs in a road sign character library to obtain a road sign which can be used for location in the image. Through a vision distance measurement scheme on the basis of the characteristic road sign, real-time location is carried to the movable robot. In the embodiment, with the vision road signs (passive road sign), the road sign itself does not emit a wireless signal and has low cost. Through the vision distance measurement scheme, only one road sign is required to deploy within in vision range of the robot, so that the method and the system need fewer road signs, thereby reducing deployment cost of indoor navigation.

The invention relates to one intelligent trace system and discloses one system to focus its upper load camera machine onto one or more aim objects through main infrared positioning in level and vertical dimensional angel to judge aim object and system distance. The invention identifies the different aim objects through infrared emission machines codes to compute cameral lens level and forward and focus parameters to drive relative servo work.

The invention discloses a visual real-time deviation rectifying system for a robot. The robot comprises a robot body (4) and an end tool (5) connected to the tail end of the robot body. The system comprises a visual module (3) and a robot controller (2), wherein the visual module (3) is electrically connected with the robot controller (2), and is used for acquiring target image information in real time, processing the acquired target image information so as to obtain position deviation information between the end tool (5) and a target, and sending the position deviation information to the robot controller (2); and the robot controller (2) is electrically connected with the robot body (4), and is used for generating a real-time servo command for controlling the end tool (5) according to the position deviation information from the visual module (3), and sending the servo command to the robot body (4) in real time so as to perform real-time deviation rectifying for the end tool (5).

Described is a robotic visual perception system for determining a position and pose of a three-dimensional object. The system receives an external input to select an object of interest. The system also receives visual input from a sensor of a robotic controller that senses the object of interest. Rotation-invariant shape features and appearance are extracted from the sensed object of interest and a set of object templates. A match is identified between the sensed object of interest and an object template using shape features. The match between the sensed object of interest and the object template is confirmed using appearance features. The sensed object is then identified, and a three-dimensional pose of the sensed object of interest is determined. Based on the determined three-dimensional pose of the sensed object, the robotic controller is used to grasp and manipulate the sensed object of interest.

The invention discloses a robot vision servo control method based on the image mixing moment. Firstly, construction of mixing moment features in one-to-one correspondence with space attitudes after target object imaging under the robot expected pose is given; and then a target object image is obtained under any attitude, the current mixing moment feature information value is calculated, the deviation of the mixing moment feature value is calculated according to information of an expected image and information of the current image, if the deviation is smaller than the preset threshold value, itis shown that the robot achieves the expected pose, if the deviation is not smaller than the threshold value, an image jacobian matrix relevant to the mixing moment features is deducted, a vision servo robot is used so that the robot can move towards the expected pose till the feather deviation is smaller than the preset threshold value, and the control process is over. By means of the robot vision servo control method, the image field mixing moment feature corresponding to the space movement track of the robot is introduced in to serve as the control input, vision servo control of a eye-in-hand robot system under the working space model unknown circumstance is completed, and the method can be widely applied to robot intelligent control based on machine vision.

The invention discloses a robot parallel polishing system which comprises a coarse polishing system, a refined polishing system, a base component, a system control cabinet, a pneumatic control cabinet, a robot vision self-positioning system, workpieces and a working table. The workpieces with large free curved faces can be coarsely and finely polished through the polishing systems at the same time, simultaneous polishing on the two same workpieces can be achieved, the polishing accuracy can be effectively guaranteed, and the polishing efficiency is improved. Before the robot parallel polishing system works, the polishing areas are divided by path generative software according to three-dimensional models of the workpieces, the polishing paths are generated, standards of the workpieces are rapidly and accurately demarcated through the robot vision self-positioning system, two industrial robots drive a pneumatic polishing head to conduct coarse polishing and refined polishing on the polishing areas according to the planed paths, the pneumatic mild force control technology, the normal polishing force control technology and the path real-time calibration compensation technology are adopted in the polishing process, and the polishing accuracy and the coincidence of the polishing quality are effectively guaranteed.

A scannerless 3-D imaging apparatus is disclosed which utilizes an amplitude modulated cw light source to illuminate a field of view containing a target of interest. Backscattered light from the target is passed through one or more loss modulators which are modulated at the same frequency as the light source, but with a phase delay δ which can be fixed or variable. The backscattered light is demodulated by the loss modulator and detected with a CCD, CMOS or focal plane array (FPA) detector to construct a 3-D image of the target. The scannerless 3-D imaging apparatus, which can operate in the eye-safe wavelength region 1.4-1.7 μm and which can be constructed as a flash LADAR, has applications for vehicle collision avoidance, autonomous rendezvous and docking, robotic vision, industrial inspection and measurement, 3-D cameras, and facial recognition.

The invention discloses a panoramic three-dimensional photographing device which is established by integrating four omnibearing photographing devices with identical imaging parameters, wherein a plane is used for connecting the four omnibearing photographing devices with identical imaging parameters so as to ensure that fixed single viewpoints of four ODVSs (Omnidirectional Vision Sensors) with identical imaging parameters are positioned on the same plane; the connection manner is as follows: four hyperbolical-surface mirror planes with identical parameters are fixed on a transparent glass face, and four cameras with identical inner and outer parameters are fixed on the same plane; and a microprocessor is used for performing three-dimensional imaging processing on images of the four ODVSs and comprises a panoramic image reading and preprocessing unit, a perspective unfolding unit and a panoramic three-dimensional image output unit; and the panoramic three-dimensional photographing device can be widely applied to a plurality of application fields such as robot vision, animated films, games and the like. The invention provides the panoramic three-dimensional photographing device with the advantages of high cost performance, simplicity for operation and capability of photographing a panoramic three-dimensional video image in real time.

The invention discloses a three-dimensional display device based on a random constructive interference principle, which adopts an amplitude and phase regulator array to regulate the amplitude and phase of incident laser and the converging function of a reflective or transmissive holographic optical element or binary optical element or tilted microlens to generate a coherent sub light source array of which the position is random, so that coherent sub light sources generate constructive interference to form a three-dimensional image. The device adopts a gray scale liquid crystal panel as well as the partitioned lighting by red, green and blue lasers to realize real-time color three-dimensional display, can be widely used in fields of three-dimensional display in computers and televisions, three-dimensional man-machine exchange, robot vision and the like.

The invention relates to the active optics phase conjugate method and the imaging device, the optical switch. It constructs the mode separation/integration convertor by the optical waveguide array which is set together at one end, the optics field couples with each other; it is set separately in the other end. It leads the optical wave into the separating optical waveguide by the separation/integration convertor, then to achieve the active optics phase conjugate by adjusting the phase and the swing. It can solves the imaging problem in many limit condition such as big size, high quality, super quick focal variation, long distance and so on. So it can be used in the field of the computer-human conversation, the robot optics, the integrate circuit photoetching, information storage, the military affairs, the energy source, the biology and the light communication network.

The invention relates to an express sorting method and system based on a robot visual servo technology. The method includes: acquiring a top view image and a side view image of an express; according to the top view image and side view image of the express, acquiring the coordinates of express peripheral points, the express affiliated area and the placement posture of the express on a conveyor, and letting the robot estimate the current position of the express; when the express enters a sorting zone, utilizing the estimated current position of the express and relevant parameters of the robot to adjust the position of a mechanical arm, shooting the two-dimensional image of the express in motion, positioning the express through the visual servo technology and calculating a discrete value; and controlling an end operation apparatus according to the discrete value to grab the express.

The invention discloses a three-dimensional virtual fitting system and relates to the technical field of robot vision and digitized costume design. The three-dimensional virtual fitting system is characterized in that the object of costume three-dimensional virtual fitting is a three-dimensional human body model which is built through shooting and processing of a real human body. A customer is shot by a camera to obtain multiple groups of images; contour extraction and feature extraction are carried out on the images in a computer, based on axial deformation of viewpoints, with the human body model as reference, further factors including human body types and the like are considered, and the real-person human body model of the customer is finally obtained; the obtained model is input into the three-dimensional fitting system; through two-way selection, a style, cloth, design and color and the like of clothes are determined by the customer and a designer; the data are input into a 'custom-made system' to complete a costume design, an individual fashion sample is generated automatically and input back into the three-dimensional fitting system, and then a custom ready-to-wear is sewed in a virtual mode and worn on the real-person human body model to display an individual fitting effect intuitively; relative marking is carried out by an evaluation system, and scores can be a reference index for the customer and the designer; and the design level and design efficiency of the costume are greatly improved.

Apparatuses and methods are disclosed that create a synthetic fovea in order to identify and highlight interesting portions of an image for further processing and rapid response. Synthetic foveal imaging implements a parallel processing architecture that uses reprogrammable logic to implement embedded, distributed, real-time foveal image processing from different sensor types while simultaneously allowing for lossless storage and retrieval of raw image data. Real-time, distributed, adaptive processing of multi-tap image sensors with coordinated processing hardware used for each output tap is enabled. In mosaic focal planes, a parallel-processing network can be implemented that treats the mosaic focal plane as a single ensemble rather than a set of isolated sensors. Various applications are enabled for imaging and robotic vision where processing and responding to enormous amounts of data quickly and efficiently is important.

The invention discloses a vision localization and navigation method and system for a polling robot of a transformer substation. The vision localization and navigation method comprises the following steps: preprocessing a collected environmental two-dimensional colored image, extracting feature points, and determining descriptors of the feature points; matching the descriptors of two adjacent frames so as to obtain a feature matching result, and determining a relative position and posture change of the polling robot; establishing a three-dimensional space model of the transformer substation according to the relative position and posture change of the polling robot, the positions of the feature points and the depth values of the feature points corresponding to depth image positions; matching the two-dimensional colored image with the three-dimensional space model, locating the position of the polling robot, constructing a two-dimensional occupancy network, and determining an obstacle avoidance route. Based on image information analysis and relevant algorithms, the accurate position of the polling robot can be positioned, obstacles in a whole situation can be automatically detected, and the route can be planned according to the obstacles and the positions of the obstacles. The method is easy to implement, low in cost, good in stability and high in precision.

The invention provides a visual guiding-based robot workpiece grabbing method, and belongs to the field of robot visual recognition and positioning. The method comprises the following steps of (1) establishing templates of target workpieces in advance, collecting images of the target workpieces, and acquiring edge feature images of the templates and edge feature images of the target workpieces; (2) acquiring the deflection angle of each target workpiece relative to the corresponding template by utilizing the minimum enclosing rectangle of the edge feature image of the target workpiece, and establishing a compensation template set by utilizing the deflection angles and the edge feature images of the templates; (3) matching the edge feature images of the target workpieces and the compensation template set, and recognizing the target workpieces and acquiring the center coordinates of the target workpieces under a visual coordinate system; (4) converting the visual coordinate system to a robot user coordinate system; and (5) selecting a reference point, and uniquely identifying the same target workpiece by utilizing the time and the position to complete positioning grabbing. The targetworkpieces can be accurately recognized by utilizing the method.

The invention discloses a welding robot vision assembly and a measuring method thereof. The measuring method comprises the following steps: an industrial personal computer controls a global positioning vision assembly to collect workpiece image information and sends workpiece fine positioning measurement position information to a welding robot control system; the welding robot control system controls a welding gun of the welding robot to move a fine positioning visual assembly to a fine positioning measurement point; the industrial personal computer controls the fine positioning visual assembly to collect a workpiece weld joint image, calculates coordinates of a starting point and an ending point of a workpiece weld joint, and automatically generates a welding path of the workpiece weld joint; and the industrial personal computer guides the welding gun to move to a weld joint starting point for arc starting welding and to the ending point for arc extinguishing, and welding of the welding joint is completed. The welding robot vision assembly has the advantages of being free of teaching, high in welding efficiency, high in system tolerance and high in flexibility.