Based On The Measurement Model Of The Camera Movement And Simulation Modeling Study

In the process of vision coordinate measurements in computer vision, threedimensional data of an object need to be acquired from multiple views. The data capturedform different Views would be represented in an identical coordinate system to acquirespatial position relationship among them. To capture three dimensional data of an objectfrom multiple views with multiple cameras, there mainly exist difficult orientations,complex calibrations and high cost. Considering the above problems, a measurementmodel based on motion of a camera is proposed in this paper. We use a camera to acquiredata of an object from multiple views by moving the camera at different positions and thecamera merely needs to be calibrated once at the beginning of measurement.Three parts are mainly developed in this paper:1. Study on measurement model based on motion of a camera and Modeling.According to stereo vision theory and general rigid body motion of a camera in space, weconsider motion of a camera from two distinguishable views, that is camera absolutemotion and camera relative motion. Mathematic measurable models and algorithm ofthese two kinds of motions are respectively discussed here. And the matching algorithmand construction which are used in the measurement model is introduced.2. Analysis on computer vision imaging technology based on OpenGL. The imagingmechanism of OpenGL is analyzed, the derivation of projective matrix is introduced, andthe relationship between vision imaging exterior and interior parameters and image matrixin OpenGL is constructed here. Then, we design experimental programs and give analysisof imaging accuracy. Based on the analysis, vision imaging process can be simulated byOpenGL, by means of OpenGL. It is of significance to relate OpenGL imaging withvision imaging and can benefit simulation experiments in the fields of computer vision.Furthermore, several instances of this method are demonstrated here and the results showthat the method is feasible and valid.3. Research on measurement model based on basic motion of a camera andsimulation modeling. According to classification of measurement model based on motionof a camera, moving parameters of translation and rotation movements are analyzed andmotion models are simplified. Based on the relationship between vision imaging exteriorand interior parameters and image matrix in OpenGL, camera imaging simulation modelsand simulation measurement platform are built; Experiments on objects are designed andthe measurement model presented in this paper is feasible and practical.