Research And Implementation On 3D Reconstruction Based On Binocular Stereo Vision

One of the main component of the computer vision is 3D reconstruction.It is to restore the depth information of an object by two or more than two images of two-dimensional.The technology of binocular stereo vision based on two images is a hot point.The binocular stereo vision has a strong resemblance to the visual perception procedure of mankind. We can get different images with two different view points and then calculate the position deviation of images pixels based on triangular measure.Finally, we can attain the depth information of the object.The binocular stereo vision widely used in many fields such as virtual reality, machine vision, multimedia education,digital entertainment, appearance design of industrial products, sculpture and architecture etc.Based on the analysis and research of much technology and literatures concerned,this paper studies the basic problems of stereo visual domain such as camera calibration,stereo matching and the 3D reconstruction and so on.The corresponding work are given as follows:1 .Do the calibration template by ourself then shoot two different angles images of the cell phone with a calibration template. We use the Tsai's two-step method for calibration and obtained the internal and external parameters.2.Process these photos by image smoothing, image sharpening and other image pre-processing.We use the operator to obtain the feature points of both images.We search this image's matching point in other image based on the epipolar line restriction and so on.based on the matching method of feature.3.Based on the results of the cameras calibration and feature points matching,we reconstructed the character points according to the principle of the stereo vision ,and get the 3D coordinates of the character points. At last we use OpenGL program in the computer to display the disperse points and implement the three-dimensional reconstruction of the cell phone.