Image-Based Virtual Reality Research And Realization

This paper, target at the image-based virtual reality, discusses and studies the image-based and graph-based virtual reality, deeply studies in image-based scheme.On the basis of summarizing and analyzing previous work, this paper brings forward a model for creating an image-based virtual reality system. By using this model, we developed an image-based virtual reality development kit (VRDK). The kit has the functions of making panoramic images, constructing virtual environment, navigating virtual environment.The paper adjusts the grayscale and contrast of the image, rotates the image before stitching to reduce the impact on stitching image from image quality.The speed of stitching image and veracity of stitching are the important study subject in the image-based virtual reality. A pretreatment algorithm of image-based virtual reality is brought out to speed up the rate of image stitching in this paper. The algorithm first grays the image, projects the gray-scale image, and then stitch the image roughly.And the paper brings forward a new image stitching method in compare with former method in creating cylindrical panoramic image in virtual reality. This method search rough matching position by fewer points, and then search more precise matchingposition by more points in the neighbor of rough matching position.