PANORAMIC ORIENTATION DESIGN AND IMPLEMENT BASED ON OPEN SOURCE SOFTWARE PTVIEWER

Panoramic images to simulate two-dimensional of the real three-dimensional space, presented to the viewer. And to provide all kinds of manipulation of the image viewer function, you can zoom in and out, watching the scene in all direction to simulate and reproduce the scenes to achieve the real effect of the environment. Image Map (pohotographic map) is a map with ground-sensing image, which is based on aviation and space-based remote sensing image, the geometric correction, in line with the line work and a little note, the graphics object that the surface of the integrated Maps, is the use of aerial photographs or satellite imagery, through the geometric correction, projection transformation and the scale reduction, the use of certain map symbols, annotation, drawing objects directly reflect the spatial distribution of geographic features and map. Image Map is a video content, the line designated elements, mathematical foundation, contour decoration of the map. PTViewer is an open source Java project, which could control in real time to read the perspective of the current roaming and other information, but the panoramic view of the level of the angle 0 is not roaming the map corresponds to the direction of the north. Therefore, the paper puts forward a kind of orientation to determine the true panoramic roaming the corresponding direction based on open source software PTViewer. The experiment showed that the panoramic orientation is much valid, which could link these two types of data, and something useful is obtained.