Multi-Resolution Mosaicing

摘要

High-resolution image mosaics construction is one of the significant topics of research in the fields of computer vision, image processing, and computer graphics. Video mosaics contain enormous valuable information but when analyzing, searching or browsing a video, redundancy between frames creates problem. Therefore it is more suitable to bring together all the frames of a shot into one single image called a mosaic. The idea of Multi-resolution mosaics comes when it is needed to handle large variations in image resolution. As the camera zooms in and zooms out changes in image resolution occur within the video sequence. Some frames which are zoomed in are at higher resolution and contain more detail. If the mosaic image is constructed in low resolution it results in loss of high frequency information in the regions of mosaic that corresponds to high resolution frames. On the other hand if the mosaic image is constructed at the highest resolution it will result in over sampling the low resolution frames. Varying image resolutions can be handled by multi-resolution mosaic data structure Zooming information of each pixel is recorded in a multi resolution data structure. In a multi resolution mosaic user can view the actual zooming information and can distinguish the region with and without zooming information.