Videogrammetry: A new approach of 3-dimensional reconstruction from video using SfM algorithm: Case studi: Coal mining area

Indonesia is a country that have a massive natural resources for producing coal. In 2012, Indonesia archive third place world level as the most producer coal with total 466.307.241 ton. Management process very needed for manage coal mining sites. The mine management process can be done with 3- dimensional point clouds reconstruction using the Structure-of- Motion Method (SfM). SfM is an algorithm used to build structure from overlapping of many images by using photogrammetry techniques. When acquisition image data, sometimes get a failure of automatic camera trigger and lack of density between images. This study uses video data from UAVs flown over mining areas to record all mining activities. Video data predicted can reduce errors during image capture and increase the overlap value between successive images and increase the number of point cloud. The output on the software is tested using the Simple Regression method. This study shows that input video data with 1 minute duration and 90% overlap value can produce 2910 point cloud. The Simple Regression test result an F value of 12,408. It shows that the greater value of overlap, can produce a lot number of points cloud.