On-Board Extraction of Video Sequences

Purpose and goal:

The project has fulfilled its aims and objective by creating a demonstrator where a video operator, from the ground, can control both what is transmitted to the ground and video´s geometric resolution. By changing the bandwidth in flight, we can adapt what is transmitted to the available capacity, so as not to lose parts of the transmission. Furthermore, we can now transfer subareas from live video, as well as from video stored on board.

All video data processing takes place on board, directly connected to the sensor. The project has increased our competetiveness. Expected results and effects:

The project adds interesting functions, increasing the interest in Spacemetric´s Keystone software for old and new customers.

The project has also given us ideas for more abilities that we need to develop. These capabilities include being able to change the metadata without destroying the geometric information so that we can subsequently improve the geometric accuracy of a video stream, e.g. by creating orthorectified video streams.

Approach and implementation:

Above all, Dr David Gureya and Mr Daniel Bernhardsson participated from the development team. The work was led by Mr Daniel Åkerman.

The work was delayed because halfway through the project we chose to change the video library from G-streamer to ffmpeg, where we could overcome a limitation in G-stream. This experience is important for future further development of the project´s functionalities. The module developed in the project has been tested on hardware that can be used on board.