Table of Contents
One aspect of this design project involved building an imaging payload, which was to be mounted in the plane. The research and development of the imaging payload was based on three qualities: flexibility, stability, and complexity.
- Lynx PC104 running Debian Linux
- Active Silicon PHX-D24CL Frame Grabber
- Sony XCL-V500 Camera
Software DesignThe software design was slowed down due to the amount of time it took to receive the frame grabber and the API associated with it. While waiting for the last component, a software design concept was generated and a library named Image Magick was chosen to handle the image manipulation. The code was designed to read data from the plane, and alter the image capture rate to produce a 40% overlap.
The time constraints created by the slow delivery of the frame grabber forced some modification to the code design. It currently relies on user input to specify how many pictures will be taken, and adjustment of the delay between images. It currently defaults to a 10 image spread at approximately one image every four seconds.
Testing of the payload was done under laboratory conditions, including taking a large series of images. These images were automatically saved to disk by the Image Magick library into a common JPEG format.