During IDEAS-4-GV, the HIAPER flew a forward and a right-facing digital camera for in-flight image capture. The forward camera is a Point Grey Research Hi-Res Flea - Color, 1024x768 resolution. The Navitar DO-412 lens has a focal length of 4 mm and the field of view is about 62 x 48 degrees with some barrel distortion. This camera is located on the right wing pylon. The right-facing camera is a Point Grey Research Flea 3 (FL3-FW-14S3C-C) - Color, 1280 x 960 resolution equipped with an Edmund Optics 6mm lens (#67-709). The field of view is 68 x 51 degrees with approximately 6% barrel distortion. This camera was looking out a right-side cabin window, tipped slightly down and aft from perpendicular to the fuselage Images were acquired once per second and stored as JPEG-compressed files, roughly 100 kB each. No image processing was performed beyond converting the raw pixel data to 24 bit color images. Applying a sharpening filter as is ordinarily done by consumer digital cameras will considerably improve the appearance.
The UTC date and time are encoded in the filename as YYMMDD-HHMMSS.jpg. Preliminary H.264 compressed, half-resolution movies (.mov) were created. Each 1-second image was processed with the linux ImageMagick toolkit. The image was first cropped to 512x384 pixels. Sharpening was then performed [SHARPEN(0.0x1.0)]
These 1-second annotated images were compiled into a video stream running at 15 frames/s, 1500 kbps data rate. The movies are playable with Quicktime, WIndows Media Player, mplayer, VLC, and others. No imagery was recorded during the RF01 flight.
Letter from the Project Manager
Operations Debrief (Dec 5, 2013)