A device for supporting a camera to facilitate capturing stable images from a moving and vibrating platform, such as a helicopter includes a base plate and a vertical post attached to the base plate and extending upwardly from the base plate. The string carrier assembly includes a pair of string guides and string holders for securing cutting string to the string carrier assembly without the use of tools. Whether analog or digital, they communicate the difference between a driver intending to turn and the vehicle turning. A parallel moving vector estimation unit estimates a parallel moving vector of timing included in the parameter of affine transformation by using an input image of timing from the first camera, an input image of timing from the second camera, and the temporary status information.