Abstract:

The method of depth measurement by using binocular-camera is based on the principle of parallax, which provides a new solution to distance measurement by seeking the match point in the 2D-image. In this paper, an improved method is presented to extend the length of depth measurement with adaptive focusing. A concept of sensitivity is presented, which is an important factor for efficient and accurate depth measurement. According to the sensitivity function, an improved algorithm is presented, which is well-performed in the measurement test.

Key words: stereo vision; binocular camera; depth measurement; flexible focus; sensitivity; principle of parallax