Abstract:

An extraction algorithm for the fire cannon's jet trajectory in colorful pictures based on the difference of RGB is presented.First,24 directions are scanned under the condition that the start of jet is known to make sure that the jet is in one of the 8 directions of the 米 shape,and then the direction is detected by the two-trace method until a certain threshold condition or the edge of the picture is reached.The result shows that this algorithm can extract fire cannon's jet trajectory accurately and completely even under complex conditions.The algorithm is strongly adaptive.

Key words: jet trajectory extraction;difference of RGB;image segmentation