In research area of pattern recognition, image processing and so on, many long but narrow band-like image such as the writing, the engineering plat, the road map, the fingerprint and so on, needs to be processed frequently.

• 如在模式识别、图像处理等研究领域中，常常需要处理如文字、工程图、路线图、指纹等许多长而窄的带状图像；