To segment leaves, as other leaves in image background, the segment method that combined auto-threshold with handwork sampling to modify segment threshold can segment accurately aim leaves.

• 提出了用模糊判别的自动阈值法与手工补选样点修正阈值法相结合的图像分割方法,实现了对有其它植物叶片为背景的杂草图像的正确分割。