Treat with plate grain image got by video using methods of gray level transformation,median filter,erosion,expansion and so on,gain the image which only includes grain,then detect brim of grain.

• 对视频采集到的板材纹理图像进行灰度化、中值滤波去噪、二值化、腐蚀、膨胀等处理,得到仅包含目标纹理的图像后检测纹理边缘。