Firstly gain the continuously directional image of the fingerprint, secondly design orientation template using the directional image and filter the fingerprint image, lastly obtain the binary image.
先得到指纹图像的连续方向图，再根据此方向图设计方向滤波模板进行滤波，最后得到指纹的二值化图像。
2
Through the adjustment and optimization of the antenna, higher antenna gain is achieved, to meet the requirement of high-gain omni directional antenna.