基于Niblack的手掌静脉图像二值化技术研究

针对Niblack动态阈值算法在进行手掌静脉图像二值化时，容易产生伪噪声块、断纹的现象。分四块局部均值算法对于对比度较低的手掌静脉图像部分，具有较好的二值化效果。结合分四块局部均值法的优势，在Niblack动态阈值算法基础上，提出一种新的融合二值化算法。实验结果表明，该算法能够有效地消除噪声块，克服纹路断开现象，更好的保持原静脉架构，满足后续工作的需要。

Niblack-based Binaryzation Algorithm for Palm Vein Image

The original dynamic threshold Niblack algorithm is easy to produce the pseudonoise block and break the connection of veins,and affect the next procedure.The four-part-average algorithm for the low-contrast parts of the palm vein image is of a better binarization result.So in combination of four-part-average algorithm with dynamic threshold Niblack algorithm,this paper proposes a novel binaryzation technology.The experimental results show that this novel algorithm could effectively remove the noise and keep...