Firstly,the energy of gradient vector flow field is achieved through the isotropic diffusion.
用各向同性扩散得到梯度矢量流场的能量,并获得初始边界和骨架点(无须任何初始化);最后利用蛇模型演化这些初始点,当模型能量达到最小时演化停止。
A hybrid filtering method based on anisotropic diffusion for ultrasound speckle suppression was proposed.
提出基于各向异性扩散的混合滤波新方法,以图像梯度为依据,利用各向异性扩散、各向同性扩散和自适应脉冲噪声滤波对医学超声图像进行分段滤波。
This paper probes the microstructure and its formation mechanisms of B-Al co-diffused Layer of 45、T8、5CrMnMe、3Cr2W8V steels in the fused salts composed of the borax and alundum with reducing agent The result shows That,as B/Ae ratio 1.
本文探讨了４５、Ｔ８、５ＣｒＭｎＭｏ、３Ｃｒ２Ｗ８Ｖ钢，在添加还原剂的硼砂、氧化铝浴中的渗层组织及其形成机理，结果表明，当盐浴中Ｂ／Ａ｜值在一定范围时，硼、铝原子可以共同扩散。