silvaco-PN-athena

说明：  Zigzag和iZigzag的程序及改进的Zigzag和iZigzag的程序。后者可以大幅提高运算效率(Zigzag and iZigzag procedures and improved Zigzag and iZigzag procedures. The latter can substantially increase the computing efficiency)

vb 饼状图和柱状图，这里是一个demo，并含有注释，方便新手学习(vb,circle chart and point chart)

最大类间方差法是由日本学者大津(Nobuyuki Otsu)于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2部分。背景和目标之间的类间方差越大,说明构成图像的2部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2部分差别变小。(The largest between-class variance method was proposed by the Japanese scholar Nobuyuki Otsu in 1979. It is an adaptive threshold determination method, also known as the Otsu method, or OTSU for short. It is based on the grayscale characteristics of the image and divides the image into two parts: the background and the target. The larger the variance between the background and the target, the greater the difference between the two parts that make up the image. When the part of the target is wrongly divided into backgrounds or part of the background is mis-divided into goals, the difference between the two parts will be smaller.)

石墨烯的结构编程图,这是费了工作人员很长时间才完成的。(The figures of graphene)

说明：  Retinex算法,实现图像增强，图像质量明显提高。(Retinex Algorithm)

说明：  顶帽变换的程序，能够实现平滑图像的效果。(Cap transformation process, to achieve the effect of smoothing the image.)

说明：  Snake模型，也就是常说得Active Contour模型的MATLAB实现，其中还包含了原文献。(Snake model, which is often put Active Contour MATLAB model, it also includes the original literature.)

说明：  本方法采用pca进行特征提取，knn分类器进行人脸识别。(The method of feature extraction using pca, knn classifier for face recognition.)

清华大学本科生课程设计，实现平面点集的三角剖分！用外接圆测试剖分的正确性。算法执行速度较快，但存在狭长三角形！(Tsinghua University undergraduate courses designed to achieve the triangulation of the set of points in the plane! Circumcircle test the correctness of the split. Algorithms perform faster, but there is a long, narrow triangle!)

把二值化的raster转成shp，中间借助了evf(The binarization raster into shp, intermediate with the evf)