OTSU3Dmy

ISAR 二维成像（包含运动补偿）数据来源于网上(ISAR two-dimensional imaging (including motion compensation))

三维测量重构系统，实现了重构部分的坐标旋转，把完整图像拼接成功(Reconstruction of three-dimensional measurement system to achieve a reconstruction of part of the coordinate rotation, image stitching to complete successfully)

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.)

matlab采用二进小波实现边缘检测的源代码(matlab using Dyadic Wavelet Edge Detection)

一个由matlab编写的从多视点拍摄的图像计算Visual Hull的简单的演示程序，基于空间体积的方法求物体的Visual Hull，对实现由多视点图像求Visual Hull的过程可以起到借鉴作用(Matlab prepared by a multi-viewpoint images of the Visual Hull calculate simple demo program, the method of space-based volume objects for Visual Hull, the realization of multi-viewpoint image for Visual Hull of the process can play a useful reference)

说明：  根据离散数据点拟合圆，得到圆心坐标和拟合半径(Fitting the circle according to the discrete data points, the coordinates of the center of the circle and the fitting radius are obtained.)

说明：  hough变换提取直线的程度，有详细注解，适合新人。(hough transform to extract linear extent, with detailed notes, for newcomers.)

可以把jpg图片转换成obj三维网格文件，这样可以在三维形态下观察图像数据(Jpg images can be converted into three-dimensional grid obj file, so that patterns can be observed under the three-dimensional image data)

说明：  shepp-logan的2D直接傅里叶反变换法(Shepp-logan 2-D Direct Fourier Inverse Transform Method)

说明：  在图像上画一条线，提取所在位置的像素。主要是用来观察横向异质性变化的。(Draw a line on the image and extract the pixels at the location. Mainly used to observe changes in lateral heterogeneity.)