论文等图片的线条、点坐标转换
Transform the points or lines of Paper's Figure to Data
有时候一些论文只有图，而我们需要绘制这些图的数据，例如曲线的坐标，断层的参数等，可以使用该程序，描点获取数据。
假设我们需要得到test.png中绿色频散曲线的坐标。
Support that we need to get the dispersion curves of the green line below
使用软件，我们得到txt文件如下：
While exploiting this program, we get a txt:
如果你安装有Python3+PyQt5等需要的包体，直接下载后运行ZkPhoto.py即可，如果没有，可以下载exe文件，提取码（1twt）。运行ZkPhoto.exe
If you have alreadly install python3, PyQt5 and other packages needed, download files and run ZkPhoto.py. Otherwise, you can also download exe files and run ZkPhoto.exe
下载运行ZkPhoto.py, 你可能需要安装的包体如下
Download and run ZkPhoto.py. You may need to install packages such as:
pip3 install opencv-python pyqt5界面如下：
You will get a interface：
1 点击File，打开图片文件，进入image窗口，鼠标左击选取3个基本框架点（显示为绿色），例如图片左上[5,3.9]，左下[5,2.9]，右下[30,2.9]。
2 按下CTRL,同时鼠标移动（无需点击）描点（显示为红色点）
3 ×掉image窗口（很重要）
4 在BasicPosition的1号栏按顺序输入基本框架的真实坐标，如 5 3.9 5,2.9 30 2.9 x1,y1,x2... 中间空格隔开。选择取点方式，1.全选 2.等x间距取点：在Operate栏输入想要获取的坐标x，格式为 开始x 间隔 结束x 例如 7 1 15（需要在描点范围内，或许后续版本会解除这一限定）
5 点击开始按钮
1 Click File, choose your figure. You will enter the 'image' window, and left-click to select three basic frame points (shown in green), such as the top left of the picture, the lower left, and the lower right.
2 Press CTRL, while moving the mouse (no need to click) to trace the dot (shown as a red dot)
3 Close the 'image' window (very important).
4 Enter the real coordinates of the basic frame in order in column 1 of BasicPosition, such as 5 3.9 5 2.9 30 2.9 follows x1 y1 x2... Enter the coordinate x you want to obtain in the Operate field in the format of 'startx interval endx' for example 7 1 15 (need to be within the range of the trace point, later versions will remove this restriction).
5 Click the start button.
1 操作中步骤1和步骤2，顺序任意，可以交叉完成
2 步骤1，2定下的点均可撤销，操作为，基本框架点右击消去上一个点，绿色将显示为蓝色；绘制点按住alt，移动鼠标撤销，红色将显示为白色。
3 状态栏会提示一些错误信息。
4 如果同一图片文件，得到的txt会被覆盖，记得保存
5 一些快捷键可以参考Help菜单
1 In the operation, step 1 and step 2 can in any order.
2 Points choosen at step 1,2 can be cancelled anytime. Three basic points can be undone by right-click(green point will be replaced by a blue one) and Red points can be undone by cancelled by moving mouse with 'alt' pressed.
3 The statusbar prompts some useful error messages.
4 If the figure files are same, the resulting txt will be overwritten, remember to save.
5 For some shortcut keys, please refer to the Help menu.
1 添加滤波效果
2 添加JM投影，目前只支持JX投影
3 添加用户自定义所需x坐标点（From File）
...
1 Add filter
2 Add JM projection(Only Jx is supported now)
3 Users can input a txtfile specified the x point they need
...