How would I detect the angle of these two lines?

Question

As you can see in the picture a cone is generated when a person is using maps. I would like to know if it is possible to detect the two outer-lines of the cones like this but the ultimate goal is to use this information to find the angles at which the lines are at.

I was following this tutorial on hough-transform but end up with this. Looking for an easier way to find the angles if possible.

XAxis xAxis = chart.getXAxis();
xAxis.setAxisMinimum(<yourMinum>);
xAxis.setAxisMaximum(<yourMaximum>);

Answer 1

这是我的结果：

你应该首先参考： Detect Colored Segment in an image

我的步骤是：

1. 将其转换为HSV，然后获取S
2. S
上的精干
3. 检测精确边缘，过滤一些标尺。