在二维中绘制object的3D边界框（加工中）

Question

I would like to draw a 2d box around a 3d object and at the end, it should look like the following image:

I have already drawn a 3d Box and determined the corners (red balls) as well, but however I don't know what to do next or which steps should be taken next.

It would be a pleasure if someone could provide an algorithm or the next couple of steps to carry on working on it.

Thanks in advance:)

Answer 1

Suppose you have 8 coordinates for both x and y

x=[123,455,544,677,345,333,677,322]
y=[734,543,654,234,132,654,321,123]

and assuming these 2 lists to be the xy coordinates for a 3D box, then its 2D box can be found by this code:

x_min=min(x)
y_min=min(y)
x_max=max(x)
y_max=max(y)

And if you do something like this

cv2.rectangle(image,(x_min,y_min),(x_max,y_max),(255,0,0),1)

then you will get the result.