output of visualization is BLANK

[SeungHwi0613]

First of all, I really appreciate about your great work.

I tried to run visualise.py

error1)cv2.error: OpenCV(4.7.0) 👎 error: (-5:Bad argument) in function 'line'

Overload resolution failed:

• Can't parse 'pt1'. Sequence item with index 0 has a wrong type

error2)AttributeError: 'FigureCanvasQTAgg' object has no attribute 'renderer'

solution1) Edit 'visualise.py' line37
->cv2.line(trajectory_img, (round(path[t][0]),round(path[t][1])) , (round(path[t+1][0]),round(path[t+1][1])), color, 4)

solution2) Edit 'matplotlib/backends/backend_agg.py' def tostring_rgb(self):

def tostring_rgb(self):
    self.renderer = self.get_renderer() # edit
    return self.renderer.tostring_rgb()

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After this two steps, i solved errors but outputs are empty.

[SeungHwi0613]

I solved it, but only BEV segmentation!
I want to see the result in right side too. like your example.

[Sri Datta Budaraju]

Could you share how you solved the blank image issue? Thanks

[seamie6]

Could you share how you solved the blank image issue? Thanks

For myself, I was getting the error AttributeError: 'FigureCanvasTkAgg' object has no attribute 'renderer' when running visualisation and the code was not executing.
I tried to fix this by adding fig.canvas.draw() beneath fig = plt.figure(figsize=(4 * val_w, 2 * val_h)) in visualise.py
This made the code work but I was getting the blank output as seen above

Instead, I removed the line fig.canvas.draw() used the solution in #14 to solve it
I do not know if this is the specific issue you are having but I hope it helps