Object Distance Tracking with Python and OpenCV

Who needs an expensive lidar to detect object distance from the camera? we got Webcams for that now. The demo shows how the object was detected and its distance was identified easily with a script.

[shadowz]

bro can I change it to measure distance for detected object rather than color such as an apple?

[tuvelout]

Well if it is possible it means I can do it

[darshikagupta]

will it find the distance of the object which is approx 20 metre far?

[faisal]

i can use this without the object? i want it in the centre

[devados]

bro i have error:Traceback (most recent call last):
File "c:\Users\devad\opencv\distance_fromcamera\get_colour.py", line 27, in <module>
cv2.resizeWindow('F', 700, 600)
cv2.error: OpenCV(4.9.0) error: (-27:Null pointer) NULL window: 'F' in function 'cvResizeWindow'

[jvhwcqk]

Hello :-) Thank you for sharing this interesting video.
I am having the following error though when running dist_measure

_, cont, hei = cv2.findContours(d_img, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
ValueError: not enough values to unpack (expected 3, got 2)

[borasarikaya]

I could not really understand the way you ve measured with just one camera. Did you give the specific sizes of the object to calculate the distance. Which means you can not calculate the distance of another object without inputing the sizes?

[anirudhhasinghpanwar]

I am currently doing a project for university and I am not able to understand how is it measuring the distance I watched some of the other videos but in many of them it requires the actual height of the object can you please help

[dariusdarius]

i have a beacon and i want to detect it and find the distance

[adarshraj]

Can I calculate the live speed with it?