Forum Discussion
Hi @hien_vu Have you changed the size of the chessboard from the 6x9 size suggested in the documentation of the box_dimensioner_multicam example, please?
My understanding is that if you have changed the size of the chessboard then you should update the parameters in the script.
Hi @MartyG,
Yes, I have changed it to 13 x 9 and square_size = 0.02 (cm)
I have tested with bigger like box real sense, the result is 10x15x6.6 but real is 9 x 14 x 5.
- MartyG5 years ago
New Contributor
I note in your script that you are using 1280x720 resolution. The optimal resolution for best depth accuracy with the D435 / D435i models is 848x480
- hien_vu5 years ago
New Contributor
Hi @MartyG,
I have a re-config resolution 848x480, but it is still not more accuracy, you can check this image below:
so if it can not have 100% accuracy, kindly provide me how percent accuracy we can have? so i will report for my manager.
Thanks
- MartyG5 years ago
New Contributor
It is not possible to achieve 100% accuracy, as the error factor (RMS Error) starts at around 0 at the camera lens and increases linearly over distance. It is expected that accuracy will be less than 1% of the distance of the observed object from the camera. For example, at 1 meter range this may convert to an expected accuracy of 2.5mm to 5mm. There are various factors, including environment and lighting, that can affect accuracy though.
The correct method is to start the program without any objects on the chessboard and allow the cameras to calibrate, and then only place the object on the chessboard when the program asks you to. Are you using the program this way, please?