Camera Parameters

[mohamadmarjani97]

hello Mateusz
I download your code and run it. it was great.
I have some question about Camera Parameters. my first question is what are the "baseline=59.8896" ,"doffs=0" and "ndisp=942"?
"camera.txt" and "images.txt" are necessary for running? I want to use my images to run this code and I want to know that's enough to fix Camera parameters? or I need to to Other?
Thank you

[mtszkw]

Hi,

Data comes from ETH3D datasets and its elements (cameras.txt and images.txt) are documented in ETH3D documentation. Two-view dataset that I use also comes with calib.txt file that contains parameters you mentioned (baseline, doffs, ndisp, ...). Description of calib.txt contents can be found in Middlebury data format documentation.

doffs: x-difference of principal points, doffs = cx1 - cx0

baseline: camera baseline in mm

ndisp: a conservative bound on the number of disparity levels;
the stereo algorithm MAY utilize this bound and search from d = 0 .. ndisp-1

Honestly, I dont' really remember what's the final status of the code, but if the version available here works well for you, then I think you only need data that's really used there. So cameras.txt and images.txt seem unnecessary, but baseline value is used in the notebook for constructing Q matrix.

BTW I'm really curious if this code works with your images, please let me know!