bennygato's profile - activity

I recognize that you were using Yuhua Zou's program- I've tried his program and it worked perfectly (from getting good disparity map to getting good point cloud). So my suggestion is change BM/SGBM's parameters and play with them, the disparity map you got is really not good enough in order to get a good point cloud.

For me, I just use BM and results are pretty good. SGBM is too slow for me.

Hope it helps.

The distance's unit is the same as the one you set for the chessboard. For example, if your chessboard corner is set as (0,0), (0,1), (0, 2)... standing for 1 cm for each block, then the unit for your result from reprojectImageTo3D is in "cm" unit. Hope it helps.

Hi, I got the similar Q as you got. my last two elementsi are 8.5807419247084848e-002, and 0. the baseline is exactly what I have. But one problem bothering me is the 0 --- When I use disparity map and Q matrix to do reprojectImageTo3d, the point cloud it creates looks like just a pyramid where most points gathers at top and I can see nothing from that point cloud. Have you met these situation before? thanks! I've been stuck on this problem so long...

I met this problem, too. Have you figure it out? Would you mind if you could share some new progress of it? thanks a lot!

There is a good piece of code from: [http://stackoverflow.com/questions/22418846/reprojectimageto3d-in-opencv]

The second piece of code in the question, is the code you need to just get one point's XYZ.

My experience is that you should use the origin image after undistortion, which means don't do the cropping. The reason is after cropping, two new cropped images are not row-aligned.