Hi Youssef,
I understand you are trying to convert data in ‘bin’ format to PCD format.
You could try executing the following code in MATLAB to obtain the same.
fid = fopen('yourData.bin', 'r');
data = fread(fid,'single');
fclose(fid);
% Reshape Data based on the Structure of the Data. I am assuming data
% contains x y and z data
data = reshape(data,[],3);
% See "doc pointCloud" for providing intensity or Color data as Name Value Pair
pcdData = pointCloud(data);
pcwrite(ptCloud, 'lidar_data.pcd');
This should help you load the correct data to Ground Truth Labeler app.