In some cases, calibration gives central point cx,cy != (0.5,0.5), or it
can be decided to crop the input images.
In those cases, it is necessary to split fovx to fovXleft,fovXright and fovy to fovYtop,fovYbottom
Note that the export of cameras to cameras.json merges those values back
to the basic fovx,fovy. This aims at avoiding the modification of
diff_gaussian_rasterization branch used for SIBR_gaussianViewer_app.
Signed-off-by: Matthieu Gendrin <matthieu.gendrin@orange.com>
* Provide --data_on_cpu option to save VRAM for training
when there are many training images such as in large scene, most of the VRAM are used to store training data, use --data_on_cpu can help reduce VRAM and make it possible to train on GPU with less VRAM
* Fix data_on_cpu effect on default mask
* --data_on_cpu to --data_device
* update readme
* format warning infos
