Depth unit

[muriatec]

Hello, thanks for adding the new feature of depth rendering! I'm trying to render depth from Gaussian splats and create point cloud from depth images, and I found the rendered depths are in pixel values (0~255), therefore I'd like to know how to convert from pixel values to real-world units (e.g. meters) given camera intrinsic?

[AsherJingkongChen]

We don't have real-world scales in COLMAP, right?

Because the camera poses are estimated from pixels, we can not know the real-world scales of Gaussians easily. (2D images lose their z-axis)

I think you could try to parse LiDAR data instead.