About the part of 3dgs

[MQYm]

Thanks for your excelent work! Hello, what is "img_mask" used for? In the function to calculate the loss, img_mask is used, but img_mask is not used in the original 3dgs. If I use ordinary 3dgs image data, how should I get img_mask?

[yGaoJiany]

Thank you for your attention. The mask actually marks the objects we are interested in. In this work, the background of the image is of little concern to us. You can use some background removal tool to get the mask, e.g. https://github.com/danielgatis/rembg. By the way, this loss can be removed if you also care about the material of the background.