About matrix city branch

[fly0520]

matrix_city_init.ply是怎么应用在训练中的呢（没有看到代码中有调用），我使用了colmap的结果作为初始化却达不到相同的指标

[cskrren]

This is the result obtained through 3DGS pre-training. We use the positions of 3DGS as the initial values to conduct training from scratch. Therefore, in fact, we store the xyz data in points3D.ply, and then read it using the "City" method.