What are the significance and disadvantages of reverse modeling?

The significance and disadvantages of reverse modeling are as follows:

Significance: other modeling methods can use ideas to model without physical objects, and reverse modeling means to have physical objects before modeling. At present, tilt photography advocated by the state also belongs to reverse modeling, that is, all-round shooting and scanning of real scenes, thus modeling.

Disadvantages: the model generated by reverse modeling usually has a high number of faces and a large number of maps, which leads to a huge volume of the whole model, and even the most basic display is difficult.