This paper presents a new specification of LDM-Pack tree

which renders trees rapidly with high fidelity. It first samples the tree model

and gains its LDI-Packs. All LDI-Pack textures are compressed by an occlusion-inclusive compression approach

and packed into texture packages. Then the corresponding LDM-Packs are created from LDI-Packs according to the predetermined viewpoints. Thus

a tree is specified by a group of LDM-Packs with several sample directions. When rendering stage

one blending scheme is used to render correct LDM-Packs for smooth transitions. Shown by the experiments

the number of rendering depth mosaics is less than the one of the tree original polygons.