Information processing device and method

An information processing device comprising:

• a hierarchization unit configured to hierarchize attribute information of a point cloud in which 3-dimensional shaped objects are expressed as a set of points, and generate a reference relation of the attribute information between layers;
• a sub-hierarchization unit configured to sub-hierarchize the attribute information of a layer in the layer of the attribute information generated by the hierarchization unit to generate a reference relation of the attribute information between sub-layers;
• and
• an inverse hierarchization unit configured to inversely hierarchize the attribute information based on the reference relation of the attribute information between the layers generated by the hierarchization unit and the reference relation of the attribute information between the sub-layers generated by the sub-hierarchization unit.

An information processing method comprising:

• hierarchizing attribute information of a point cloud in which 3-dimensional shaped objects are expressed as a set of points, and generate a reference relation of the attribute information between layers;
• sub-hierarchizing the attribute information of a layer in the layer of the generated attribute information to generate a reference relation of the attribute information between sub-layers;
• and
• inversely hierarchizing the attribute information based on the generated reference relation of the attribute information between the layers and the generated reference relation of the attribute information between the sub-layers.