Due to the difficulty in generating the effective descriptors which are robust to occlusion and viewpoint changes, place recognition for 3D point cloud remains an open issue. Unlike most of the ...

The task of 3D semantic scene graph (3D SSG) prediction in the point cloud is challenging since (1) the 3D point cloud only captures geometric structures with limited semantics compared to 2D images, ...

Multimodal Knowledge Graph (MMKG) is a knowledge graph that represents relationships between entities using multiple modalities, such as images, textual descriptions, and other forms of data.