Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SegGroup: Seg-Level Supervision for 3D Instance and Semantic
  Segmentation   Most existing point cloud instance and semantic segmentation methods rely
heavily on strong supervision signals, which require point-level labels for
every point in the scene. However, such strong supervision suffers from large
annotation costs, arousing the need to study efficient annotating. In this
paper, we discover that the locations of instances matter for 3D scene
segmentation. By fully taking the advantages of locations, we design a weakly
supervised point cloud segmentation algorithm that only requires clicking on
one point per instance to indicate its location for annotation. With
over-segmentation for pre-processing, we extend these location annotations into
segments as seg-level labels. We further design a segment grouping network
(SegGroup) to generate pseudo point-level labels under seg-level labels by
hierarchically grouping the unlabeled segments into the relevant nearby labeled
segments, so that existing point-level supervised segmentation models can
directly consume these pseudo labels for training. Experimental results show
that our seg-level supervised method (SegGroup) achieves comparable results
with the fully annotated point-level supervised methods. Moreover, it also
outperforms the recent weakly supervised methods given a fixed annotation
budget.

11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics