Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Application of integral invariants to apictorial jigsaw puzzle assembly   We present a method for the automatic assembly of apictorial jigsaw puzzles.
This method relies on integral area invariants for shape matching and an
optimization process to aggregate shape matches into a final puzzle assembly.
Assumptions about individual piece shape or arrangement are not necessary. We
illustrate our method by solving example puzzles of various shapes and sizes.

29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph