Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Using Statistical Moment Invariants and Entropy in Image Retrieval   Although content-based image retrieval (CBIR) is not a new subject, it keeps
attracting more and more attention, as the amount of images grow tremendously
due to internet, inexpensive hardware and automation of image acquisition. One
of the applications of CBIR is fetching images from a database. This paper
presents a new method for automatic image retrieval using moment invariants and
image entropy, our technique could be used to find semi or perfect matches
based on query by example manner, experimental results demonstrate that the
purposed technique is scalable and efficient.

20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph