Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Global Temporal Representation based CNNs for Infrared Action
  Recognition   Infrared human action recognition has many advantages, i.e., it is
insensitive to illumination change, appearance variability, and shadows.
Existing methods for infrared action recognition are either based on spatial or
local temporal information, however, the global temporal information, which can
better describe the movements of body parts across the whole video, is not
considered. In this letter, we propose a novel global temporal representation
named optical-flow stacked difference image (OFSDI) and extract robust and
discriminative feature from the infrared action data by considering the local,
global, and spatial temporal information together. Due to the small size of the
infrared action dataset, we first apply convolutional neural networks on local,
spatial, and global temporal stream respectively to obtain efficient
convolutional feature maps from the raw data rather than train a classifier
directly. Then these convolutional feature maps are aggregated into effective
descriptors named three-stream trajectory-pooled deep-convolutional descriptors
by trajectory-constrained pooling. Furthermore, we improve the robustness of
these features by using the locality-constrained linear coding (LLC) method.
With these features, a linear support vector machine (SVM) is adopted to
classify the action data in our scheme. We conduct the experiments on infrared
action recognition datasets InfAR and NTU RGB+D. The experimental results show
that the proposed approach outperforms the representative state-of-the-art
handcrafted features and deep learning features based methods for the infrared
action recognition.

14
The categories of this paper are: math-ph
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat