A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction

As human beings are living in an always changing environment, predicting saliency maps from dynamic visual stimulus is of importance for modeling human visual system. Compared with human behavior, recent models based on LSTM and 3DCNN are still not good enough due to the limitation in spatio-tempora...

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Main Authors: Hao Li, Fei Qi, Guangming Shi
Format: Article
Language:English
Published: IEEE 2021-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9367171/
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author Hao Li
Fei Qi
Guangming Shi
author_facet Hao Li
Fei Qi
Guangming Shi
author_sort Hao Li
collection DOAJ
description As human beings are living in an always changing environment, predicting saliency maps from dynamic visual stimulus is of importance for modeling human visual system. Compared with human behavior, recent models based on LSTM and 3DCNN are still not good enough due to the limitation in spatio-temporal feature representation. In this paper, a novel 3D convolutional encoder-decoder architecture is proposed for saliency prediction on dynamic scenes. The encoder consists of two subnetworks to extract both spatial and temporal features in parallel with intermediate fusion, respectively. The saliency map is produced in decoder by firstly enlarging features in spatial dimensions and then aggregating temporal information. Specially designed structures can transfer pooling indices from encoder to decoder, which helps the generation of location-aware saliency maps. The proposed network can be trained and inferred in an end-to-end manner. Experimental results on benchmark DHF1K show that the proposed model achieves the state-of-the-art performance on key metrics including both normalized scanpath saliency and Pearson's correlation coefficient.
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spelling doaj.art-52e6f3e821814147ba648b01530a6b212022-12-21T22:25:05ZengIEEEIEEE Access2169-35362021-01-019363283634110.1109/ACCESS.2021.30633729367171A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency PredictionHao Li0Fei Qi1https://orcid.org/0000-0002-2161-1551Guangming Shi2https://orcid.org/0000-0003-2179-3292School of Artificial Intelligence, Xidian University, Xi’an, ChinaSchool of Artificial Intelligence, Xidian University, Xi’an, ChinaSchool of Artificial Intelligence, Xidian University, Xi’an, ChinaAs human beings are living in an always changing environment, predicting saliency maps from dynamic visual stimulus is of importance for modeling human visual system. Compared with human behavior, recent models based on LSTM and 3DCNN are still not good enough due to the limitation in spatio-temporal feature representation. In this paper, a novel 3D convolutional encoder-decoder architecture is proposed for saliency prediction on dynamic scenes. The encoder consists of two subnetworks to extract both spatial and temporal features in parallel with intermediate fusion, respectively. The saliency map is produced in decoder by firstly enlarging features in spatial dimensions and then aggregating temporal information. Specially designed structures can transfer pooling indices from encoder to decoder, which helps the generation of location-aware saliency maps. The proposed network can be trained and inferred in an end-to-end manner. Experimental results on benchmark DHF1K show that the proposed model achieves the state-of-the-art performance on key metrics including both normalized scanpath saliency and Pearson's correlation coefficient.https://ieeexplore.ieee.org/document/9367171/Visual attentiondynamic saliency prediction3D fully convolutional networksspatio-temporal features
spellingShingle Hao Li
Fei Qi
Guangming Shi
A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
IEEE Access
Visual attention
dynamic saliency prediction
3D fully convolutional networks
spatio-temporal features
title A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
title_full A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
title_fullStr A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
title_full_unstemmed A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
title_short A Novel Spatio-Temporal 3D Convolutional Encoder-Decoder Network for Dynamic Saliency Prediction
title_sort novel spatio temporal 3d convolutional encoder decoder network for dynamic saliency prediction
topic Visual attention
dynamic saliency prediction
3D fully convolutional networks
spatio-temporal features
url https://ieeexplore.ieee.org/document/9367171/
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