Context-Aware Saliency Detection

author: Lihi Zelnik-Manor, Department of Electrical Engineering, Technion - Israel Institute of Technology
published: July 19, 2010,   recorded: June 2010,   views: 820
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Slides

Slides
0:00 Context-aware saliency
0:03 Describe this picture (1)
0:14 Describe this picture (2)
0:35 Describe this picture (3)
0:49 Saliency = human attention
1:16 Saliency = dominant object
1:22 Saliency = segmentation
1:30 Saliency = story telling
1:52 Context-aware saliency
2:18 Contributions (1)
2:37 Contributions (2)
2:41 Principles of saliency
2:53 Principle 1
3:29 Principle 2
4:00 Principle 1 + 2
4:40 Principle 3
5:09 Principle 4
5:31 Incorporating the 4 Principles (1)
5:39 Incorporating the 4 Principles (2)
5:55 The “how”
5:58 Local-global saliency
6:28 Computing uniqueness
6:38 Appearance uniqueness (1)
6:45 Appearance uniqueness (2)
6:57 Positional information (1)
7:14 Positional information (2)
7:22 Positional information (3)
7:26 Single scale uniqueness (1)
7:45 Single scale uniqueness (2)
8:01 Single scale uniqueness (3)
8:13 Single scale saliency (1)
8:25 Single scale saliency (2)
8:30 Multiple scales
9:02 Including immediate context
9:26 Visual organization
10:02 Final saliency
10:05 High-level factors
10:15 Algorithm summary
10:38 Results
10:41 Non-interesting background (1)
11:14 Non-interesting background (2)
11:23 Object + immediate surrounding (1)
11:41 Object + immediate surrounding (2)
11:54 Complex scenes (1)
12:05 Complex scenes (2)
12:15 Quantitative evaluation
12:23 Compare with Liu et al.
12:52 Applications
12:54 Image retargeting (1)
13:25 Image retargeting (2)
13:43 Image retargeting (3)
13:47 Collage (1)
14:08 Collage (2)
14:11 Collage (3)
14:17 Collage (4)
14:28 Summary
14:49 Questions

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Description

We propose a new type of saliency – context-aware saliency – which aims at detecting the image regions that represent the scene. This definition differs from previous definitions whose goal is to either identify fixation points or detect the dominant object. In accordance with our saliency definition, we present a detection algorithm which is based on four principles observed in the psychological literature. The benefits of the proposed approach are evaluated in two applications where the context of the dominant objects is just as essential as the objects themselves. In image retargeting we demonstrate that using our saliency prevents distortions in the important regions. In summarization we show that our saliency helps to produce compact, appealing, and informative summaries.

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