Title
Saliency-Driven Class Impressions For Feature Visualization Of Deep Neural Networks
Abstract
In this paper, we propose a data-free method of extracting Impressions of each class from the classifier's memory. The Deep Learning regime empowers classifiers to extract distinct patterns (or features) of a given class from training data, which is the basis on which they generalize to unseen data. Before deploying these models on critical applications, it is very useful to visualize the features considered to be important for classification. Existing visualization methods develop high confidence images consisting of both background and foreground features. This makes it hard to judge what the important features of a given class are. In this work, we propose a saliency-driven approach to visualize discriminative features that are considered most important for a given task. Another drawback of existing methods is that, confidence of the generated visualizations is increased by creating multiple instances of the given class. We restrict the algorithm to develop a single object per image, which helps further in extracting features of high confidence, and also results in better visualizations. We further demonstrate the generation of negative images as naturally fused images of two or more classes. Our code is available at: https://github.com/val-iisc/Saliency-driven-Class-Impressions.
Year
DOI
Venue
2020
10.1109/ICIP40778.2020.9190826
2020 IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP)
Keywords
DocType
ISSN
Visualization, Class Impressions, Saliency Maps
Conference
1522-4880
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Sravanti Addepalli102.03
Dipesh Tamboli200.34
R. Venkatesh Babu3104684.83
Biplab Banerjee45723.15