Large-Scale Live Active Learning: Training Object Detectors with Crawled Data and Crowds

Active learning and crowdsourcing are promising ways to efficiently build up training sets for object recognition, but thus far techniques are tested in artificially controlled settings. Typically the vision researcher has already determined the dataset’s scope, the labels “actively” obtained are in...

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Veröffentlicht in:International journal of computer vision Jg. 108; H. 1-2; S. 97 - 114
Hauptverfasser: Vijayanarasimhan, Sudheendra, Grauman, Kristen
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Boston Springer US 01.05.2014
Springer
Springer Nature B.V
Schlagworte:
Accumulation
Active control
Active learning
Algorithms
Analysis
Annotations
Artificial Intelligence
Classifiers
Computer Imaging
Computer Science
Crowdsourcing
Data collection
Datasets
Detectors
Image Processing and Computer Vision
Labeling
Learning
Object oriented programming
Object recognition
Pattern Recognition
Pattern Recognition and Graphics
Sensors
Studies
Teaching methods
Training
Trains
Vision
Vision systems
Crowdsourcing
Hashing
Large-scale learning
Active learning
Image annotation
Object detection
ISSN:0920-5691, 1573-1405
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Beschreibung
Zusammenfassung:Active learning and crowdsourcing are promising ways to efficiently build up training sets for object recognition, but thus far techniques are tested in artificially controlled settings. Typically the vision researcher has already determined the dataset’s scope, the labels “actively” obtained are in fact already known, and/or the crowd-sourced collection process is iteratively fine-tuned. We present an approach for live learning of object detectors, in which the system autonomously refines its models by actively requesting crowd-sourced annotations on images crawled from the Web. To address the technical issues such a large-scale system entails, we introduce a novel part-based detector amenable to linear classifiers, and show how to identify its most uncertain instances in sub-linear time with a hashing-based solution. We demonstrate the approach with experiments of unprecedented scale and autonomy, and show it successfully improves the state-of-the-art for the most challenging objects in the PASCAL VOC benchmark. In addition, we show our detector competes well with popular nonlinear classifiers that are much more expensive to train.
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ISSN:0920-5691
1573-1405
DOI:10.1007/s11263-014-0721-9