TagCaptcha: annotating images with CAPTCHAs.
Donn MorrisonStéphane Marchand-MailletEric BrunoPublished in: ACM Multimedia (2010)
Keyphrases
- image retrieval
- image database
- input image
- image analysis
- image collections
- image understanding
- image data
- ground truth
- edge detection
- three dimensional
- rigid body
- test images
- image regions
- image classification
- image registration
- image features
- small number
- image processing algorithms
- content based retrieval
- satellite images
- image matching
- object recognition
- lighting conditions
- metadata
- image annotation
- multiresolution
- semantic annotation
- high resolution
- fully automatic
- spatial information
- keypoints
- natural images
- feature points