CAPTCHA for crowdsourced image annotation: directions and efficiency analysis.

Mohammad Moradi Mohammad Reza Keyvanpour

Published in: Aslib J. Inf. Manag. (2022)

Keyphrases

image annotation
multi modal
image understanding
image retrieval
multi label
automatic image annotation
high level
visual features
higher level
semantic gap
web images
decision trees
data sets
text categorization
image classification
image content
object detection
multi class
similarity measure
neural network