Game-based image semantic CAPTCHA on handset devices.

Tzu-I Yang Chorng-Shiuh Koong Chien-Chao Tseng

Published in: Multim. Tools Appl. (2015)

Keyphrases

image features
input image
image data
single image
image regions
template matching
high resolution
multiscale
image classification
image analysis
test images
low level
image retrieval
image pixels
image representation
region of interest
image set
image structure
computer vision
imaging devices
hough transform
edge detection
similarity measure
image segmentation
image matching
keypoints
medical images
lighting conditions
mobile devices