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Machine reading of camera-held low quality text images: An ICA-based image enhancement approach for improving OCR accuracy.
Utpal Garain
Atishay Jain
Anjan Maity
Bhabatosh Chanda
Published in:
ICPR (2008)
Keyphrases
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image enhancement
low quality
gamma correction
image analysis
contrast enhancement
edge detection
color image enhancement
high quality
fingerprint images
image contrast enhancement
histogram equalization
image processing
enhanced image
homomorphic filtering
ccd camera
transfer function
input image
color restoration
poor quality
minutiae extraction
feature extraction
region of interest
optical character recognition
lighting conditions
gray scale
low quality images
dynamic range compression
computer vision
computational complexity
multiresolution
image contrast
fingerprint recognition
denoising
imaging devices
text lines