Text Detection in Images Based on Unsupervised Classification of High-Frequency Wavelet Coefficients.
Julinda GllavataRalph EwerthBernd FreislebenPublished in: ICPR (1) (2004)
Keyphrases
- high frequency
- wavelet coefficients
- text detection
- low frequency
- subband
- wavelet transform
- wavelet domain
- discrete wavelet transform
- multiresolution
- visual quality
- multiscale
- wavelet decomposition
- image denoising
- input image
- object recognition
- video analysis
- high resolution
- image compression
- image data
- bit rate
- image analysis
- filter bank
- image registration
- hyperspectral images
- frequency band
- segmentation algorithm
- frequency domain
- edge detection
- denoising
- similarity measure
- test images
- satellite images
- image segmentation
- natural images
- image quality