402 search results - page 15 / 81 » Document Image Enhancement Using Directional Wavelet |
84
Voted
ICIP
2004
IEEE
15 years 12 months ago
2004
IEEE
Using the concepts of two-dimensional Hilbert transform and analytic signal, we construct a new quaternion wavelet transform (QWT). The QWT forms a tight frame and can be efficien...
ICASSP
2011
IEEE
14 years 2 months ago
2011
IEEE
This paper describes a complete low-complexity imaging system based on a single MEMS scanning mirror and a single photodetector, together with customized image enhancement algorit...
72
Voted
ICDAR
1999
IEEE
15 years 2 months ago
1999
IEEE
In this article, we propose a new method that combines the use of a global threshold and a window-based scheme for computing local thresholds. The latter scheme compares the contr...
TIP
2010
2010
The Discrete Shearlet Transform: A New Directional Transform and Compactly Supported Shearlet Frames
14 years 8 months ago
It is now widely acknowledged that analyzing the intrinsic geometrical features of the underlying image is essential in many applications including image processing. In order to a...
ICIP
2001
IEEE
15 years 12 months ago
2001
IEEE
In this paper, we propose image restoration algorithms based on adaptive wavelet?domain statistical models. We present a method to estimate the model parameters from the observati...