474 search results - page 2 / 95 » Estimating Degradation Model Parameters from Character Image... |
IJON
2010
13 years 4 months ago
2010
We introduce a new causal hierarchical belief network for image segmentation. Contrary to classical tree structured (or pyramidal) models, the factor graph of the network contains...
ICDAR
2009
IEEE
13 years 3 months ago
2009
IEEE
We compare in this study two image restoration approaches for the pre-processing of printed documents: namely the Non-local Means filter and a total variation minimization approac...
ICIP
2003
IEEE
14 years 7 months ago
2003
IEEE
In this paper we consider the estimation of the unknown hyperparameters for the problem of reconstructing a high-resolution image from multiple undersampled, shifted, blurred and ...
ICIAP
1997
ACM
13 years 9 months ago
1997
ACM
This paper presents methods for detection and reconstruction of `missing' data in image sequences which can be modelled using 3-dimensional autoregressive (3DAR) models. The ...
ICDAR
2003
IEEE
13 years 11 months ago
2003
IEEE
In this paper, we propose a generalized shock model for the enhancement and restoration of degraded gray-level character images. This model is a quasi-linear hyperbolic partial di...