Image up-sampling using total-variation regularization with a new observation model

HA Aly, E Dubois - IEEE Transactions on Image Processing, 2005 - ieeexplore.ieee.org
This paper presents a new formulation of the regularized image up-sampling problem that
incorporates models of the image acquisition and display processes. We give a new analytic …

Markov random field model-based edge-directed image interpolation

M Li, TQ Nguyen - IEEE Transactions on Image Processing, 2008 - ieeexplore.ieee.org
This paper presents an edge-directed image interpolation algorithm. In the proposed
algorithm, the edge directions are implicitly estimated with a statistical-based approach. In …

Modified edge-directed interpolation for images

WS Tam, CW Kok, WC Siu - Journal of Electronic imaging, 2010 - spiedigitallibrary.org
We present a modification of the new edge-directed interpolation method that eliminates the
prediction error accumulation problem by adopting a modified training window structure, and …

A low-cost high-quality adaptive scalar for real-time multimedia applications

SL Chen, HY Huang, CH Luo - IEEE Transactions on circuits …, 2011 - ieeexplore.ieee.org
A novel scaling algorithm is proposed for the implementation of 2-D image scalar. The
algorithm consists of a bilinear interpolation, a clamp filter, and a sharpening spatial filter …

Canny edge based image expansion

H Shi, R Ward - … IEEE International Symposium on Circuits and …, 2002 - ieeexplore.ieee.org
In this paper, a Canny edge-based image expansion method is introduced. Our proposed
expansion method outperforms the pixel replication, the bilinear interpolation and the …

Nonlocal edge-directed interpolation

X Zhang, S Ma, Y Zhang, L Zhang, W Gao - Pacific-Rim Conference on …, 2009 - Springer
In this paper, we proposed a new edge-directed image interpolation algorithm which can
preserve the edge features and natural appearance of images efficiently. In the proposed …

Resolution-converting apparatus and method

HY Lee, C Kim, D Park, S Lee, A Lukin - US Patent 7,876,979, 2011 - Google Patents
The resolution-converting method comprises steps of apply ing an edge-directed
interpolation to an input image and producing an intermediate image; converting a sampling …

Adaptive directional window selection for edge-directed interpolation

CS Wong, WC Siu - 2010 Proceedings of 19th International …, 2010 - ieeexplore.ieee.org
In this paper, we present an adaptive directional window selection for the edge-directed
interpolation. The new window selection can solve the problem of covariance mismatch in …

Specification of the observation model for regularized image up-sampling

HA Aly, E Dubois - IEEE transactions on image processing, 2005 - ieeexplore.ieee.org
Regularization is one of the most promising methods for image up-sampling, which is an ill-
posed inverse problem. A key element of such a regularization approach is the observation …

A single image interpolation scheme for enhanced super resolution in bio-medical imaging

P Akhtar, F Azhar - 2010 4th international conference on …, 2010 - ieeexplore.ieee.org
In this paper we illustrate a novel image interpolation method based on the amalgamation of
bicubic interpolation and 2D interpolation filter. First, bicubic interpolation algorithm is …