By Topic

Fast DCT-based spatial domain interpolation of blocks in images

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Z. Alkachouh ; CNAM-Electron., Paris, France ; M. G. Bellanger

An efficient method is presented to restore a block in an image, using a reduced set of border pixels. The basic assumption is that, if the set of pixels consisting of the missing block and its border pixels is transformed by the DCT, the high frequency coefficients obtained can be set to zero. A system of linear equations results, whose solution yields approximations for the values of the lost pixels. In this interpolation scheme, only eight border pixels are used in the computation of any missing pixel. Simulation results show that the approach generally outperforms alternative methods at a smaller computational cost

Published in:

IEEE Transactions on Image Processing  (Volume:9 ,  Issue: 4 )