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Journal of Electronic Imaging

Defocus cue and saliency preserving video compression
Author(s): Meera Thapar Khanna; Santanu Chaudhury; Brejesh Lall
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Paper Abstract

There are monocular depth cues present in images or videos that aid in depth perception in two-dimensional images or videos. Our objective is to preserve the defocus depth cue present in the videos along with the salient regions during compression application. A method is provided for opportunistic bit allocation during the video compression using visual saliency information comprising both the image features, such as color and contrast, and the defocus-based depth cue. The method is divided into two steps: saliency computation followed by compression. A nonlinear method is used to combine pure and defocus saliency maps to form the final saliency map. Then quantization values are assigned on the basis of these saliency values over a frame. The experimental results show that the proposed scheme yields good results over standard H.264 compression as well as pure and defocus saliency methods.

Paper Details

Date Published: 22 December 2016
PDF: 12 pages
J. Electron. Imag. 25(6) 061626 doi: 10.1117/1.JEI.25.6.061626
Published in: Journal of Electronic Imaging Volume 25, Issue 6
Show Author Affiliations
Meera Thapar Khanna, Indian Institute of Technology Delhi (India)
Santanu Chaudhury, Indian Institute of Technology Delhi (India)
CSIR-Central Electronics Engineering Research Institute (India)
Brejesh Lall, Indian Institute of Technology Delhi (India)

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