Defocus cue and saliency preserving video compression

Meera Thapar Khanna; Santanu Chaudhury; Brejesh Lall

doi:10.1117/1.JEI.25.6.061626

22 December 2016 Defocus cue and saliency preserving video compression

Meera Thapar Khanna, Santanu Chaudhury, Brejesh Lall

Author Affiliations +

Journal of Electronic Imaging, Vol. 25, Issue 6, 061626 (December 2016). https://doi.org/10.1117/1.JEI.25.6.061626

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.

Citation Download Citation

Meera Thapar Khanna, Santanu Chaudhury, and Brejesh Lall "Defocus cue and saliency preserving video compression," Journal of Electronic Imaging 25(6), 061626 (22 December 2016). https://doi.org/10.1117/1.JEI.25.6.061626

Received: 4 April 2016; Accepted: 29 November 2016; Published: 22 December 2016

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