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Defocus cue and saliency preserving video compression
M.T. Khanna, , B. Lall
Published in SPIE
2016
Volume: 25
   
Issue: 6
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. © 2016 SPIE and IS&T.
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Figures & Tables (14)
  • Figure-0
    Fig. 1 (a) Original image, (b) standard JPEG compressed image, ... Expand
  • Figure-1
    Fig. 2 ROC curves for our technique and obtained by techniques ... Expand
  • Figure-2
    Fig. 4 Consistency between successive frames original frames ... Expand
  • Figure-3
    Fig. 3 Saliency map results. Top to bottom original images, ... Expand
  • Figure-4
    Table 1 Video sequences.
  • Figure-5
    Table 3 Comparison results for PSNR with H.264, pure, defocus, ... Expand
  • Figure-6
    Fig. 5 Comparison between rate and distortion between different ... Expand
  • Figure-7
    Fig. 6 (a) Input image, (b) fusion saliencymap (pure saliency ... Expand
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About the journal
JournalData powered by SciSpaceJournal of Electronic Imaging
PublisherData powered by SciSpaceSPIE
ISSN10179909