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Multimedia Tools and Applications

, Volume 78, Issue 1, pp 537–553 | Cite as

Block compressed sampling of image signals by saliency based adaptive partitioning

  • Siwang ZhouEmail author
  • Zhineng Chen
  • Qian Zhong
  • Heng Li
Article
  • 90 Downloads

Abstract

In recent years, block compressed sampling (BCS) has emerged as a considerable attractive sampling technology for image acquisition. However, the general BCS approaches ignore the information distribution in the same image sub-block, and may lead to unfair allocation of sampling resources. In this paper, we propose a novel compressed sampling scheme by employing the idea of adaptive partition. In the proposed scheme, images are adaptively partitioned based on their saliency information through clustering, and pixels with similar saliency are gathered in the same sub-blocks. Sampling rates for those blocks, in turn, are computed on the basis of their saliency values, respectively. Therefore the sampling resources are allocated with fairer and more equitable sharing by all sub-blocks. Experimental results show that the proposed scheme has better visual effect and obtains higher image reconstruction accuracy than existing ones.

Keywords

Compressed sampling Image Saliency Clustering 

Notes

Acknowledgment

This work is supported by CERNET Innovation Project of China under Grant Number NGII20160323.

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.College of Computer Science and Electrical EngineeringHunan UniversityChangshaChina
  2. 2.Institute of AutomationChinese Academy of SciencesBeijingChina

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