Saliency Preservation in Low-Resolution Grayscale Images

  • Shivanthan YohanandanEmail author
  • Andy Song
  • Adrian G. Dyer
  • Dacheng Tao
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11210)


Visual salience detection originated over 500 million years ago and is one of nature’s most efficient mechanisms. In contrast, many state-of-the-art computational saliency models are complex and inefficient. Most saliency models process high-resolution color images; however, insights into the evolutionary origins of visual salience detection suggest that achromatic low-resolution vision is essential to its speed and efficiency. Previous studies showed that low-resolution color and high-resolution grayscale images preserve saliency information. However, to our knowledge, no one has investigated whether saliency is preserved in low-resolution grayscale (LG) images. In this study, we explain the biological and computational motivation for LG, and show, through a range of human eye-tracking and computational modeling experiments, that saliency information is preserved in LG images. Moreover, we show that using LG images leads to significant speedups in model training and detection times and conclude by proposing LG images for fast and efficient salience detection.


Saliency detection Fully convolutional network Peripheral vision 



This research was supported by an Australian Postgraduate Award scholarship, the Professor Robert and Josephine Shanks scholarship, and Australian Research Council grants FL-170100117, DP-180103424, and LP-150100671. The authors wish to thank the eye tracking participants for volunteering their time and Mr Wei Li for helping with the experiments.


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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  • Shivanthan Yohanandan
    • 1
    Email author
  • Andy Song
    • 1
  • Adrian G. Dyer
    • 1
  • Dacheng Tao
    • 2
  1. 1.RMIT UniversityMelbourneAustralia
  2. 2.UBTECH Sydney AI Centre, SIT, FEITThe University of SydneySydneyAustralia

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