Image Modification Based on Spatial Frequency Components for Visual Attention Retargeting

Abstract

SUMMARYIt is estimated that 80% of the information entering the human brain is obtained through the eyes. Therefore, it is commonly believed that drawing human attention to particular objects is effective in assisting human activities. In this paper, we propose a novel image modification method for guiding user attention to specific regions of interest by using a novel saliency map model based on spatial frequency components. We modify the frequency components on the basis of the obtained saliency map to decrease the visual saliency outside the specified region. By applying our modification method to an image, human attention can be guided to the specified region because the saliency inside the region is higher than that outside the region. Using gaze measurements, we show that the proposed saliency map matches well with the distribution of actual human attention. Moreover, we evaluate the effectiveness of the proposed modification method by using an eye tracking system. key words: visual attention, visual saliency map, attention retargeting, wavelet analysis

Attention retargeting using saliency map and projector–camera system in real space

“…The orientation‐based image modification method proposed by Mateescu et al rotates the ROI by predicting the angle of rotation at which the ROI saliency becomes the highest saliency of the entire image. Takimoto et al proposed an orientation‐based method using wavelet transform. In this method, a visual saliency map based on frequency components obtained from octave division using a frequency analysis method is employed.…”

“…There is much evidence indicating the correlation between visual attention and the visual saliency map . Several studies have been conducted on visual attention‐retargeting methods that employ visual saliency maps to guide a viewer's attention to an ROI . These are divided into two groups: orientation‐based methods and color‐based methods.…”