To evaluate in (1), we need the (local) contrast map of,, dissimilarity map between continuous-tone frames and,, and the similarity map between the successive halftone frames and,.
Therefore, to evaluate in (7), we need the local contrast map of,, similarity map between continuous-tone frames and,, and the dissimilarity map between the successive halftone frames and,.
These are the regions where DWE is likely to be observed, if the corresponding halftone pixels do not "sufficiently" change between the successive halftone frames.
Therefore, brighter regions in this image correspond to areas where DWE is less likely to be observed, if the corresponding halftone pixels do not "sufficiently" change between the successive halftone frames.
In [23], the similarity between successive frames measured by the PSNR is used to skip frames adaptively.
These somewhat lower peak response rates found by McKeeff et al. (our peak responses were observed around 10 18 Hz) might be due to the fact that in their study, the images were unrelated to each other, that is, the identity and expression of the faces differed between successive frames of the presented stimulus sequence.
Namely, the analysis of the video sequences considered through the article suggests that it is not necessary to compute the difference between successive frames, but it is enough every three frames.
It does not depend on the motion information between successive frames, but on the disparity information between stereo views.
