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Reduction of Flicker in Four-Stroke Motion of Color Images.


ABSTRACT: When two sequential video frames extracted from a single video clip are followed by the negative of the two frames, a viewer often experiences a visual illusion whereby a scene in the frames continuously moves in a single direction (four-stroke apparent motion). To create a four-stroke apparent motion display, the image intensities of the whole of the second pair of images are reversed. However, this intensity reversal creates a strong impression of flicker that can be undesirable for comfortable viewing. This study reports that four-stroke apparent motion can be induced by only reversing the luminance intensities in those spatial areas which contain motion signals in high-pass filtered images. This use of only a partial reversal of image intensities greatly reduces the apparent flicker in the display while retaining motion perception.

SUBMITTER: Kawabe T 

PROVIDER: S-EPMC5768284 | biostudies-literature | 2018 Jan-Feb

REPOSITORIES: biostudies-literature

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Reduction of Flicker in Four-Stroke Motion of Color Images.

Kawabe Takahiro T   Nishida Shin'ya S  

i-Perception 20180111 1


When two sequential video frames extracted from a single video clip are followed by the negative of the two frames, a viewer often experiences a visual illusion whereby a scene in the frames continuously moves in a single direction (four-stroke apparent motion). To create a four-stroke apparent motion display, the image intensities of the whole of the second pair of images are reversed. However, this intensity reversal creates a strong impression of flicker that can be undesirable for comfortabl  ...[more]

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