Progressive video streaming apparatus and method based on visual perception

A progressive video streaming method based on a visual perception, the progressive video streaming method comprising:

• detecting gaze information including at least one of a location of a focus and a viewing angle of a user;
• determining video playback quality layers, based on the detected gaze information;
• requesting video data and receiving the video data, using a visual perception priority based on the detected gaze information;
• and
• playing back the received video data by controlling an interactive delay to be reduced below a selected criterion, while reducing a visually recognized quality change in the received video data below another selected criterion, wherein the determining comprises equalizing a visual perception cutoff function based on a spatial frequency to an average spatial frequency, based on a size of a slice determined by a number of horizontal pixels, and determining the video playback quality layers.

A progressive video streaming apparatus based on a visual perception, the progressive video streaming apparatus comprising:

• a gaze detector to detect gaze information including at least one of a location of a focus and a viewing angle of a user;
• a video playback quality determiner to determine video playback quality layers, based on the detected gaze information;
• and
• a progressive streaming receiver to request video data and receive the video data, using a visual perception priority based on the detected gaze information,
• wherein the progressive streaming receiver transmits, first, video data with a high priority based on a visual perception sensitivity of a user, and enables a playback order to be determined based on the visual perception sensitivity.