Exploring Video Streams using Slit-Tear Visualizations: Difference between revisions

Revision as of 12:46, 25 May 2009

Authors

Short description

Video slicing — a variant of slit scanning in photography — extracts a scan line from a video frame and successively adds that line to a composite image over time. The composite image becomes a time line, where its visual patterns reflect changes in a particular area of the video stream. We extend this idea of video slicing by allowing users to draw marks anywhere on the source video to capture areas of interest. These marks, which we call slit-tears, are used in place of a scan line, and the resulting composite timeline image provides a much richer visualization of the video data. Depending on how tears are placed, they can accentuate motion, small changes, directional movement, and relational patterns.

[Anthony Tang, Saul Greenberg, Sidney Fels, 2008]

Suitable Datatypes

This method can be applied to live video as well as captured AVI files where each frame is either computed seperately or completely in advance, together with its successors. The latter is only relevant to non-live video.

Figures

Evaluation

References

[Mazza and Dimitrova, 2004] Mazza, Ricardo; Dimitrova, Vania. Visualising student tracking data to support instructors in web-based distance education. In Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters, pp. 154-161. 2004.

Evaluation References

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 == Short description ==
-{{Quotation|Video slicing—a variant of slit scanning in photography—extracts a scan line from a video frame and successively adds that line to a composite image over time. The composite image becomes a time line, where its visual patterns reflect changes in a particular area of the video stream. We extend this idea of video slicing by allowing users to draw marks anywhere on the source video to capture areas of interest. These marks, which we call slit-tears, are used in place of a scan line, and the resulting composite timeline image provides a much richer visualization of the video data. Depending on how tears are placed, they can accentuate motion, small changes, directional movement, and relational patterns.| [Anthony Tang, Saul Greenberg, Sidney Fels, 2008]}}
+{{Quotation|Video slicing — a variant of slit scanning in photography — extracts a scan line from a video frame and successively adds that line to a composite image over time. The composite image becomes a time line, where its visual patterns reflect changes in a particular area of the video stream. We extend this idea of video slicing by allowing users to draw marks anywhere on the source video to capture areas of interest. These marks, which we call slit-tears, are used in place of a scan line, and the resulting composite timeline image provides a much richer visualization of the video data. Depending on how tears are placed, they can accentuate motion, small changes, directional movement, and relational patterns.| [Anthony Tang, Saul Greenberg, Sidney Fels, 2008]}}
-[[category: techniques]]
+== Suitable Datatypes ==
+This method can be applied to live video as well as captured AVI files where each frame is either computed seperately or completely in advance, together with its successors. The latter is only relevant to non-live video.
+== Figures ==
+== Evaluation ==
+== References ==
+[Mazza and Dimitrova, 2004] Mazza, Ricardo; Dimitrova, Vania. [http://doi.acm.org/10.1145/1013367.1013393 Visualising student tracking data to support instructors in web-based distance education.] In ''Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters'', pp. 154-161. 2004.
+== Evaluation References ==
+[[Category:Techniques]]