Differences

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--- teaching:video_voting:videos [2019/10/01 13:36] – anthony
+++ teaching:video_voting:videos [2019/10/01 14:17] (current) – anthony
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 ====== Video voting examples ======
+\\
 ===== The video that the class watched =====
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 <iframe src="https://player.vimeo.com/video/361565808" width="640" height="564" frameborder="0" allow="autoplay; fullscreen" allowfullscreen></iframe>
 </html>
+\\
 ===== The same video with bar graphs showing the class' votes at every point in time =====
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 ==== YUV decomposition of the video taken of the class voting ====
+The original footage of the class holding up their cards has been blurred to obscure students' identities. Only the luminance (black-white) channel has been blurred, which leaves the colors from the cards with a sharp-edged appearance. The three panels at the right show the three YUV channels into which the footage can be split for further analysis.
+The middle-right panel (the U plane) is analyzed to count the number of yellow and blue cards being held up during each frame of video of the class. These counts are used to draw the bar graph at the upper left.
 <html>