Winter wavefront - animation of HEVC structure and processing

[Parabola]

Just for fun and education we made a slow-motion SVG animation showing how HEVC encoders and decoders might process coding units in a four-thread wavefront scheme.

http://www.parabolaresearch.com/blog/2013-12-01-hevc-wavefront-animation.html

Hope this is interesting/entertaining, feel free to show and share.

[benwaggoner]

This is truly awesome.

[STaRGaZeR]

Great stuff, thanks for sharing!

[MilSF]

Just curious, is there a computational advantage to going top left to bottom right, or is this a function of how the codec itself is structured?

[benwaggoner]

Just curious, is there a computational advantage to going top left to bottom right, or is this a function of how the codec itself is structured?
That's how the codec, and pretty much every mainstream codec is structured.

Left-Right Top-Bottom was established in the first electronic TV cathode ray tube systems.

And I'll guess CRT was that way because English was Philo T. Farnsworth's native language, which is read left-right, top-bottom :).

[pieter3d]

Within the Coding tree, it is so-called Z order (see here (http://i.imgur.com/xZdoWlA.png)). The neat thing here is that you can use a single incrementing number, and the x and y coordinate of the positions are the even and odd bits of the number, respectively.