[FFmpeg-devel] additive frame change detection algorithm

[Michael Niedermayer]

On Wed, May 11, 2016 at 10:51:32AM -0500, Dave Hess wrote:
> >you need something that gives more weight to large localized changes
> >likely
> 
> Yes, good point.  How about additional parameters to the function that
> specify a grid pattern and if any individual section in that grid meets the
> threshold, then it returns true?  It could even have another parameter to
> set the number of changed sections required before the whole frame is
> considered changed.
> 
>  frame_change(ref_frame, threshold, grid_rows, grid_columns,
> section_threshold)

i would use squares and only one paremeter than  grid_rows, grid_columns


> 
> And maybe even more parameters to disregard certain sections (or rows or
> columns) from being analyzed altogether (if an icon in the system tray or
> task bar starts flashing, etc.).  Might be difficult to implement that.  I'd
> need to think about that more.
> 
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-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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