[Bug 730510] facedetect: improve performance

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=730510
  GStreamer | gst-plugins-bad | 1.x

Stefan Sauer (gstreamer, gtkdoc dev) <ensonic> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #277662|none                        |reviewed
             status|                            |

--- Comment #2 from Stefan Sauer (gstreamer, gtkdoc dev) <ensonic at sonicpulse.de> 2014-07-23 20:11:04 UTC ---
Review of attachment 277662:
 --> (https://bugzilla.gnome.org/review?bug=730510&attachment=277662)

Sounds like a good idea and it is not a lot of code. Maybe change the comment a
bit. It would not only save CPU on black images, but on image with very little
change in general.

::: ext/opencv/gstfacedetect.c
@@ +542,3 @@
+  } else {
+    GST_LOG_OBJECT (filter,
+        "Calculated stddev %f lesser than min_stddev %" G_GINT32_FORMAT

%lf as img_stddev is a double?

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