After an evaluation, GNOME has moved from Bugzilla to GitLab. Learn more about GitLab.
No new issues can be reported in GNOME Bugzilla anymore.
To report an issue in a GNOME project, go to GNOME GitLab.
Do not go to GNOME Gitlab for: Bluefish, Doxygen, GnuCash, GStreamer, java-gnome, LDTP, NetworkManager, Tomboy.
Bug 748994 - videofilters: Add plugin for pseudo-color effect
videofilters: Add plugin for pseudo-color effect
Status: RESOLVED OBSOLETE
Product: GStreamer
Classification: Platform
Component: gst-plugins-bad
unspecified
Other Linux
: Normal enhancement
: git master
Assigned To: GStreamer Maintainers
GStreamer Maintainers
Depends on:
Blocks:
 
 
Reported: 2015-05-06 06:15 UTC by RaviKiran
Modified: 2018-11-03 13:35 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
pseudo-color plugin (16.72 KB, patch)
2015-05-06 06:17 UTC, RaviKiran 		none Details | Review

Description RaviKiran 2015-05-06 06:15:07 UTC 
Add a new plugin for pseudo-color effect.
http://en.wikipedia.org/wiki/False_color#Pseudocolor

This plugin takes Gray scale image as input and adds color to it based on hue, saturation properties (HSL to RGB). And produces RGB output.

Although videobalance element can adjust hue/saturation of an image, it doesn't add color to a gray scale image.
Comment 1 RaviKiran 2015-05-06 06:17:08 UTC 
Created attachment 302957 [details] [review]
pseudo-color plugin

Patch attached for propsed plugin. Please review.
Comment 2 RaviKiran 2015-10-30 05:28:09 UTC 
ping
Comment 3 Jānis Šmēdiņš 2016-04-21 14:40:07 UTC 
Hey! Not bad, but there are a few things I'd mention.

Firstly, this is not strictly pseudo-color mapping, but rather "colorise" effect. For pseudo-color effect the applied color (hue/value) should be dependent on the value of input pixel (i.e., different colors for different shades of grey).

Secondly, I believe processing in YUV colourspace would be more efficient, as  grey plane (Y) can be retained unmodified, and colour planes (UV) can be simply appended to the GstBuffer.
Comment 4 GStreamer system administrator 2018-11-03 13:35:02 UTC 
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/issues/249.