Copyright © 2007-2009 by Apple Inc. All Rights Reserved.
Quartz Composer Plugin
HistogramOperation A Quartz Composer plug-in that alters a source image
according to the histogram of another image.
Sample Requirements The plugin was created using the Xcode editor running
under Mac OS X 10.6.x or later.
About the sample A Quartz Composer plug-in that implements a custom
processor patch that alters an image according to the
histogram of another image using the vImage framework.
Using the Sample Open the project using the Xcode editor which can be found
in /Developer/Applications. From the main menu,
choose "Project", set "Active Configuration" to "Release",
and "Active Target" to "Build & Copy". These settings are
also available from the top left corner of the 'Overview'
pull-down window. Build the project. Once the build has
completed successfully, the plug-in can be used as a
regular QC patch in the Quartz Composer editor (also
installed under /Developer/Applications), by selecting it
from the Library - Plugin panel.
The image whose histogram is going to be changed is in the
plug-in input parameter "Source Image". The image whose
histogram will influence the result is in input parameter
Changes from Previous Versions n/a
Feedback and Bug Reports Please send all feedback about this sample to:
Please submit any bug reports about this example to