Hello Christian,<br><br>Thanks for your guidance! I took a look at semantic_at_c() and get_color() and they seem to do the trick!<br><br>Here&#39;s a couple of more questions. I&#39;ve posted a compiling, annotated code at<br>

<br><a href="http://boost.codepad.org/Fy2vP73l">http://boost.codepad.org/Fy2vP73l</a><br><br>Below is the more elaborate description of my questions which can be found in the code:<br><br>1. Can I specify which channel to get in nth_channel_view()? For example, if I want to set the red channel to 255 for all the pixels, I would do gil::fil_pixels(gil::nth_channel_view(view, 0), 255). However, that only works if our view is rgb8 or bgr8, not argb8. Is there a way I can say something like gil::fill_pixels(gil::nth_channel_view(view, gil::find_channel_for_view(view, gil::red_t())), 255) ???<br>

<br>2. This compiles<br><br>gil::gil_function_requires&lt;gil::ImageViewConcept&lt;int&gt; &gt;();<br><br>Strange. Any ideas?<br><br>Best regards,<br>Chris Yuen<br><br>P.S. I am definitely interested in reviewing the extension! Apparently I&#39;m a begginer in GIL. How would you like me to review and where should I write to?<br>