Re: [Bf-committers] grading w/ compositor

2011-11-08 Thread Xavier Thomas
Hi

I am desperately missing the time to finish my OpenColorIO integration
and other opensources stuff I wass doing before. I hope this situation will
change in a few weeks/months. In the meantime being the coder of the scopes
here is my toughts:

- *Scopes are slow*
 I don't know if they are threaded or not, but I found out that having the
 scopes open in image viewer really slow down the computing time. To be
 honest when doing a primary to bring the footage at a neutral stage (white
 balance, saturation, ...)  I pretty much only look at the RGB waveform and
 the Vector Scope. (never trust what I see in the image viewer output).
 Moving a param in my comp (which basically have only one input, one RGB
 curves and one viewer, and waiting 1 or 2 sec for everything to update is
 not really efficient.
 I wonder if that cannot be faster ?


With big resolution it is slow  indeed. The indea was to make it use a
background job so that it does not freeze the UI while updating (threading
is also an option). I had a patch in the tracker for this but due to some
update notifier problem it was causing lots of redraw of the image and
scope regions so it was never applied to trunk, maybe now the situation is
better and it is worth taking another look a it.



 - *Fine tuning is impossible*
 adding a point in the RGB curve and moving it slightly with the mouse to
 adjust white balance is really challenging and almost impossible to get
 perfect. perhaps there is shortcut to move the selected point which I'm not
 aware of.
 A suggestion would be to not limit the zoom in the compositor and be able
 to scale the nodes as much as we want to have a more accurate values on
 those.
 Another suggestion would be to display the coord of the selected point
 where we can enter some values ?


Blender 2.4x style was to keep Shift pressed while draging for better
precision. This seems to have disapeared in some places since 2.5

- *Min/Max of waveform are difficult to see*
 the 3 lines on the right of a waveform defines the max and min of each
 channels. a good way to start to white balance your footage is by trying to
 have those 3 lines on the same level. Right now they are kind of hard to
 see. I don't know if we can make them bigger or find a better display for
 it


I don't find them hard to see, but as the original coder of the scopes I
had some feedback where people do not understand that it is min/max and
tought it was garbage. This king of style customusation is easy for anybody
with C/OpenGL knowlage, but it would be better to have a clear goal before
messing the code just for personal ahesteic preferences.

Also the scopes permits scaling but not panning, it would be good to add
panning to them. The problem: those key combination are hard coded and not
configarable by the user keymap.


xat
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Re: [Bf-committers] grading w/ compositor

2011-11-08 Thread François T .

 *With big resolution it is slow  indeed. The indea was to make it use a*
 * background job so that it does not freeze the UI while updating
 (threading
 is also an option). I had a patch in the tracker for this but due to some
 update notifier problem it was causing lots of redraw of the image and
 scope regions so it was never applied to trunk, maybe now the situation is
 better and it is worth taking another look a it.*

- are they computed if collapsed (since we can't really close them) ? by
that I mean, if I collapse all of them except the waveform, it is the only
one computed ?



*I don't find them hard to see, but as the original coder of the scopes I*
 * had some feedback where people do not understand that it is min/max and
 tought it was garbage. This king of style customusation is easy for anybody
 with C/OpenGL knowlage, but it would be better to have a clear goal before
 messing the code just for personal ahesteic preferences.*


the min/max makes perfect sense to me and the design is great.  I just feel
like its hard to see especially when you want to make those lines match.
Plus they disappear in those rounded corners which is a bit annoying. maybe
it is the default grey background which makes it hard to see it. Like I
almost didn't noticed the grid and values with the light gray
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Re: [Bf-committers] grading w/ compositor

2011-11-08 Thread François T .
Than maybe the better would be to add themes options for the backgroung and
 grid colors for the scopes.


thought about it, but it won't solve the issue, I think some kind of fix
background behind the lines should be there. so no matter what funky theme
you got, you can still see them ?






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-- 

François Tarlier
www.francois-tarlier.com
www.linkedin.com/in/francoistarlier
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[Bf-committers] grading w/ compositor

2011-11-06 Thread François T .
Hi all,

I have been playing with the compositor and scopes today to bring footages
to neutral. I'm not even going into Color pipeline topics, but just about
controlers. I don't know if I'm the only one who things that fine tuning is
a real challenge but here is what I rekon so far.

- *Scopes are slow*
I don't know if they are threaded or not, but I found out that having the
scopes open in image viewer really slow down the computing time. To be
honest when doing a primary to bring the footage at a neutral stage (white
balance, saturation, ...)  I pretty much only look at the RGB waveform and
the Vector Scope. (never trust what I see in the image viewer output).
Moving a param in my comp (which basically have only one input, one RGB
curves and one viewer, and waiting 1 or 2 sec for everything to update is
not really efficient.
I wonder if that cannot be faster ?

- *Fine tuning is impossible*
adding a point in the RGB curve and moving it slightly with the mouse to
adjust white balance is really challenging and almost impossible to get
perfect. perhaps there is shortcut to move the selected point which I'm not
aware of.
A suggestion would be to not limit the zoom in the compositor and be able
to scale the nodes as much as we want to have a more accurate values on
those.
Another suggestion would be to display the coord of the selected point
where we can enter some values ?

- *Min/Max of waveform are difficult to see*
the 3 lines on the right of a waveform defines the max and min of each
channels. a good way to start to white balance your footage is by trying to
have those 3 lines on the same level. Right now they are kind of hard to
see. I don't know if we can make them bigger or find a better display for it



That's it so far, I don't know if you have ideas or suggestions on how to
improve those.


cheers,

F.

-- 

François Tarlier
www.francois-tarlier.com
www.linkedin.com/in/francoistarlier
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