#9853 NORM 1.5-har: XO-1.5 low camera image quality

[Zarro Boogs per Child]

#9853: XO-1.5 low camera image quality
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           Reporter:  dsd       |       Owner:  dsaxena       
               Type:  defect    |      Status:  new           
           Priority:  normal    |   Milestone:  1.5-hardware-C
          Component:  kernel    |     Version:  1.5-B3        
         Resolution:            |    Keywords:                
        Next_action:  diagnose  |    Verified:  0             
Deployment_affected:            |   Blockedby:                
           Blocking:            |  
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Comment(by bemasc):

 Replying to [comment:17 corbet]:
 > If there are unimplemented controls which make sense to have (i.e. don't
 ask for V4L2_CID_AUDIO_BASS), let me know, and I'll see what's involved in
 wiring them up.

 You ask for a feature request, you get a feature request.  The missing
 controls that would be of most interest to me are, in descending order

 V4L2_CID_GAIN
 V4L2_CID_AUTO_WHITE_BALANCE
 V4L2_CID_SHARPNESS
 V4L2_CID_GAMMA
 V4L2_CID_RED_BALANCE
 V4L2_CID_BLUE_BALANCE
 V4L2_CID_AUTOGAIN

 It looks like AUTO_WHITE_BALANCE and AUTOGAIN should be easy to implement.
 I also see controls for edge enhancement and red and blue gain, so those
 should be relatively easy too.  COM13_GAMMA claims to enable/disable
 gamma; doing more presumably requires rewriting the gamma table.  I don't
 see a way to control GAIN, unfortunately... maybe by setting the upper and
 lower bounds on AGC to be equal?

 It would also be really nice to have the Night Mode controls exposed.
 Night mode appears to work by slowing the framerate and extending the
 integration time.  At least one teacher is using the camera to take
 pictures of the moon through a telescope, so night mode may be quite
 relevant.  Night mode maps most nearly to V4L2_CID_EXPOSURE or
 V4L2_CID_EXPOSURE_ABSOLUTE.

 My personal interest is mostly in the raw Bayer mode.  Some of these
 controls probably don't affect the raw Bayer output, but I can't guess
 which.

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Ticket URL: <http://dev.laptop.org/ticket/9853#comment:19>
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