Message ID | 20200619092725.19109-2-david.plowman@raspberrypi.com |
---|---|
State | Superseded |
Headers | show |
Series |
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Related | show |
Hi David, Thank you for the patch. On Fri, Jun 19, 2020 at 10:27:23AM +0100, David Plowman wrote: > The control is a single float value with minimum, default and maximum > values. Please read the description for more details. > > Signed-off-by: David Plowman <david.plowman@raspberrypi.com> > --- > src/libcamera/control_ids.yaml | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml > index 77ebc3f..1bc1b10 100644 > --- a/src/libcamera/control_ids.yaml > +++ b/src/libcamera/control_ids.yaml > @@ -239,4 +239,15 @@ controls: > pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels > control can only be returned in metadata. > size: [4] > + > + - Sharpness: > + type: float > + description: | > + The strength of the sharpening to be applied. Should we specify that sharpening is not applied to RAW streams ? Or do you expect hardware that would be able to apply sharpening in the Bayer domain ? > The minimum value > + means minimal (or preferably no) sharpening, the maximum should > + signify extremely high levels of sharpening (higher than anyone could > + reasonably want), and the default value should give a "reasonable" > + level, suitable for many use cases. We recommand that the amount > + of sharpening applied should be "approximately" proportional to this > + parameter. I propose detailing this a bit further, to explain that 0 means no sharpening. How about the following ? A value of 0.0 means no sharpening. The minimum value means minimal sharpening, and shall be 0.0 unless the camera can't disable sharpening completely. The default value shall give a "reasonable" level or sharpening, suitable for most use cases. The maximum value may apply extremely high levels of sharpening, higher than anyone could reasonably want. Negative values are not allowed. > ...
Hi Laurent Thanks for the feedback. On Mon, 22 Jun 2020 at 03:07, Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote: > > Hi David, > > Thank you for the patch. > > On Fri, Jun 19, 2020 at 10:27:23AM +0100, David Plowman wrote: > > The control is a single float value with minimum, default and maximum > > values. Please read the description for more details. > > > > Signed-off-by: David Plowman <david.plowman@raspberrypi.com> > > --- > > src/libcamera/control_ids.yaml | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > > diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml > > index 77ebc3f..1bc1b10 100644 > > --- a/src/libcamera/control_ids.yaml > > +++ b/src/libcamera/control_ids.yaml > > @@ -239,4 +239,15 @@ controls: > > pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels > > control can only be returned in metadata. > > size: [4] > > + > > + - Sharpness: > > + type: float > > + description: | > > + The strength of the sharpening to be applied. > > Should we specify that sharpening is not applied to RAW streams ? Or do > you expect hardware that would be able to apply sharpening in the Bayer > domain ? Agreed. Sharpening a raw stream would seem strange. You'd probably have to have done all kinds of other stuff before sharpening would make much sense, at which point it's hardly raw any more. > > > The minimum value > > + means minimal (or preferably no) sharpening, the maximum should > > + signify extremely high levels of sharpening (higher than anyone could > > + reasonably want), and the default value should give a "reasonable" > > + level, suitable for many use cases. We recommand that the amount > > + of sharpening applied should be "approximately" proportional to this > > + parameter. > > I propose detailing this a bit further, to explain that 0 means no > sharpening. How about the following ? > > A value of 0.0 means no sharpening. The minimum value means > minimal sharpening, and shall be 0.0 unless the camera can't > disable sharpening completely. The default value shall give a > "reasonable" level or sharpening, suitable for most use cases. > The maximum value may apply extremely high levels of sharpening, > higher than anyone could reasonably want. Negative values are > not allowed. Yes, I like that. I'll put this all in v2 of the patch. Best regards David > > > ... > > -- > Regards, > > Laurent Pinchart
diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml index 77ebc3f..1bc1b10 100644 --- a/src/libcamera/control_ids.yaml +++ b/src/libcamera/control_ids.yaml @@ -239,4 +239,15 @@ controls: pixel range (as if pixels ranged from 0 to 65535). The SensorBlackLevels control can only be returned in metadata. size: [4] + + - Sharpness: + type: float + description: | + The strength of the sharpening to be applied. The minimum value + means minimal (or preferably no) sharpening, the maximum should + signify extremely high levels of sharpening (higher than anyone could + reasonably want), and the default value should give a "reasonable" + level, suitable for many use cases. We recommand that the amount + of sharpening applied should be "approximately" proportional to this + parameter. ...
The control is a single float value with minimum, default and maximum values. Please read the description for more details. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> --- src/libcamera/control_ids.yaml | 11 +++++++++++ 1 file changed, 11 insertions(+)