On Wed, 27 May 2009, Dongsoo, Nathaniel Kim wrote: > Hi Guennadi, > > In my opinion (in totally user aspect) those CIDs you mentioned do not > fit in the purpose. Only low-pass filtering control could be > considered as a colorfx, even though low-pass filtering is not a color > effect it could be possible to sense the meaning of effect on it. How > about making a new CID for band-stop filtering control and > V4L2_COLORFX_BORDER_DENOISING for low-pass filter? Maybe, let's see what others say. Although, the low-pass filter doesn't seem to be directly related to colour-transformation to me. > BTW, would you give more information about "fluorescent light > band-stop filter" in detail? Because if you mean flicker control > caused by power line frequency, 50Hz...60Hz thing, I think we already > have one for that. As far as I know, V4L2_CID_POWER_LINE_FREQUENCY is > for that flickering control. No, here's an excerpt from a datasheet (not for the camera I'm implementing this, but it's the same parameter, I think): COMJ[2] - Band filter enable. After adjust frame rate to match indoor light frequency, this bit enable a different exposure algorithm to cut light band induced by fluorescent light. Not sure though how they reduce the fluorescent light by adjusting the exposure algorithm. Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer http://www.open-technology.de/ -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
