--- In Avid-L2@yahoogroups.com, Christian Foerster <public@...> wrote:
<<To me this translates to: Human vision most sensitive to green -> we get mos
> t of the perceived sharpness from the green channel -> we want to emphasize
> this channel>>
Close, but not exactly. We are more sensitive to luminance differences than chrominance differences. In component video, the the luminance channel "Y" is the largest signal. And it gets used to recreate green. I think that is where you are coming to the conclusion above.
"Green doesn't need to be transmitted as a separate signal since it can be inferred from the "Y, B-Y, R-Y" combination. The display device knows how bright the image is from the Y component, and since it knows how much is blue and red, it figures the rest must be green so it fills it in."
copied from:
<<http://www.projectorcentral.com/component.htm>>
Thursday, September 6, 2012
[Avid-L2] Re: [OT] Calculation of luma SD vs. HD
__._,_.___
Search the official Complete Avid-L archives at: http://archives.bengrosser.com/avid/
.
__,_._,___
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment