[opendtv] Re: Mediaflo Technology

  • From: Craig Birkmaier <craig@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Tue, 14 Nov 2006 09:33:59 -0500

At 11:27 AM -0500 11/13/06, Mark Schubin wrote:
Craig Birkmaier wrote:
Perhaps you could focus on the cameras that are shooting with 2/3 inch CCD sensors with 2 Mpixel resolution and determine the relative MTF of 1920 x 1080 versus 1280 x 720, as produced by the same camera with the same lens.
The same camera with the same lens will have the same MTF, whether it is putting out 1920 x 1080 or 1280 x 720. It will have more contrast at 1280 than at 1920, but that contrast should be the same whether the camera is in 720 mode or 1080 mode (not counting some minor losses in scaling).


I think I understand. You get a contrast benefit with the 720P output, due to resampling. But this benefit is there in both 720P and 1080i/p modes.

I think you are saying the MTF of the 720P signal is improved because of the oversampling, bringing it up to the same or similar level as the 1080i/p signal.

Is this correct?


You can UNSUBSCRIBE from the OpenDTV list in two ways:

- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word 
unsubscribe in the subject line.

Other related posts: