Archived posting to the Leica Users Group, 2001/07/24

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Subject: Re: [Leica] digital M
From: Johnny Deadman <john@pinkheadedbug.com>
Date: Tue, 24 Jul 2001 08:49:00 -0400

on 7/23/01 11:08 PM, Mark Rabiner at mark@rabiner.cncoffice.com wrote:

> Mxsmanic wrote:
>> 
>> Mark Rabiner writes:
>> 
>>> Why not the bokeh under the blur menu?
>>> Plug in your parameters.
>> 
>> It can't be done.  Generating bokeh requires that you have depth information
>> for
>> every point in the image, as well as a specified focus distance, a focal
>> length,
>> and an aperture.  Providing all of these would be very tedious indeed,
>> especially the depth information, which would essentially have to be painted
>> in
>> by hand, probably as a mask.
> 
> Sounds like an algorithm to me.

no, he's totally right, Mark. You need to know how far a point is from you
in the image to know how much to blur it. You don't have this information
from a single image. If you shot stereo pairs you could triangulate it.
- -- 
John Brownlow

http://www.pinkheadedbug.com

ICQ: 109343205