On Sat, 10 Feb 2001 12:16:15 -0800 bjs ([EMAIL PROTECTED]) wrote:
I have a Pascal program that takes N files at arbitrary exposure levels and
combines them into one "longpass" result. It accounts for charge bleeding
and a number of other issues. The result has none of the gross errors
break
-Original Message-
From: bjs [SMTP:[EMAIL PROTECTED]]
Sent: Saturday, February 10, 2001 9:16 PM
To: [EMAIL PROTECTED]
Subject: Re: filmscanners: Vuescan long pass mode
- Original Message -
From: "Herm" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent
Jerry Oostrom wrote:
Another, complex approach would be to apply scouring algorithm in the long
exposure scan to the sections with pixels exposed to the limit (one/all
channels). That is, if scouring algorithm can be applied that way. The
pixels that were exposed to the limit would still
this is multiscanning, its already available and implemented..leave Ed alone
(g)...We have a problem communicating, we keep saying the same stuff over and
over and over and over..
"bjs" [EMAIL PROTECTED] wrote:
I have a Pascal program that takes N files at arbitrary exposure levels and
- Original Message -
From: "Herm" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Sunday, February 11, 2001 3:27 AM
Subject: Re: filmscanners: Vuescan long pass mode
this is multiscanning...
There is a fundamental difference between combining multiple exposures (ie
longpass)
charge bleeding is a characteristic of CCD sensors, once the electron wells get
filled up you get these vertical smears as the charge "bleeds" into adjacent
pixels..its a hardware problem, can only be solved by limiting the exposure.
I suggest you do multipass with the Canon instead of a "long
The examples I posted earlier provide enough
information for a more sophisticated approach.
No, they don't provide any useful information for a more
sophisticated approach.
b *shrug* Actually they do. That's why I selected them. But I'd rather be
b taking pictures than arguing so
From: "bjs" [EMAIL PROTECTED]
No, they don't provide any useful information for a more
sophisticated approach.
*shrug* Actually they do. That's why I selected them.
Whether Ed Hamrick can come up with a fix for this apparent hardware problem
or not, it should be pointed out that just
- Original Message -
From: "Herm" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, February 10, 2001 2:20 AM
Subject: Re: filmscanners: Vuescan long pass mode
charge bleeding is a characteristic of CCD sensors, once the electron
wells get
filled up you get these verti
Henk, my g was in no way directed to Ed !!
Certainly he is doing a great job and fully get the burden of
the support as well as he moves VueScan forward (rapidly!).
I am probably in the minority of this list because photography is my
hobby: I am a software developer, not a professional
bjs: Is it appropriate directly to give Ed the name and maker of the program
so he can possibly get it on his own see what you are talking about? He seems
quite well aware of ICE and GEM and has been able to adjust his program without
violating any proprietary and copyright requirements in that
In a message dated 2/9/2001 2:05:44 PM EST, [EMAIL PROTECTED] writes:
I agree, although Vuescan long pass currently seems to make some very simple
assumptions about the CCD charge bleeding characteristics. At the very
least it would be nice not to have Vuescan include charge bled pixels
In a message dated 2/9/2001 2:05:44 PM EST, [EMAIL PROTECTED] writes:
I agree, although Vuescan long pass currently seems to make some very simple
assumptions about the CCD charge bleeding characteristics. At the very
least it would be nice not to have Vuescan include charge bled pixels
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 09, 2001 11:08 AM
Subject: Re: filmscanners: Vuescan long pass mode
Can you describe this more sophisticated approach? Give a bit
of pseudocode for this algorithm.
Regards,
Ed Hamrick
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, February 09, 2001 1:51 PM
Subject: Re: filmscanners: Vuescan long pass mode
The problem is that you haven't described an algorithm etc
Agreed, but one has to leave something for Vuescan's developers
Hi Ed,
How does the Minolta Dimage Dual Scan II (USB version) compare with the
Canon FS2710 in terms of using overexposure scanning?
Art
[EMAIL PROTECTED] wrote:
In a message dated 2/8/2001 9:33:58 PM EST, [EMAIL PROTECTED] writes:
Are you sure it works on other CCDs ?
Yes, with
- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, February 05, 2001 1:50 PM
Subject: Re: filmscanners: Re: bit depth and dynamic range
you would want to scan the image twice. Once
to expose for the child and once to expose for the house.
VueScan
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