Larry wrote:
> I don't think it is necessary to adjust the white/black pts. by moving
> arrows on the histogram. It would be nice to see the output of the
> preview as a histogram plot and then continue adjusting using the
> standard color tab items.
Yes, I agree.
Bob
I don't feel the need for a histogram in VueScan either. Setting the black and white
clipping levels does all that is needed at the scanning stage, along with control of
gamma.
A separate point. I liked having the picture, preview or scan, occupy the whole
screen. It gave a more satisfying "fi
Poor Ed. He can't win. Anything he does, no matter how many wanted it, some
others will express disappointment. Personally, I like a histogram, and
feel it helps me understand an image, and helps me improve it. And, on the
current 7.3 versions, if I let VS have the whole screen, I get a very ni
etting off easy!! :)
David
-Original Message-
From: Hersch Nitikman [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 14, 2001 10:12 PM
To: [EMAIL PROTECTED]
Subject:Re: filmscanners: VueScan Histogram
Poor Ed. He can't win. Anything he does, no matter how many wan
I will add my vote to those VueScan users who do *not* want it to become
an image editing application. I would rather do my tweaks in Photoshop.
But I do encourage Ed to continue development of features which enable
VueScan to save files with the best possible bits. I think a histogram
displ
Michael wrote:
> Up until the latest versions I always put a hard number (%) in the Wp & Bp
> ... e.g., '0.1' or 0.01%... and because changing this number by minute
> amount changed the image more than you'd think, I had Vs write a small JPG
> direct to Photoshop (note ... such a small change i
>> I don't think it is necessary to adjust the white/black pts. by moving
>> arrows on the histogram. It would be nice to see the output of the
>> preview as a histogram plot and then continue adjusting using the
>> standard color tab items.
I agree, moving arrows are not necessary, but a Vs hi
Looks good so far, Ed. I like the layout, with the combined histo on
top, and the RGB histos superimposed.
I'm sure there will be a raging torrent of suggestions on more gongs and
whistles to add. I would like to see some way of connecting the
histograms to the numbers entered in the WP, BP,
I would second Julian's comments - expecially the part about leaving the
histograms in view for the Preview Memory function - that's the first thing
I tried to do and was a little frustrated by not being able to see what
happened until I had hit the tab again. Ideally leave the old histo there
In a message dated 12/16/2001 3:34:28 AM EST, [EMAIL PROTECTED]
writes:
> I would second Julian's comments - expecially the part about leaving the
> histograms in view for the Preview Memory function
It's fixed in 7.3.5, which I'll release in the next day or so.
Regards,
Ed Hamrick
In a message dated 12/16/2001 4:15:12 AM EST, [EMAIL PROTECTED] writes:
> Just a question, is the y-axis in the histograms linear or log?
It's linear. Would people prefer it as a log scale?
What scale do other programs use?
Regards,
Ed Hamrick
On 12/16/01 4:33 AM, Mark T. <[EMAIL PROTECTED]>, wrote:
>PS - I find it hard to believe we are all sitting here having our
>needs/wants met by a software developer, often in hours, let alone months
>or years.. Ed, I hope you never learn the 'normal' way to develop
>software... :-)
Yeah, I
i like it linear, it shows differences in comprehensible proportions.
i suppose the histo in pshop is also linear.
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 16, 2001 10:36 AM
Subject: Re: filmscanners: VueScan Histogram
&g
Ed wrote:
> I think the best way to do this is for me to just add a histogram and
> then evolve it using people's suggestions.
>
> It's quite possible that a simple histogram of the preview (within
> the crop window) and the scan will be good enough. I can worry
> about fancy stuff like movable
Colin Maddock [[EMAIL PROTECTED]] wrote on Sat, 15 Dec 2001 10:07:11 +1300
>I don't feel the need for a histogram in VueScan either. Setting the
>black and white clipping levels does all that is needed at the scanning
>stage, along with control of gamma.
How do you know where to clip the black a
Julian Vrieslander [[EMAIL PROTECTED]] wrote on Sat, 15 Dec
2001 00:33:41 -0500
>Maybe with more experience I will get better at inspecting VueScan's
>displays and choosing the right values for WP, BP, and gamma. But since
>these displays are not color managed, I also have to mentally compensa
Ed writes ...
> [EMAIL PROTECTED] writes:
>
> > Just a question, is the y-axis in the histograms linear or log?
>
> It's linear. Would people prefer it as a log scale?
>
> What scale do other programs use?
Others are linear ... but I have to admit, a log scale would be more
accurate as the da
In a message dated 12/16/2001 9:46:17 AM EST, [EMAIL PROTECTED]
writes:
> > What scale do other programs use?
>
>Others are linear ... but I have to admit, a log scale would be more
> accurate as the data approached the Wp and Bp. (... Hmmm, maybe not
> accurate, but at least visible ..
Ed writes ...
> I've made the histogram type an option in the Prefs tab.
> The options are Linear, Square root and Logarithmic. I'll
> release this in VueScan 7.3.5.
What exactly are you plotting on the y-axis? ... e.g., any RGB value >0 &
<255, or some calculated luminosity value? Raw RGB,
You cover it all!
Maris
- Original Message -
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 16, 2001 8:47 AM
Subject: Re: filmscanners: VueScan Histogram
| In a message dated 12/16/2001 9:46:17 AM EST, [EMAIL PROTECTED]
| writes:
|
| >
> I've made the histogram type an option in the Prefs tab. The options
> are Linear, Square root and Logarithmic. I'll release this in VueScan
> 7.3.5.
>
Hi Ed,
Why not make it selectable in the histogram window?
Regards,
Austin
On 12/16/01 8:03 AM, David Gordon <[EMAIL PROTECTED]>, wrote:
>Julian Vrieslander [[EMAIL PROTECTED]] wrote on Sat, 15 Dec
>2001 00:33:41 -0500
>
>>Maybe with more experience I will get better at inspecting VueScan's
>>displays and choosing the right values for WP, BP, and gamma. But since
>>t
Could someone explain to me in a few words how to work with a histogram when
scanning? I can see it in VueScan but I don´t know what to do with it,
because there are no sliders anyway...
Thanks in advance,
Bernhard
David Gordon asked: How do you know where to clip the black and white points?
I always leave black clipping at 0, and white clipping at a minimal amount, perhaps
0.1, so that the VueScan scan contains all the tonal range that was on the neg/slide.
Any further clipping of the end points for cos
Julian Vrieslander [[EMAIL PROTECTED]] wrote on Sun, 16 Dec
2001 12:31:34 -0500
>Maybe you are running on a PC and using sRGB as your color space. If so,
>a color managed display is less important.
An outrageous suggestion, you shall be hearing from my lawyers in the
morning... ;)
>I run on a
On 12/16/01 4:19 PM, David Gordon <[EMAIL PROTECTED]>, wrote:
>Julian Vrieslander [[EMAIL PROTECTED]] wrote on Sun, 16 Dec
>2001 12:31:34 -0500
>
>>Maybe you are running on a PC and using sRGB as your color space. If so,
>>a color managed display is less important.
>
>An outrageous suggestion,
onitor can't cope.
Jawed
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Julian
> Vrieslander
> Sent: 16 December 2001 17:32
> To: [EMAIL PROTECTED]
> Subject: Re: filmscanners: VueScan Histogram
>
>
> On 12/16
- Original Message -
From: "Colin Maddock" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, December 16, 2001 7:32 PM
Subject: Re: filmscanners: VueScan Histogram
> David Gordon asked: How do you know where to clip the black and white
points?
>
>
Philip writes ...
> *From my observations if you just scan with the WP at 0.1
> as default, you can compress the tonal values rather than
> making sure the image ocupies the full range available.
> If your image allows a WP of say 0.4 just before clipping
> then the available range isn't wasted i
Ed writes ...
> ...
> I've made the histogram type an option in the Prefs tab. The options
> are Linear, Square root and Logarithmic. ...
The upper "luminosity(?)" histogram shows an uncomfortable likeness to the
"green" histogram(?) How is the upper histogram calculated? (... surely not
th
In a message dated 12/17/2001 10:46:16 AM EST, [EMAIL PROTECTED]
writes:
> How is the upper histogram calculated?
m_hst[3][(306L*pix[0]+601L*pix[1]+117L*pix[2])>>18]++;
Regards,
Ed Hamrick
Now, even I can understand that!!
John.
[EMAIL PROTECTED] wrote:
>
> In a message dated 12/17/2001 10:46:16 AM EST, [EMAIL PROTECTED]
> writes:
>
> > How is the upper histogram calculated?
>
> m_hst[3][(306L*pix[0]+601L*pix[1]+117L*pix[2])>>18]++;
>
> Regards,
> Ed Hamrick
Ed writes ...
> In a message dated 12/17/2001 10:46:16 AM EST, [EMAIL PROTECTED]
> writes:
>
> > How is the upper histogram calculated?
>
> m_hst[3][(306L*pix[0]+601L*pix[1]+117L*pix[2])>>18]++;
at 1st guess ... it is "weighted green" ... a normalized
(30.6%RED + 60.1%GREEN + 11.7%BLUE) ..
Some lists generate a lot of sudden, surpise laughs. This list
doesn't...till I saw this response to the
"How is it calculated?" question.
Ed..great response!!!
Brad
[EMAIL PROTECTED] wrote:
>
> In a message dated 12/17/2001 10:46:16 AM EST, [EMAIL PROTECTED]
> writes:
>
> > How is t
Hi!
You probably want to choose White point in such a way that the only a small
percentage falls outside the histogram. Setting WP to 0.0 mean that you get
everything, but that's probably not what you. Specular highlights should
probably not be included in the density range. So you would use
michael shafferwrote:
> I wonder if a problem might be, that such a histogram ... to be more
> accurate than setting the endpoints at exactly (e.g.,) 0.03% ... would first
> necessitate an actual scan. That is, a histogram based on a preview will
> not be as accurate as placing a decimal, as in
Bob writes ...
> ...
> And, how can you know where to set the B/W points if
> you don't use a histogram ;)
I have 2 problems with that question: (1) I suppose I don't know exactly
what you are trying to do(?) ... (2) a histogram is a visual tool, but it
would be extremely difficult to present
michael wrote:
> Bob writes ...
> > And, how can you know where to set the B/W points if
> > you don't use a histogram ;)
>
>I have 2 problems with that question:
>(1) I suppose I don't know exactly what you are trying to do?
Trying to find out how VS users get the most out of a scan when us
Bob writes ...
> ...
> Hope this helps you understand what I am trying to do. Do you
> change B/W points in VS? If so why and how do you decide what
> they should be?
Up until the latest versions I always put a hard number (%) in the Wp & Bp
... e.g., '0.1' or 0.01%... and because changing t
, 2001 7:54 AM
Subject: Re: filmscanners: VueScan Histogram was VueScan 7.3.2
> In a message dated 12/14/2001 12:46:00 PM EST, [EMAIL PROTECTED]
writes:
>
> > Last I heard indicated Ed didn't wants to add a histogram to VS so we
may
> not
> > get a chance to ask him to chan
-
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, December 15, 2001 1:54 PM
Subject: Re: filmscanners: VueScan Histogram was VueScan 7.3.2
> In a message dated 12/14/2001 12:46:00 PM EST, [EMAIL PROTECTED]
writes:
>
> > Last I heard indicated Ed didn&#x
Hi!
I don't know. My reasoning is that it would be useful to have a log scale, in
case where there is only a small fraction of very bright pixels. I think
Photoshop uses linear scale and GIMP log scale, but I don't know. I of course
have the source code for GIMP and could look if I really wante
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