Actual color and transparency level?

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Actual color and transparency level?

Postby Mike » Sun Jan 13, 2013 9:00 am

Anyone happen to know of an app that can figure out the actual color and transparency level of a selected pixel in a transparent .png file?
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Re: Actual color and transparency level?

Postby gonetriadrr » Wed Jan 23, 2013 3:48 pm

Once upon a time, i posted a project that could do this.
I assume pictdata has not changed so much since then.
I'll look it up, if you like.

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Re: Actual color and transparency level?

Postby Mike » Thu Jan 24, 2013 2:04 pm

Cool. Would be fun to try out... but no rush. I started doing what I needed it for by eye and it doesn't look all that bad... Still might be interesting to see how far off I am.


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Re: Actual color and transparency level?

Postby Dan_Kelleher » Thu Jan 24, 2013 9:24 pm

? project "Levels.sc45" that "gathers rgb luninosity data" ?
by DCS on the Ides of March 2012 ?

DCS rgb luminosity data ides of March 2012.png
DCS rgb luminosity data ides of March 2012.png (47.57 KiB) Viewed 3987 times
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Re: Actual color and transparency level?

Postby gonetriadrr » Fri Jan 25, 2013 2:05 pm

Dan_Kelleher wrote:? project "Levels.sc45" that "gathers rgb luninosity data" ?
by DCS on the Ides of March 2012 ?



No.
This project was quite some time ago.
Was built to demomstrate that colors given by 'pixel color' xternals are post color correction and may not round-trip with absolute fidelity.
In any case, at that time, parsed pictdata exports give 'device color' equivalents (pre-color correction).
Plus, you can parse transparency as well.
I assume this still applies with newer OS's.

Luminosity is a measure of color brightness or lightness IIRC.

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