From: Wolfgang Moser (womo_at_news.trikaliotis.net)
Date: 2008-05-24 21:43:22
Hey Micha,
Michael Huth schrieb:
> I took a look on it on my tft monitor and they also look very good.
> In direct comparison to my lossless compressed version I noticed that
> at the edge between the row pictures ptgui does get the color
> blending very good but you can see some edge in luminance, whereas it
> is the other way around with your picture. Luminance fits, but some
> slight change from green to a more yellow green is visible. On the
> other hand -> You have to know where to look for and it also takes a
> while until you really notice it. I would call it as good as it can
> be.
even, if I try hard, I'm nearly unable to detect
these color differences, maybe because I need
relatively strong glasses.
Nevertheless I found another pair with recognizable
color differences and created just another adjustment
layer, this time for Chrominance correction (at least
called it that way).
Again I created a new action set as well as the
adjustment pictures to preprocess all pieces and save
them as single layer TIFF with alpha channel info:
http://d81.de/shared/vic-ii/ActionSet-VIC-II-Stitching.zip
Then I created another version of my 3x3 puzzle:
http://d81.de/shared/vic-ii/1012-1214-LumaChromaAlpha.jpg
> For a printout the question is if you want 'true' colors or more
> details. Then you might change it to CMYK and Auto Level each color
> independently. My guess for normal dithering is that the printer
> should have at least 4 times the resolution if you use mixed colors.
> As a plain estimation for A0 if you use 70 cm width and have 20000
> pixels in the image is about 715 dpi base times four nearly 3000 dpi.
For a copy chop's printing machine I don't expect a
high quality digital color printing system. If it
produces a pretty picture that I can put onto the
wall behind my working place, it's just fine.
To determine gates and actually work with the images
as intended (by you), the electronic version is much
more better suited for this. Just inserting some new
(vector) layers and put additional information onto
them.
> Tommi Lempinen asked me if I will take a map of the SID when he sends
> me the chip. I'am not sure in what shape it is yet. It should arrive
> here within the next [two?] weeks.
Great news! The filters and some distortion effects
are still some sort of a miracle to many. Maybe even
the designer would not know how to emulate distortion
of the chip precise and correctly.
>> Nevertheless, I'm so grateful that you made these DIE shot, even if
>> it does take years once a addicted microelectronics engineer
>> discovers these for analysis.
>>
> Hehe, a co-worker in research asked me lately how my 'neo-archeology'
> is going on...
;-)
Maybe this really becomes true archeology in some
hundreds of years, because our microchips are the only
artifacts that remained from our existence.
Womo
Message was sent through the cbm-hackers mailing list
Archive generated by hypermail pre-2.1.8.