Re: How to have monocrome "Dark Blue" rather than "Black" for the following operation?

Dear Mr. Friesenhahn,

Thank you very much indeed.

I am sorry. Perhaps knoppix only has imagemagick installed, not
graphicsmagick. So I had to remove the string "gm" from your given
command line.

Either of your suggested code-line:
convert -density 100 LoopEternal.pdf -colorspace Gray -colorspace rgb
-fill blue -colorize 0/0/100 -transparent white +adjoin
imagecon/image-%03d.png

and

convert -density 100 LoopEternal.pdf -colorspace Gray -colorspace rgb
-fill blue -colorize 0/0/100 -fuzz 1% -transparent white +adjoin
imagecon/name-%03d.png

work as you intended.

You have written the following lines:
[quote]
If you are looking for arithmetic perfection, then it could be useful
to know that relative intensities of the red, green, and blue, which
make up grey (luma) are not uniformly proportional at all.  This is
the equation for Rec.709 RGB

   Luma = 0.2126*red + 0.7152*green + 0.0722*blue

This suggests that perhaps the optimum colorize proportion for blue is
something other than 100% if you are intending that the relative
intensity of the result in blue is the same as the original gray
image.
[/quote]

Perhaps you overlooked my post for the value of colour Dark Blue.

Like you used the keyword blue, how could the colour, Dark Blue,
identified by the following value, as mentioned earlier too:
The identifier for Dark Blue:
PMS: 3591 C
Hex Color: #06038D;
RGB: (3,37,126)
CMYK: (100,87,0,25)
be used instead?

In the coming days, I would be able to learn about the options. What I
wouldn't learn is why you used the code-line the way you did.

Did you acquire this specialised knowhow learnt by experience? Or was
it because of your position of privilege as a specialised programmer?

So could you please share the insights and the reasons for your
writing the code-line the way you did please? Did you write this code
consciously, or did the code just came to you?

Particularly, you have used two -colorspace options. then colorize and
adjoin. Why? The reason behind your using such options?

Best wishes,
Rajib