Inferno #03 22 ноября 2002

Программирование

Opportunities Spectrum - Pseudo-Color: Myth or Reality? Algorithm translation in black and white in color.

              Pseudo-Color:

          Myth or Reality?

  Shaitan


   To start let's parse this topic
First, consider the notion - PseudoColor. As the name implies 
this technology, it is - the output image with imaginary 
flowers, then there is a translation of the black-and-white 
output format to a format with color information. Simply put, 
it is a translation of black and white images in color.


   And now a little history.

   I remember when I was a little
(80 of the last century) and even
knew no such thing as a "computer", once in the "Times" spoke 
of the that most bourgeois bourgeoisie decided all

your old movies converted to color
format. In a trial, they decided to take
film "Sun Valley Serenade" (there still
was such a funny song about locomotive Chatonoga Chuchu). The 
film they worked about two years. All meaning of this 
translation was the storyboard image, after which people hand 
painted frames, and then this thing going in a heap, and 
received a film with a color image. Thereby the global labor 
engaged in such famous firm, as Kodak and Technicolor. Because 
of the terrible complexity had to abandon the project. But

with the introduction of computer technology in
all areas of human inactivity
so no one dared to revive this project (perhaps from 
insolvency, but may just in my head it has not yet occurred, who

them, the bourgeoisie, understand?).

   Strictly speaking, we can now move
to the most important - the translation algorithm.
The essence of this algorithm was realized by me
after watching the next series of "Secret
Materials. "Algorithm translation in color
format is not very complicated and, yes, very much
strong resemblance to translate a color image to black and 
white. 

 1. First we need to determine what percentage of the black 
will match in color pure white (any image on non-digital media, 
ie, photographs, slides, pictures, and then scan - have the 
property eventually turn yellow) and pure black.

 2. With black-and-white spectrum, we figured. Now, in order to 
be able to manage the quality of translation of the image, we 
necessary to divide the color flow on a certain number of 
gradations, ie, give the number of colors used in the

matching using the number of shades of gray, which means 
bringing the Each shade of gray to a specific

colors (shades).
 3. And the last stage just take each point in black and white, 
we can determine the level of its blackness, and in accordance 
with it set already colored dot. 


   I think that you embraced the idea that I want to tell you. 
But to keep transfer of images is necessary to satisfy certain 
conditions: 

 1. To provide a better translation of the image, we need a 
computer with a high specification video capability (ie one 
that is able to give us the full picture of her beauty). For 
example, such as high resolution.  2. Color necessarily have to

ask not for a group of points (as done in Speccy), and for each 
point separately. This is due to the fact that if the color is 
set for a group of points, then neodhodimo will interpolate 
information about the color of all the points and take the same 
color for the whole group, as a result we obtain

full cubism.


   I think you completely understood what I wanted
to say (it is a multi-platform magazine). The Speccy, in my 
opinion, this method generally applicable (sm.p.2), but suddenly

there is such a monster that will be solved
think of some glitch of this kind
and on the Spectrum. Let's hope that this
information will be helpful.


                                 27.09.02

    EAO 679005, Birobidzhan-5 in / h 47062

                          Shashkin Maxim

Ed: That's what happens when the original
picture ...



... Translate the first in black and white, and
then try to restore color:



Similarly, on the other image:
was ...



... Was: