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was located within the grid. |
There was many ways of doing this, but I opted for the following |
rectangle (10 x 5 characters): |
1.2.3.4.5. |
2.A.B.C.D. |
3.E.F.G.H. |
4.I.J.K.L. |
5.M.N.O.P. |
This rectangle was then replicated horizontally and vertically |
until an area the size of an 8.5" x 11" page was filled up. I |
later decided to replace the periods by spaces to "lighten" the |
grid. This created an electronic grid which looked like this: |
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 |
2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C |
3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G |
4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K |
5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O |
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 |
2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C D 2 A B C |
3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G H 3 E F G |
4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K L 4 I J K |
5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O P 5 M N O |
The characters 1 to 5 produced horizontal and vertical guidelines. |
With these guidelines, I could quickly locate the approximate area |
of the grid that I wanted to work on. To pinpoint the exact |
location, I relied on the letters A to P which appeared only once |
inside each rectangle. |
Of course, the electronic grid alone was not very useful until I |
could somehow relate it to the drawing. To do so, I printed out |
the grid and then photocopied it on an acetate for reusability. |
Then, whenever I wanted to work on a picture, I taped a photocopy |
of it to the back of the acetate and brought up the electronic grid |
on the screen. By the intermediary of the grid, I automatically |
had a relationship between the picture on paper and the screen. |
TIP: If you ever print a grid on an acetate, make sure to cover the |
acetate with clear tape afterwards to prevent your fingers |
from eroding the toner. I learned the hard way. |
Now, back to Mona. You may find the discussion a little difficult |
to follow at times without a picture, so either find a copy of the |
Mona Lisa or print out this file. |
In search of a decent reproduction of the Mona Lisa I went to the |
closest library and found an excellent example on page 25 of the |
book "Leonard de Vinci" published by McGraw-Hill in 1974. The |
picture measured about 9.5" x 12" and was in full colour. |
Next, I photocopied the picture. The lowest darkness setting gave |
the best result, but was still a little bit too dark in certain |
areas to distinguish some of the lines. Before addressing that |
problem, I decided to cut the photocopy so that the resulting |
picture could fit in 55 lines by 78 columns. This was |
approximately double the height of the head and was wide enough to |
show a large portion of both shoulders. |
To make the barely discernable lines more visible, I highlighted |
them with a blue pen. I made sure to draw those lines about one |
sixteenth of an inch thick so they would be clearly visible. |
Experience had taught me that very fine lines were often too |
difficult to distinguish from a dark background once the grid was |
superimposed on the picture. The affected lines were: the lines |
between veil and hair, hair and background, chin and throat, and |
the lines on each side of the face and on each side of the arched |
garment extending to her left shoulder (referred to as the shawl in |
the rest of this document). While I was at it, I also highlighted |
the contours of the lips, nose and eyes in the same manner. I then |
taped the touched up photocopy behind the acetate which had the |
grid. |
The next step was to load the electronic version of the grid in my |
favourite word processor (WordPerfect). Before starting work, I |
decided to represent the dark areas of the picture with an "8" (I'm |
sure you guessed that), the shawl with an "I" and the veil with an |
"8" if it was covering any hair and with an "I" if it was not (or |
to show its border in the hair). I chose those characters since |
they contrasted very well: it was easy to distinguish a line of |
I's in an area filled with 8's. |
Then, I determined which character of the acetate corresponded to |
the top of her left shoulder and located that character on the |
electronic grid. While holding the acetate in my left hand and |
marking my position on it with my thumb, I delimited the contour |
(only one character wide) around the bottom of the picture (counter |
clockwise) up to her right shoulder by replacing the characters of |
the grid with 8's except for the ends of the shawl which needed |
I's. |
I then continued up the picture, line by line, while overwriting |
the grid's characters with spaces until I got to the first |
character delimiting the border of Mona's hair or veil, as |
determined from the acetate. At that point, I typed one of four |
characters: "8", "d", "`" or "," depending on which one |
corresponded best to the dark portion of the picture at that |