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File: gds31d.zip
URL: ftp://ftp.netcom.com/pub/ph/photodex/gds31d.zip
-> Host: oak.oakland.edu
Path: SimTel/msdos/graphics
File: gds31d.zip
URL: ftp://oak.oakland.edu/SimTel/msdos/graphics/gds31d.zip
17 How can I make better Gray Scale conversions?
Most of us start out thinking that you just put a GIF into a
converter program and out comes a perfect ASCII pic. Would you
believe ... there are some things you can do to improve the chances
of getting a good conversion.
The following is not a complete list, but it is what I have
learned in making many conversions:
o Use an 8 bit gray scale or color image instead of a 2 bit B&W image.
o Use an image with a wide, even distribution of tones.
o Keep it simple, like a face or close-up of an object.
o Avoid busy backgrounds. With exceptions, avoid bright backgrounds.
o Use an image that is tightly cropped, without a lot of waste.
o Be prepared to quickly run through a series of conversions. You
will probably not like 9 to 11 out of 12.
o It helps to do touch-up work on the converted picture.
Concentrate on the focal points and important areas of the
picture.
18 What do those filename extensions mean?
A file may have some of the following elements in its name:
File name (a file may Usually implies "uu" or "uue" for uuencode,
have a different name ____ a color pic. __ "xx" or "xxe" for xxencode.
after uudecoding). | | |
| | |
filename.vt.ansi.tar.Z.uu
| | |
Usally implies animation. ___| | |__ For Unix Compress, may also
| be .gz, .zip, etc. A .zip
Tape ARchive format may contain ______| file may contain more than
more than one file. Must be 'untarred'. one file, must be 'unzipped'.
For further information, on how to save, uncompress, untar, unzip,
and view files, see Questions 20 and 21.
19 What is 'uuencoding'?
Color graphics and animations must be processed to change the
control codes to regular printable ASCII characters before they can
be sent as text (which any information service can handle). This
processing is called 'uuencoding'.
The file is processed back again after it is received. This is
called 'uudecoding'. See Question 20 on how to save and 'uudecode'
a file, and Question 21 on how to view animations and color images.
A uuencoded file may look like:
permission mode _______ ______ file name to be given to decoded file
| |
begin line ____ begin 644 filename
M;2XN+BXN+R\N+B\O+BXN+BXN+R\N+B\O+BXO+RXO+RXN+B\ON+B\O+BXN
encoded data __ M"AM;-#LV2"`@("`@+R`@7`H;6S$[,3%("AM;,CLQ,4@@("`@<("\*&ULS
`
end line ______ end
20 How do I save, 'uudecode' and uncompress a file?
Type the name of the file where I have "filename". On a Unix
system, the process is usually as easy as:
To save a file:
In most newsreaders, you:
o Type: s filename (or a full pathname)
In Elm:
o Type: s