
IMPRINT 0.0.9 November 6-11th 1998
http://www.intrafoundation.com

Written by Lewis A. Sellers, aka Min


WARNING: PLEASE READ ALL DOCS AND BACKUP YOUR IMAGES BEFORE USING THIS APP!


This DOS DPMI program is a utility for frame rendering software (such as POV-ray or Lightwave) that output type 2 uncompressed Targa files (TGA). It takes all the frame images in your current folder and imprints the image from IMPRINT.TGA on them. Post filtering options are avilable as well.
The primary use of the app is placing copyright notices and logos on your animation frames before conversion to MPEG, MOV, AVI, etc.

The files IMPRINT.TGA and ALPHA.TGA are used by this program. You should customize themm with your own logos, copyrights, etc. The width/height of both must be the same. Only TGA files in the current folder of the same width/height are affected.


Syntax is:
imprint [-?] [-m] [-a] [-aa] [-bf] [-tf] [-gray] [-texel]

An example of use would be:
c:\images\mpeg> imprint -a -tf

This performs and alpha blending of the imprint, then a post trilinear filter (smoothing).



-?
Help


-m
MASK mode IMPRINT

The normal imprint mode is MASKED. Upon invoking imprint all appropriate TGA files 	in the current directory have the imprint.tga image masked onto them -- that is, all non black (RGB 0,0,0) pixels overwrite your image.


-a
ALPHA BLENDING mode IMPRINT

For a more advanced and useful technique you can use ALPHA BLENDING mode, invoked by the -a parameter. This makes use of the ALPHA.TGA to determine how the IMPRINT.TGA is alpa-blending onto your frame images. ALPHA.TGA has three channels (RGB). A colour of 0 (in any channel) means no blending -- fully transparent. A 255 means 100% complete overwrite.


-aa 
EDGE ANTI-ALIASING ALPHA BLENDING mode IMPRINT (BUGGY - IN ALPHA)

The most involved of the imprint modes, it is the same as normal ALPHA BLENDING mode (-a) but with edge antialiasing. 


-bf
POST BILINEAR FILTER

A bilinear filter performs a 5 point weighted smoothing operation on the image after imprints, if any.


-tf
POST TRILINEAR FILTER

A trilinear filter performs a 9 point weighted smoothing operation on the image after imprints, if any. Trilinear provides a slightly better smoothing of jaggies than bilinear. It is also slightly slower.


-gray
POST GRAY FILTER

Converts the image to grayscale, ie ((r+g+b)/3).


-texel
TEXEL MAPPING

By default, only frame images that are the same width and height as the imprint.tga are processed. This option uses texture mapping to stretch your imprint to fit any size frame image. THIS FUNCTION IS STILL EXPERIMENTAL -- it is unoptimized and rather slow. Use it only if you have a lot of time.



				fini



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Lewis A. Sellers: writer and contract Multimedia Website Developer
mailto:lsellers@usit.net (The Fourth Millennium Foundation)
http://www.public.usit.net/lsellers/ & http://www.intrafoundation.com
http://brain-of-pooh.tech-soft.com/users/critters/bios/sellers_lewis.html

You can bug the living bejesus out of me live on ICQ @ 491461
(If I don't get back to you within a month, I'm out of prozac in some
dark corner somewhere screaming things quite unintelligable but -- most
curiously -- thick with a sumerian accent.)

"The comedy is over" -i pagliacci
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