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3D Photo Factory
v1.00
User's Manual
(c) 1994,1995 by SOFTreat
ALL RIGHTS RESERVED WORLD WIDE
3D Photo Factory
Users Manual
*NOTICE*
3D Photo Factory (herein afterwards referred to as 3DF) is owned
by SOFTreat and is copyrighted material, protected by both
United States copyright laws and International Treaty provisions.
SOFTreat grants you, the user, the unrestricted right to operate
this software for the sole purpose of determining it's useful-
ness to you. You may not decompile, disassemble, or alter this
software or any of the accompanying files in any way for any
purpose. You may distribute this software provided that it is
done so in it's entirety and without charge. Written permission
must be obtained from SOFTreat to distribute this software by any
other means.
*WARRANTY*
None! Use of this software is done so AT YOUR OWN RISK!
SOFTreat DISCLAIMS ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OR
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WITH
RESPECT TO DEFECTS IN THE SOFTWARE AND DOCUMENTATION, AND THE
PROGRAM LICENSE GRANTED HEREIN, IN PARTICULAR, AND WITHOUT
LIMITING OPERATION OF THE PROGRAM LICENSE WITH RESPECT TO ANY
PARTICULAR APPLICATION, USE OR PURPOSE. IN NO EVENT SHALL
SOFTreat BE LIABLE FOR ANY LOSS OF PROFIT, BODILY INJURY OR
ANY COMMERCIAL OR PERSONAL DAMAGE, INCLUDING BUT NOT LIMITED
TO SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR OTHER DAMAGES.
OPERATION OF THIS SOFTWARE SIGNIFIES, ON YOUR PART, TOTAL
ACCEPTANCE OF THIS WARRANTY.
*REGISTRATION*
This program is provided as a means to allow the user to test run
the software in his/her own environment for the purpose of
determining if the software will satisfy their needs. 3DF is
fully functional except that no provision is included for saving
any of the creations produced. If this bothers you, then please
go no further and delete this program and all of it's associated
files and make yourself feel better, or pass it on to a friend
who might be interested. We'd love to be able to give this out
without compensation, but money was spent and timed was burned
because we felt a program of this nature was needed and could be
put to a lot of use. For the same reason you wouldn't expect
your local book store to loan you a book for 30 days to see if
you like it, we couldn't give you the software, but we sure can
let you test drive and view the color plates all you want and at
your leisure. We simply ask, that if you like the software, send
in the registration fee and we'll support you for doing so.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
Page 1
3D Photo Factory
Users Manual
*SPECIAL THANKS*
Many thanks goes out to Fred Feucht, author of RDSGEN, for
graciously granting permission to use some of his RDS algorithms
in this software. Without his contributions in this field, 3DF
would not have been possible.
Special thanks to Dan Richardson, author of the superb book
titled 'Create Stereograms on your PC', (c)opyright 1994, for his
unending and relentless 'bug' reporting during beta test. (Hope
it didn't hurt your PC's Dan)
And mucho thanks and love to my understanding wife, Peggy, who
'didn't' <g> have to put up with me during this development.
And, of course, to all of you 3d lovers out there, who wanted it
to happen and let me know it.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
Page 2
3D Photo Factory
Users Manual
*INTRODUCTION*
For a long time, man has been fascinated with developing a way
to depict three dimensions utilizing two dimensional media.
Stereo-pair images were developed in the late 1830s after the
introduction of photography. Later, it was found, that by
combining the stereo pairs into one image through the use of red,
green and blue filters, true 3d could be obtained from the
composite when viewed through special glasses containing red and
blue filters. These images, which became known as anaglyphs,
became a special attraction at the movie theaters, etc. in the
'50's.
In 1959, a researcher at Bell Labs created two-picture random-
dot stereograms and in 1979 the first computerized single-image
random-dot stereogram was created by psycho physicist Christopher
W. Tyler and programmer Maureen Clarke on an Apple computer.
Since 1990, commercial stereograms have appeared with phenomenal
success. Publishers and graphic designers soon realized that 3
dimensional images could be utilized as an attention-grabbing way
to communicate, home hobbyists were simply enthralled! All that
was needed was a PC and the right software capable of producing
the stereo effect. Suddenly, interest soared! Several programs
appeared that would allow anyone with a PC to create stereograms,
and with the more powerful paint programs on the market, suitable
anaglyphs could be created from existing stereo pairs,.. with
some work. Unfortunately, there was no single source solution to
this problem....until now. 3D Photo Factory was developed so
that both anaglyphs AND stereograms could effortlessly be created
from ONE single program.
3DF was designed to make the creation of 3 dimensional images
an easy task and an enjoyable one. With the easy to use
interface, you can easily create anaglyphs, random-dot
stereograms and color field stereograms.
*LEADING FEATURES*
(overall)
1 Read/Writes BMP, GIF, PCX, TGA, TIF & JPEG 24-bit.
2 With enough system memory, 3DF will handle image sizes
up to 4096 x 32768 x 24.
2 Supports Expanded or Extended memory.
3 GUI mouse driven interface.
4 Individual viewports for source and resultant images using
an optimized palette for simultaneous viewing and easy
visual reference.
5 One-click proofing of any viewport to SVGA screen.
6 Change from Anaglyph to Stereogram mode generation at the
click of a button.
7 Print any loaded image to HP Laser jet, HP Desk Jet 500c, or
Epson 24-pin dot matrix printer.
8 Printer resolutions supported ...
HP Laser Jet 75,100,150,200,300,600,1200 dpi
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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3D Photo Factory
Users Manual
HP DeskJet 500c 75,100,150,300 dpi (color or B&W)
Epson 24-pin 180 dpi
9 Print in scatter, halftone or color depending on selected
printer.
10 Use 'try and see' techniques without reloading and starting
over.
11 Supports ATI, Paradise, Trident, Tseng, Video Seven video
graphics adaptors as well as the VESA standard.
12 Capable of producing high quality 24-bit 3 dimensional
images suitable for desktop publishing.
13 Supports 'Quick Previews' for fast prototyping.
(Anaglyph specific)
1 Gate any color control channel ON or OFF at the touch of a
button.
2 Control the percentage of the color per channel (left & right
eye) that is passed to the final composite.
3 Manually set a hard separation value to help increase depth
in those images that need more or less punch.
4 Quickly see results with the preview function.
(Stereogram specific)
1. 4 algorithms to choose from.
2. Control depth of field, strip width, display width, scan
origin, strip position, etc. depending upon algorithm
chosen.
3. Create 'crossed-eye' or 'parallel' viewed stereograms.
4. Use Random dot background in B&W or color w/density & seed
user defined.
5. Vary the color of the random dot background for each color
channel in percentages of 0 - 100%.
6. Set the scan origin in the depth-map by point & drag.
7. Use any readable image as a source for the image strip. Does
not have to match size of the depth-map.
8. Select the image-strip from user defined area within the
image-map by point & drag.
9. Image-map tiling automatically sized to the defined strip-
width while maintaining aspect ratio.
10. Use your own special graphics as viewing indexes.
11. Create special effects before and after depth processing to
include ...
(pre-processing- Before any depth processing)
A. Low emphasis (enhances noise)
B. High emphasis (enhances even more noise)
C. Smoothing (reduces noise)
D. Kodalith with user definable threshold (converts to 2-
color)
E. Blotching (dab it with a sponge effect)
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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F. Randomizing of image-map in user defined cell size up
to 32w x 32h pixels. (creates a mosaic effect)
(post-processing- After all depth processing)
A. Low emphasis
B. High Emphasis
C. Smoothing
D. Blotching
E. Add user defined border for customized effects.
Create a border type in your favorite paint program and
let 3DF add it to your stereogram. Auto resizing if
border is of different size than RDS.
F. Add your own overlays in transparencies from 10-100%.
Great for adding color gradients, company logo's, etc.
12. Punch up the source by brightening mid range values in
source image.
13. User definable seed and density for random number generator.
14. Posterize the depth-map image from 2-256 levels.
15. Quick and easy previews in both anaglyph and rds setup
menus. See what your setup creates quickly.
*HARDWARE REQUIREMENTS*
80386 CPU or greater
4 MB ram, 8mb+ recommended for serious work.
Expanded or Extended memory manager( such as HIMEM.SYS)
Adequate hard disk storage for images.
Microsoft mouse or equivalent.
HP LaserJet printer, HP DeskJet 500c for color or Epson 24-pin
dot matrix.
Compatible VGA card.
Supports VESA video standard.
MS-DOS v5.0 or above
In addition you will need source images for use with 3DF. If you
are creating Anaglyphs, the source images should be 24-bit full
color images, both frames (left & right). 8 bit images may be
used but optimum results are obtained from 24-bit.
For stereogram generation, the depth-map images are typically
black & white 256 shades of gray, however, they may be any format
that is readable by 3DF.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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3D Photo Factory
Users Manual
*INTRODUCING THE WORK CENTER*
The work center is your main work area containing all of the
user controls and viewports for the images you'll be working
with. On the left hand side of the work center is a column of
push button controls for use in operation of 3DF. The following
describes their functionality...
TOOL BAR ICONS and description
[ 1 ] <- Information on the currently selected image.
[ 2 ] <- Save the current image to disk.
[ 3 ] <- Send the current image to printer.
[ 4 ] <- RGB Color channel setup, separation and anaglyph
preview.
[ 5 ] <- Select Anaglyph mode.
[ 6 ] <- Select Stereogram mode.
[ 7 ] <- Enter RDS setup menu.
[ 8 ] <- Turn viewing indexes ON/OFF.
[ 9 ] <- Set parallel viewing ON.
[ 10 ] <- Set crossed-eye viewing ON.
[ 11 ] <- Do a color random-dot stereogram (no image-map
loaded)
[ 12 ] <- Do a B&W random-dot stereogram (no image-map
loaded)
[ 13 ] <- Use/select strip from image-map.
[ 14 ] <- Tile image-map at strip width dimensions.
[ 15 ] <- Setup page layout for printer.
<Detailed reference on TOOL BAR controls>
[1] Image specifics ... Clicking on this button will show
specific information for the selected
image. (To select an image, just point to
the image and click the LEFT mouse button).
[2] Save Image ... Clicking on this button will save the
selected image to a disk file. Choose the
desired file format by selecting one of the
format buttons at the right of the window.
To enter the filename, either point to an
existing filename in the list or enter a
new filename by pointing to the filename
and pressing the left mouse button. To
save the image, click on 'Save' or 'Cancel'
to abort the process.
[3] Print Image ... Clicking on this button, will send the
selected image to the printer. Be sure
your printer is on-line and ready. 3DF
expects that you have previously configured
3DF for your printer. The image will be
sent to the printer at the location and
dimensions as set in the page-layout menu
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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(control 15).
[4] RGB color ... Selecting this control will show the
setup menu used for color channel
selections and separation for the
anaglyphs. The color channels may be gated
ON or OFF by simply selecting the
corresponding color button. Additionally,
you may control the percentage of each
color being sent to the anaglyph from each
source image. In the case of stereograms,
the LEFT color channel percentages govern
the color of the color RDS. The gates are
not effective for stereograms. If you are
working with anaglyphs, the preview
function will allow you to quickly see the
results from the current settings in the
RGB color controls.
[5] Anaglyph Mode ....
Select this button to create Anaglyphs.
[6] Stereogram Mode ...
Select this button to create Stereograms.
[7] Stereogram setup ...
Select this button to make changes to the
stereogram setup. Active only in
Stereogram mode.
[8] Viewing Indexes ...
When selected, 3DF will generate two
viewing indexes positioned at the center-
top of the rds and separated by the current
strip width. If 'Custom viewing indexes'
is selected in the setup menu, then your
own graphic will be substituted.
[9] Cross-eye viewing ...
This button will generate a stereogram
meant for cross-eyed viewing.
[10] Parallel viewing ...
Generates a rds meant for parallel viewing.
[11] Random Color ...
Causes a colored random-dot pattern to be
generated for the stereogram. This is only
effective if the source image-map image is
NOT LOADED. The color generated may be
varied by entering the desired percentage
of color for each color channel from the
RGB color channel setup menu. The random
number generator uses the current seed &
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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3D Photo Factory
Users Manual
density setting from the 'rds setup' menu.
Default is 1 & 45. This control is
available for stereograms only.
[12] Random B&W ...
Selecting this button will generate a black
and white background image for all
stereograms. This is only effective if the
source image-map is NOT LOADED. To remove
the image-map from memory, simply point to
the viewport and click the RIGHT mouse
button. The random number generator uses
the current seed & density setting from the
'rds setup' menu. Default is 1 & 45. This
control is available for stereograms only.
[13] Image-map strip ...
This will take a strip from the current
image-map for use in the rds. A box of
varying size will be displayed over the
image-map in the viewport that indicates
the current location of the strip origin
and it's relative width. The width and
it's origin are governed by the strip width
and strip origin settings in the rds setup
menu. To change the location of the strip
in the image-map, just point to it with the
mouse and drag it to the new location. The
resultant rds will use the image enclosed
within the strip marker box.
[14] Tile Image-map ...
If there is an image-map loaded, the image
will be tiled to the current strip width
shown in the setup menu, if this control is
selected. Aspect ratios are maintained.
[15] Page layout ...
Allows the user access to printer
selections and image dimensioning.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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Users Manual
*THE WORK CENTER*
The main screen for 3DF is composed of a tool bar (described
briefly above) on the left, 3 viewports and a help/status line at
the bottom of the screen. Two modes of operation, ie.
stereograms or anaglyph (default), will generate slightly
different screens and controls, but are very much the same and
serve the same purpose. In anaglyph mode, viewports 1 and 2,
the smaller viewing areas to the left of center, provide a
glimpse for the user of both the left-eye and right-eye frames
from a stereo pair. Each will be titled 'Left-eye' and 'Right-
Eye' respectively. Each of these viewports has a set of buttons,
ie. 'Open' & 'proof'.
*OPENING A FILE*
To open an image from disk, select the 'Open' pushbutton and
a dialog menu will appear. This menu is typical of file open
dialogs and it's purpose is to let you select a file from
anywhere on your system. On the right side of the menu, the user
may select any of the readable file formats, by depressing the
appropriate button. By default all are selected ON, and all of
these types of files will be shown in the file list window on the
left side of the menu, if they are present in the current
location on the disk. To reduce clutter, or to select just a
particular file type, deselect those file formats by turning off
the corresponding format in the buttons. A new file list will be
generated to reflect the changes. In addition, you may preview
any highlighted file in the file list window, by pressing 'Peek'.
A window will open and a small presentation of the image will be
shown. Pressing 'OK' will return you to the menu. You may also
do a little housekeeping with the 'Kill' button. Pressing this
button will DELETE the highlighted file in the file list window.
You will be prompted first, but if you do.....it's GONE! Use
with caution.
*PROOFing*
Anytime you wish to view the image in a viewport, you may
press the proof button and the image will be displayed on the
SVGA screen. If the image is larger than the screen mode
(640x480), you may scroll the image left, right, up or down by
using the arrow keys on the keyboard. To return to the work
center, press the left mouse button or press any key on the
keyboard. Because each screen preview image is held in memory,
screen redraw is quick and clean.
*REMOVING IMAGES*
Clearing all images in all viewports is easily accomplished
by simply pressing the 'Clear All' button, located between
viewport 1 & 2. To clear one particular viewport, point to the
viewport and press THE RIGHT MOUSE BUTTON. All other viewports
remain untouched.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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Users Manual
*SELECTING AN IMAGE*
Selecting an image is done by pointing to the image on the
screen and pressing THE LEFT MOUSE BUTTON. The selected image
will be highlighted with a RED border, indicating it is the
active image. The active image is used for printing, saving to
disk and image statistics.
*OUTPUT IMAGE*
The larger viewport in the center of the screen, titled
'Anaglyph', will hold the resultant anaglyph once it has been
created. This viewport also has a set of associated controls
located at the bottom of the viewport. The first button, 'Create
Anaglyph', does just that. This is the one you select when you
have loaded your left & right eye source images and are ready to
create an anaglyph. Once initiated, the status bar will show you
the progress of the operation until completion where it will be
displayed in the viewport. The 'Proof' button allows you to view
the finished anaglyph on SVGA for inspection. Once the anaglyph
has been completed, this viewport becomes the selected image, at
which time you may save it, print it, or delete it and start
over.
*ANAGLYPH SOURCE IMAGES*
The LEFT-Eye and RIGHT-Eye images for use in an anaglyph can be
produced from a variety of sources, such as CAD systems, 3D
Studio, POV raytracer, or from scanned photographs of specially
photographed scenes. Digital photography is also an excellent
source of data. Regardless of the source, each must have the
capability of producing the image frames in color and from a
different viewpoint. The sample images included with this
package were produced by a 35mm camera and digital photography.
ANA_L1.JPG and ANA_R1.JPG were produced by 35mm photography and
scanned at 96 dpi from the developed prints. ANA_l2.JPG and
ANA_R2.JPG were produced using a Cannon ZAPshot digital camera
and digitized with a color frame grabber board. The latter has
the disadvantage of much lower resolution, however, it is far
more convenient and faster. The method you choose should be
determined by the application your anaglyph is targeted for.
*VIEWPOINTS and SEPARATION*
In order to produce an anaglyph, the source images must have
different viewpoints or separation. If you are using a software
application, review it's documentation on creating stereo frames.
The human eye see's an object from two different angles resulting
in two separate images, one for each eye. The human brain takes
these two images and mixes them into one image, allowing us
to determine depth in a scene. Typically, the distance between
the human eyes is 2.5". To create a 3 dimensional anaglyph, we
must recreate what each eye would see by photographing the same
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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3D Photo Factory
Users Manual
scene twice, but from a different viewpoint. The RIGHT-Eye frame
would be photographed 2.5" to the RIGHT from where the LEFT-Eye
frame was photographed. Use of a stereo camera, such as the
Realist, does the work for you as it shoots both left & right
frames simultaneously. A conventional camera may also be used by
simply shifting your stance slightly to the right after exposing
the left frame, or for more precise alignment, by constructing a
slider that mounts to a tripod allowing the camera to be moved
left or right by a distance of 2.5". In both cases, however, the
subject being photographed, must be stationary or visual depth
distortions will appear.
*STEREOGRAM DEPTHMAPS*
A source image for a stereogram may be any image type that 3DF
is capable of reading. Specially prepared images are generally
used as depth-maps using shades of gray, where black represents a
pixel farthest from the viewer and a white pixel being the
closest. However, 24-bit true color images (photos) will work
also, with mostly unpredictable results. A good source of images
may be generated by programs such as 3D Studio, by Autodesk.
Select a white material such as WHITE plastic and assign this
material to all objects in the scene. Create one camera and a
light source and place them together at the viewpoint, as if the
camera was a spotlight shining the light on your scene. Turn
shadows off! Use a black background or select none. Render the
scene to disk using TGA format.
Paint programs may also be used to create the source images as
well, however, this does require some artistic ability and goes
beyond the scope of this program. 24-bit full color images may
also be used as a source image. Options are available in the
Stereogram setup dialog that may be used to create some very
interesting 3d scenes. Experiment, you can't hurt a thing.
*STRIP and SCAN ORIGIN MARKERS*
When 3DF is in RDS mode, you have the option of selecting the
scan origin in your depth-map. The scan origin is a point that
lies anywhere along the x-axis in the image. 3DF will begin it's
depth processing from this point and scan right in the image until
the rightmost pixel or end of the image has been encountered.
Once this pass has been completed, 3DF returns to the strip origin
and scans the depth-map in the left direction until the 1st pixel
in the depth-map has been reached. This helps to reduce
distortion in the final rds. Setting the scan origin to the
center of the depth-map reduces the distortion by 50% as compared
to starting the scan at the first pixel.
Setting the position is accomplished by pointing to the vertical
line and dragging the line to the diseired position. Notice that
as the line is slowly moved across the image, beeps will be
generated at different points along the way. A beep indicates
that the line is positioned on a strip-width boundary. Ideally,
if you are using an image-map, you will want to position the
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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3D Photo Factory
Users Manual
marker on a strip boundary, otherwise, the image strips will be
out of sync in the final rds.
The strip marker is shown only when an image-map has been
opened. It is postioned over the image in viewport 2 and can be
positioned by point a drag, just like the scan origin marker. The
strip marker represents the 'section' of the image-map that will
be used as the strip in the final rds. The strip marker box will
always be the full height of the image map, independent of the
dimensions of the depth-map and can never exceed the left or right
boundaries of the image. Preferrably, you would want an image-map
to be at least as tall as the depth-map to prevent pixellization
of the strip when the rds is created, however, 3DF will use
whatever happens to be present in the viewport. Remember, the
final rds is ALWAYS the size of the depth-map that has been loaded
and 3DF will resize to the depth-map's dimensions for any other
element that gets added. In addition, the width of the image-map
should be at least as wide as the current strip width for the
current algorithm, however, unusual special effects can be created
by using an image-map with dimensions that ware smaller. Try it..
*QUICK START*
Creating an Anaglyph....
1.... Select Anaglyph mode.
2.... Load ANA_L1.TGA into the Left-eye viewport.
3.... Load ANA_R1.TGA into the Right-eye viewport.
->Select 'RGB color control' from the TOOL BAR
4.... Set the LEFT color gates as follows ...
RED -> ON
GREEN->OFF
BLUE->OFF
5.... Set the RIGHT color gates as follows ...
RED-> OFF
GREEN->ON
BLUE->ON
6.... Adjust the color controls to the following ...
L-RED 100% R-RED 0%
L-GRN 0% R-GRN 100%
L-BLU 0% R-BLU 100%
-> Select 'Preview' for 'quick results' viewing
7.... Close the RGB Color Control menu.
8.... Select 'Create Anaglyph' beneath Viewport 3.
9..... Select'PROOF' button to view resultant anaglyph.
(use RED/Blue glasses - RED over left eye).
10.... Press any key to return to the work center.
Simple... huh!?
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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Creating a stereogram using random-dots
1.... Load RDS_1.tga into depth-map viewport.
2.... Select Stereogram mode.
3.... Select B&W random background.
4.... Select 'Create Stereogram'.
5.... Select 'PROOF' to view results on SVGA.
6.... Press any key or mouse button to return to work center.
Creating a stereogram using an image-map
1.... Load RDS_1.tga into depth-map viewport.
2.... Load IMAP_1.tga into the image-map viewport.
3.... Position the scan origin marker to a midway point on
the depth-map and on a strip boundary. (listen for the
beep)
4.... Position 'strip marker' to desired position on image-
map.
5.... Select 'Create Stereogram'.
6.... Select 'Proof' to view stereogram on SVGA.
7.... Press any key or mouse button to return to work center.
*SETUP CONTROL for STEREOGRAMS*
The stereogram setup menu is activated by pressing the 'RDS setup'
control pushbutton from the tool bar (#7). A menu will appear that
offers many different variations in the way a RDS is generated.
First of all, there are 4 algorithms to choose from. To select any
algorithm, point to the algorithm # and click. The algorithm will
advance to the next higher with the current algorithm chosen shown in
the algorithm field. Each algorithm uses a slightly different
approach to create the stereogram. Algorithms 1-3 use the red &
green channels in the depth-map to generate the depth, whereas,
algorithm 4 first converts the pixel value to a weighted value
between 0-255. It would be impossible to try and explain what
algorithm works best for what because of the variations in depth-
maps. The best thing to do is simply experiment and discover what
works best for your depth-maps. The preview window allows you to
view the resultant stereogram quickly and make a quick analysis.
*ALGORITHM PARAMETERS*
Depth of field
Enter a value from 2 to 16 to change the apparent depth
produced from the depth-map. 2 produces MORE depth and 16
the LEAST amount of depth. Note that more depth causes MORE
distortion in the rds when using an image-map.
Strip Count
This field governs how many strips are included in the rds.
(c) 1995 SOFTreat Rt. 2 Box 67-S Youngsville, NC 27596
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Some of the algorithms do not use this field and will be grayed
out when the algorithm is selected. When using image-maps, this
number will usually be around 4 or so. This produces a strip
width of suitable size allowing more of the image-map to be seen
and recognized in the final rds. Note also, that this field
determines the size of the 'strip marker' box located in the
work center screen. Once the width has been determined, you can
position the marker box to any position within the current
image-map (with tiling off) for precise selection of the image-
map.
Display width
This field tells 3DF the display width to setup for in the depth
generation. Display width is not used by all parameters and
will be grayed out in some algorithms. In algorithms that do
not use the strip count field, this field can be used to select
the strip count. Default is 10" for a typical monitor.
Levels
This field will allow you to select how many levels of color the
depth-map will contribute to the depth of the rds. 3DF defaults
this to 256 levels, meaning that all values in the image will be
processed fully for each color channel. This is most effective
when attempting to create an rds using a true color image as the
depth-map. Reducing the levels to 64, or 16, etc., will reduce
the noise in the depth allowing more of the image's real theme
to be seen, depending upon the depth-map used, without
diminishing the overall depth.
Strip Origin
This field determines the starting position in the image-map
for the strip to be used in the rds. It's position is reflected
in the 'strip marker' box located over the image-map in the work
center screen. Only the area enclosed within the 'strip marker'
box will be used as the strip.
In addition to the selection of different algorithms, 3DF allows
the user to set certain processes on to create different and unusual
effects in the final stereogram. All of these effects will show in
the preview window as well. The processes are divided into 2 groups,
pre-processing and post-processing. Pre-processing defines activity
generated BEFORE any depth processing has been done to the image, and
conversely, post-processing means these activities will occur AFTER
the depth processing has been placed in the image. To select an
activity, point to it with the mouse pointer and click.
The following briefly describes each of the processes. Experiment
here till your heart's desire. Many different effects can be
produced using these simple controls in combination with your current
image-map.
*PRE-PROCESSING*
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1> Pre-Emphasis low on/off
This control will enhance any noise in the image-strip. Being
that stereograms thrive in 'noisy' environments, using this
function with a rather smooth image-map, such as a photo, will
help the effect.
2> Pre-Emphasis High on/off
This controls does the same as the above, but more of it!
3> Smooth on/off
This is the opposite if the above. If an image-map is noisy
this will help to rough out the bumps.
4> Kod<alith> on/off & threshold amount
This function does a thresholding of the image-map. Each
pixel in the map is examined and if found to below the
threshold, the pixel is replaced with a pixel value of '0' or
black. If it is over the threshold, the pixel will be
replaced with 255 or white. This creates a '2-color' black &
white image for the image map, sort of like taking a
photograph and making it clipart. For use when an image-map
is loaded.
5> Blotch on/off
Imagine a wet sponge being blotted over a water color
painting. Works good when the image-map has lots of color in
it. Not recommended for use without an image-map.
6> Mix on/off & cell size
Mix will create a random mosaic of 'cell' size from the
current image map. Maximum cell size is 32x32.
*PRE-PROCESSING*
1> Pre-emphasis low on/off
Does the same as 1 above, except that the operation is
performed after the depth processing has been generated in the
rds.
2> Pre-Emphasis high on/off
Same as 2 above, but again, is done only after the depth
processing has been applied to the rds.
3> Smooth on/off
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Same again as 3 above, performed also after the depth
processing.
4> Blotch
Same again as 4 above.
5> Border on/off
This function enables you to overlay another image on top of
the rds. When 3DF is about to place the border on the rds,
the file/open menu will appear with the caption 'Open border'.
Select the preferred border from the file list and 3DF will
place it over the rds. The border image DOES NOT have to be
the same size as the rds, if it is a different size, 3DF will
automatically resize it to fit.
* special notes on borders *
Your borders may be any file readable by 3DF and should be
created with the following in mind.
A> To allow your rds to SHOW THRU the center of the
border image, the pixels of the border image that
would normally cover the area in the rds you want
to be seen should be a value of 5 or less.
B> To keep distortion to a minimum, size the border
image as close as possible to the size of the rds.
The rds will always be the same size as the depth-
map.
6> Xpar (transparancies) on/off 1-100%
This function will let you select another image to overlay the
current rds. Transparency values of 1 - 100% may be used.
This is a good technique for overlay custom color gradients,
source depth-maps etc. onto the rds without completely
covering the detail in the rds.
*CUSTOM INDEXES*
To give your stereogram a custom look, select CUSTOM INDEXES from
the rds setup menu to use a graphic of your own for the viewing
indexes. Considerations here are as follows..
1> Pre-size your graphic before hand. 3DF does not resize the
graphic.
2> In areas of your graphic that you do not want to be seen in
the rds, use a pixel value of 5 or below.
3> Your graphic may be any readable file type by 3DF, 8 or 24-
bit.
4> Viewing Indexes from the TOOL BAR must be turned ON to
enable this function.
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*BRIGHTEN DEPTH-MAP*
To give your depth-map some extra 'punch' in the midrange values,
select this function. Midrange areas will appear to pop-out more.
*RANDOM NUMBER GENERATOR*
To provide a varying degree of randomness in your stereogram, enter
any value from 1 - 32768 in the 'Seed' field. To control the amount
of BLACK density in the random field, enter a value from 1-99 in the
density field. The higher the number, the more black will be present
in the random field.
*PRINTING*
Any selected image in the work center may be sent to the printer.
First, select the page layout control at the bottom of the tool bar.
The layout menu will scroll out from the right of your screen.
Select the appropriate printer type by selecting one of the three
printer types shown. Additionally, select the DPI you wish to use
and the print method, either halftone, scatter, or color. 3DF allows
you to position the image anywhere on the page you would like at any
size up to the page limits. Three fields are provided that govern
the 'top' and 'left' margins and the width of the printed image. 3DF
automatically maintains the image's aspect ratio to the current
width. Dimensions are calculated at 1000 dots per inch. For
instance, if you wish to print the image starting at 1" down from the
top of the page, you would enter 1000 in the first data field.
Likewise, to print the image 2" from the left margin, a value of 2000
would be required in the 2nd data field. To print the image at 6.5"
wide, a value of 6500 would be needed in the 3rd data field.
Once the correct setup has been made, close the layout menu, and
select the 'Print image' control from the tool bar to print the
image.
******* END ***********
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