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Visual Stitcher Documentation
Table of Contents
Chapter 1 - General Instructions
Chapter 2 - Tips for Users
Chapter 3 - Tutorials
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Notice
Panavue makes no warranty of any kind with regard to this material, including, but not limited to, the
implied warranties of merchantability and fitness for a particular purpose. PanaVue shall not be liable for
errors contained herein or for incidental or consequential damages in connection with the furnishing, or
use of this material.
This document contains proprietary information that is protected by copyright laws. All rights are reserved.
No part of this document may be photocopied, reproduced, or translated to any other language without the
written consent of the PanaVue Company. Owners of PanaVue Visual Stitcher licenses are however
entitled to print one copy of this document for their personal use. Owners of multiple-user licenses may
reproduce this documentation up to the same quantity as the number of users their license permits. The
information contained in this document is subject to change without notice.
PanaVue Visual Stitcher is a trademark of PanaVue, Inc.
PanaVue Company, June 2000
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Chapter 1 - General Instructions
Welcome
Thank you for using
Visual Stitcher
from PanaVue!
Visual Stitcher is the professional, high precision, and easy to use software for stitching all types
of images.
The Visual Stitcher interface relies on what users would intuitively do when assembling images
together: simply click and drag markers to pinpoint how images should be attached. This way,
throughout all of the stitching process, you keep complete control on how images are
assembled. At any step, you can bring a manual correction at the "pixel level" since you work on
the full images with full zooming capacities. All this in the familiar windows-style environment.
But Visual Stitcher is much more. It is packed with powerful features you can selectively activate
to automate parts of the work. If you want, Visual Stitcher can interactively assist you in placing
the markers, it can use an advanced algorithm to remove color discrepancies between images,
warp photos, blend them together, wrap a 360 degrees panorama, etc.
Most of all, Visual Stitcher has been designed for a wide range of applications. Use it to stitch
parts of a newspaper page too large to be scanned in a single shot, low resolution photos for
web publishing or for a Virtual Reality viewer, and even very high resolution images and photos,
all with accuracy and speed !
Visual Stitcher is the perfect companion to scanners and conventional or digital cameras.
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What is Visual Stitcher
Visual Stitcher
from PanaVue is a powerful stitching tool. Use it to stitch:
photos
You take a panorama or a mosaic of photos and Visual Stitcher lets you rebuild the entire
scene. Visual Stitcher automatically adapts to any kind of lens, so you do not need to
know which type you used.
scanned or photographed parts of a larger image
In this case, the image you want to scan or shoot is too large to fit on your scanner or in
a single frame. You scan or shoot it in smaller parts and Visual Stitcher lets you stitch
them together to seamlessly rebuild the original large image.
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How to use Visual Stitcher
In order to give you more control on every step of the stitching process, and obtain better and
more consistent results, we have divided the whole process in elementary steps or
projects.
To stitch a row or column of photos, follow these steps:
(for photos shot with the camera rotated over a fixed swivel point)
1-
2-
3-
Crop any excess scan around photos with a Cropping Project (facultative)
Stitch and warp the photos with a Photo Stitching Project
Crop the stitched image with a Cropping Project (facultative). If the image is a 360 degree
panorama, use a 360° Wrapping Project instead. In this case, you can save the resulting
image as a QuickTime VR Panorama.
To stitch a mosaic of photos, you need to warp and stitch them in rows (or columns) using a
Photo Stitching Project. Finally, you stitch the rows (or columns) together in an Image Stitching
Project, since no warping has to be done this time.
To stitch a large image that has been scanned or shot in smaller parts follow these steps:
(for images taken with a scanner or a camera moved over a flat subject)
1-
2-
Stitch the parts with an Image Stitching Project
Crop the stitched image with a Cropping Project (facultative)
tip:
When scanning a very large image, it is often easier to stitch it in rows (or columns) after
which the rows (or columns) are stitched together in another project. But when scanning an
image of reasonable size, it is faster to stitch the mosaic in a single Image Stitching Project.
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Photo Shooting Techniques
You can take pictures with a digital or conventional camera, but in the latter case, you have to
digitize your photos. There are some simple techniques however you should follow to obtain the
best photos for building a panorama or a mosaic.
For shooting a panorama, follow these recommendations:
Ideally, there should be a 20 to 50% overlap between adjacent photos.
Contrary to most other stitching software, Visual Stitcher lets you stitch photos even if the
camera used was tilted (not held parallel to the ground). Also, you do not need to know which
type of lens you used since Visual Stitcher automatically adapts to it.
Beware of moving objects, especially moving clouds. Try not to take too much time between
shootings and do not rely on them for placing markers.
While it is perfectly possible to hand-hold the camera and shoot a panorama, using a tripod and
ideally a special panhead (a panoramic bracket) to accurately position each exposure will give
you the best results. A sturdy tripod is recommended. The panhead is most useful for indoor
shootings where objects are close by and more precision is therefore needed. While you can
make your own simple bracket to position the optical center of the lenses precisely over the
rotation axis of the tripod, companies like Kaidan, Peace Rivers, and Bogen offer a wide
selection to choose from.
Stitch the photos in a Photo Stitching Project optionally followed by a 360° Wrapping Project
.
For shooting a flat subject*, follow these recommendations:
Ideally, there should be a 10 to 50% overlap between adjacent photos.
Move the camera along the subject, always keeping the camera perpendicular to the surface of
your subject (e.g. facing it).
Do not use deforming lenses like fisheyes.
Stitch the photos in an Image Stitching Project.
*
: like aerial photos, multiple photos of a painting, a map, a plan or a blue print.

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