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A. |
Using IVEO Converter to Create an IVEO SVG document |
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Creator
Pro users can print to IVEO Converter to create an SVG file from any Windows
application. This is the recommended
procedure even for applications such as Visio, Adobe Illustrator, CorelDraw,
etc. that can export as SVG. SVG files
in general can have problems with sizing, text and element structure that are
minimized by IVEO Converter. One simply
clicks on print, selects the IVEO Converter (which is installed during Creator
Pro installation) and prints. A dialog box permits users to select the name and location of the output.
The
output will be a file _index.html and a file folder called
_index_files. Here
is the name given to the output when printing to IVEO
Converter. An SVG file for each page
printed is contained in the file folder and is called xxx.svg where
xxx is the page number. A single page
document will be 001.svg. This structure is convenient for creating web documents with multiple
page SVG documents. Users who don't need
to use this capability may delete the html file, move the SVG files out of that
folder and delete the folder if desired. Files may be renamed of course, e.g. by deleting the 001 from
single-page SVG files.
The SVG
file will be exactly what would be printed on a standard printer, including
margins. Consequently it will sometimes
be desirable to change the page layout so images fill the entire page. Extra white space
is normally undesirable. However one can
select the part of the image that is desired and click on "Fit Selection
to Window" in the View menu. Blind
users can do this by making a copy of the original and then selecting
"Zoom rectangle" in the View menu, and then selecting opposite
corners of the image. Once this
maximized image has been defined, use the Save As command to save it, or print it and recall it
later by its tactile bar code or index.
Text is
generally reproduced very well if created in most Windows applications. However if text is present as bit-map images,
the text will be images in the SVG document and will not be read as text. Images containing bit-mapped text should be
selected, copied to some graphics authoring program, saved as a png or tif
file and then imported into IVEO Creator.
When bit maps are imported, text is automatically subjected to OCR
(Optical Character Recognition) and is usually accurately converted to
"real" SVG text. Microsoft
Paint, the utility that comes as part of Windows, can be used to capture an
image saved to the clipboard. Paint then
permits exporting the image in a number of formats.
PDF
documents can be converted to SVG, but users should be warned that PDF files
may need some special attention. Many
PDF documents are images with no real text. They may be saved from Acrobat as a png or tiff file and those bit map
files imported into Creator Pro. The text
will then be OCR'ed. Many PDF files with real text embed the fonts and use internal coding to identify the
characters. When IVEO Converter is used
to convert such files, the text will read nonsensically in IVEO Creator Pro, Creator or
Viewer because the internal coding of the text characters can result in mis-identification of characters. However such mis-identification
can be repaired with the Repair Text menu item in the Creator Pro Edit menu. Some other graphic authoring applications
also convert with occasional incorrectly-identified text. These errors can also be repaired with the
Repair Text Creator Pro function. |
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B. |
Importing a Scanned Image |
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To import
from a scanner, the user should be sure that the scanner is properly installed,
place the desired document on the scanner (best results are obtained when the
document is oriented correctly), then select and click on the Scan menu item in
the IVEO Creator Pro file menu. The user is
then led through the standard options of the particular scanner, and then the
document is scanned into Creator Pro. After
scanning is complete, Creator Pro will announce that OCR (Optical Character
Recognition) is in progress. The time
needed for the OCR process depends on the speed of the user's computer but is
typically a few seconds. Text
recognition is generally excellent for standard documents scanned at a
resolution of 400 dpi or more. 200 dpi
is the minimum recommended for OCR. Accuracy is reduced if characters are very small, if the copy is not
sharp (e.g. FAX copies and poorly photocopied materials), if foreign or
scientific characters are present, or if fancy formatting, multicolors, etc.
are present as text or background to text. Text that has been incorrectly identified can be edited following
procedures described in Section D below. |
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C. |
Importing a Bit-map Image |
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Several
standard bit-map formats may be imported into IVEO Creator Pro. Click the Import menu item in the File menu
and select the file to be imported. JPG,
PNG, TIFF images may be imported, but GIF images are not accepted due to
proprietary claims on this format. However one may convert GIF files to other formats using Microsoft Paint. PNG is recommended.
The bit
map files are automatically OCR'ed and imported into an SVG file. In order to keep the size of the SVG file as
small as feasible, the bit map file is referenced and used when displaying in
IVEO Creator Pro, Creator or Viewer. Consequently
the bit map image should always be moved along with the SVG file if the file is
moved.
Most bit
map files made by scanning or copying within Windows applications are likely
to import well, but many web bit maps may not. Web authors commonly reduce the file size of images for efficiency, and
these can give quite strange results when imported and OCR'ed. It is common to give very small
"thumbnail images" intended mostly as a link to something more interesting. These small files seldom import well, so
users are encouraged to find larger, better resolution images. |
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D. |
Editing Text |
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The
Repair Text item in the Edit menu can only correct the character code of
characters, not the screen image of the character. If OCR mistakes have been made, the screen
image shows the character that the OCR engine has selected to represent the
original image, and Repair Text can have no effect. Consequently one must Edit Text if an OCR
error has been made. One should also
edit text if a word is broken into two or more text spans instead of being (and
reading as) a single word when selected.
When one
selects a text element, one may open the Edit Text dialog with ALT ENTER or by
clicking the Edit Element Properties item in the Edit menu. A list of words in that text element is given on screen along with
several buttons. One may arrow up and
down the text word list until one finds the word to be edited. Select it with ALT ENTER or by double-clicking
the mouse. Edit, then click OK or press
ENTER to accept the edited word, or click cancel or press ESC to cancel editing
without making any change. One edits
split words by expanding one part to the full word and deleting the other. Delete a word by editing it and deleting the
characters with DEL
or BACKSPACE.
Click the
Advanced button to edit other properties such as position, font, etc. The full SVG text parameters may be edited by
people who understand how to use this powerful editing capability. |
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