Thank you for purchasing a Canon Document Scanner.
CapturePerfect 3.1 is an ISIS-compatible application program that enables the computer to acquire
images from the Canon Document Scanner. To fully understand the CapturePerfect 3.1 functions and to
be able to use them effectively, please read this guide and the ISIS/TWAIN Driver Help guide as well as
your scanner's operating manual.
About Trademarks
•ISISTM and MultiStreamTM are trademarks of EMC Corporation.
• Microsoft, Windows, SharePoint, PowerPoint, and Windows Live are registered trademarks of Microsoft
Corporation in the United States and are trademarks or registered trademarks of Microsoft Corporation in
other countries.
• Product names mentioned herein are for identification purposes only and may be trademarks and/or
registered trademarks of their respective companies.
• TM and ® are not set forth in this manual.
Copyright
• libtiffs
Copyright (c) 1988-1996 Sam Leffler
Copyright (c) 1991-1996 Silicon Graphics, Inc.
Permission to use, copy, modify, distribute, and sell this software and its documentation for any purpose
is hereby granted without fee, provided that (i) the above copyright notices and this permission notice
appear in all copies of the software and related documentation, and (ii) the names of Sam Leffler and
Silicon Graphics may not be used in any advertising or publicity relating to the software without the
specific, prior written permission of Sam Leffler and Silicon Graphics.
THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS,
IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR ANY SPECIAL,
INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT
ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
• libjpeg
Portions of this software are based in part on the work of the Independent JPEG Group.
Reproduction Warning
• Reproduction of documents such as the following is illegal and subject to penalty: paper currency and
other legal tender, valuable instruments and passports issued by a government, as well as licenses,
certificates, permits, official documents, and private records issued by a public or private entity.
• Reproduction of copyrighted materials, such as documentation, pictures, imprints, maps, and illustrations,
for purposes other than personal use is prohibited.
2
Disclaimer
• Reproduction of the contents of this guide, in part or in whole, without prior permission is prohibited.
• This guide is subject to change without notice.
• Every effort has been made to ensure the accuracy of the information in this guide. However, Canon
Electronics Inc. and its subsidiaries assume no responsibility for any errors or their consequences.
• Confirm that your scanner is properly connected to the computer. Refer to your scanner's operating
manual for details.
• Before using CapturePerfect, install the ISIS/TWAIN driver for the scanner. Refer to your scanner's
operating manual for ISIS/TWAIN driver installation.
(→P. 15) : Describes scanner selection and setup procedures.
(→P. 16) : Describes the file types that can be saved by CapturePerfect.
(→P. 30) : Describes the MultiStream output functions.
(→P. 38) : Describes how to verify and edit the log files in which
5
About the CapturePerfect Window
The following window appears when CapturePerfect launches. The items in the window's menu and status
bar are described here.
File menuScan menuEdit menuView menuPage menuHelp menuStatus Bar
File menu
File menu Scan menuEdit menuView menuPage menuHelp menuStatus Bar
Open
Opens saved image files. The following file types saved by CapturePerfect can be opened: TIFF (*.tif),
JPEG (*.jpg), BMP (*.bmp) and PDF (*.pdf) files. Opening an Image File (→P. 72)
6
Save
This procedure saves open image files.
Note
If security is enabled for a PDF file, you are required to enter a password to open the file. Setting PDF
File Security Options (→P. 83)
Save As
This procedure saves open image files with a specified name. Saving an Image (→P. 70)
Close
Closes the open image file.
Close All the Files
Closes all open image files.
Image Info...
Displays information about the open image file.
Print
Prints the image displayed in the window. Printing an Image (→P. 74)
Print Format
Selects an image size for printing from the submenu.
•Actual Size
Regardless of the printing paper size or scan resolution, the image prints at the same size as the
original document.
• Fit to Paper
Reduces or enlarges images so they fit the size of the paper, and then prints.
• Actual Pixel
The image is printed so that one image pixel corresponds to one printer pixel. So the size of the
printed image is smaller when printing to a high resolution printer with small dots.
Printer Setting
Configure printer settings for printing images.
Exit
Exits CapturePerfect.
7
Scan menu
File menu Scan menu Edit menuView menuPage menuHelp menuStatus Bar
Select Scanner
Selects the scanner to be used. Scanner Selection (→P. 15)
Scanner Setting or button
Sets up the scanner. Scanner Settings (→P. 15)
Scan Page
Scans and displays a single document page. Scan Page (→P. 47)
Scan Batch to File or button
Continuously scans multiple pages of a document and simultaneously saves the page images to a file or
files. Scan Batch to File (Saves scanned images to a specified file) (→P. 48)
Scan Batch to Printer
Prints the images as documents are scanned. Select whether or not to save scanned images when
Scan Batch to Printer finishes. Scan Batch to Printer (Prints scanned images) (→P. 51)
Scan Batch to Mail or button
Attaches scanned images to an email. Select whether or not to save scanned images when Scan Batch
to Mail finishes. Scan Batch to Mail (Attaches scanned images to email) (→P. 53)
Scan Batch to SharePoint
Sends scanned images to a SharePoint server. Select whether or not to save scanned images when
Scan Batch to SharePoint finishes. Scan Batch to SharePoint (Sends scanned images to SharePoint
server) (→P. 56)
8
Scan Batch To Presentation
CapturePerfect switches to full-screen display before scanning. Select whether or not to save scanned
images when Scan Batch To Presentation finishes. Scan Batch to Presentation (Displays scanned
images full-screen) (→P. 59)
Note
In an environment with a projector connected to the computer, such as a presentation meeting, paper
documents can be scanned and instantly projected onto the screen for description.
Select Job or button
Select a job title from in the tool bar (the Job list box) and click to execute
the job. You can select the job title by selecting Create/Delete Job in the Scan menu. Job (Scan
According to a Previously Registered Job) (→P. 62)
Create/Delete Job
You can create, edit, or delete the job. Job (Scan According to a Previously Registered Job) (→P. 62)
Cancel Scan
Interrupts the current scanning operation.
Edit menu
File menuScan menu Edit menu View menuPage menuHelp menuStatus Bar
Undo
After performing a page operation (delete, insert/add or replace), undoes the change to revert to the
previous state.
Redo
Executes the operation that was last undone.
9
Brightness
Displays the Brightness dialog box for adjusting brightness and contrast of the displayed image.
Adjusting Brightness of the Displayed Image (→P. 76)
Rotate Left or button
Rotates the page image(s) specified in the submenu counterclockwise.
Rotate Right or button
Rotates the page image(s) specified in the submenu clockwise.
Copy
Copies the images selected by Select All or in the area specified by Pointer - Select the rectangle to the
clipboard.
Images copied to the clipboard can be pasted into other applications.
Select All
Selects all parts of the displayed image.
Pointer
Changes the pointer setting from the submenu when selecting a part of the displayed image area.
• Hand
The cursor changes to a hand shape when moving it over an image displayed in the image window.
When the image is magnified, the displayed area of the image can be moved by dragging.
• Select the rectangle
The cursor changes to a crosshair when moving it over an image displayed in the image window. By
dragging the crosshair cursor diagonally, the area dragged over is selected.
Password Settings
These settings determine password security when opening PDF files. Setting PDF File Security Options
(→P. 83)
10
Delete Password
When a PDF file with password security has been opened, this allows removing the security settings.
Canceling Security (→P. 84)
Modify Barcode/OCR
Activated when an image file is open, this option displays the Modify Barcode/OCR dialog box for
modifying the barcode or OCR recognition results. About Barcode/OCR Modification (→P. 38)
View menu
File menuScan menuEdit menu View menu Page menuHelp menuStatus Bar
Toolbar
Switches display of the toolbar on and off.
Statusbar
Switches the Status Bar (→P. 14) on and off.
Zoom In or button
Magnifies the view of the image.
Each time you select Zoom In in the View menu or click the Zoom In button, the view of the image is
magnified (Maximum 400%).
Zoom Out or button
Reduces the view of the image.
Each time you select Zoom Out in the View menu or click the Zoom Out button, the view of the image is
reduced (Minimum 10%).
Best Fit or button
Resizes the view of an image so that it all fits in the current window.
11
Fit to Width or button
Resizes the view of an image so that its width fits the current window.
One To One
Displays each image pixel as one pixel on the monitor. The image's actual displayed size depends on
the monitor size and resolution.
Split View
Splits the image display window into two or four screens. Split View (→P. 68)
Thumbnail
By opening the thumbnail window, open images can be viewed at reduced (thumbnail) size. Displaying
the Thumbnail Window (→P. 67)
Full Screen
Displays the open image on the full screen. With full screen display, the display status can be changed
from the submenu displayed by the right mouse button. Scan Batch to Presentation (Displays scanned
images full-screen) (→P. 59)
Page menu
File menuScan menuEdit menuView menu Page menu Help menuStatus Bar
Next page or button
Displays the image of the next page.
Prev. page or button
Displays the image of the previous page.
Last page
Displays the image of the last page.
12
First page
Displays the image of the first page.
Goto page
Displays the image on a specified page.
Delete Page
Deletes the open page.
Insert/Add pages
Inserts or adds a page to the open image file.
Added pages are read from the scanner or selected from existing files. Inserting/Adding Pages to an
Image File (→P. 77)
Replace Page
Replaces a page in the open image file.
Replacement pages are read from the scanner or selected from existing files. Replacing a Page in an
Image File (→P. 80)
Help menu
File menuScan menuEdit menuView menuPage menu Help Status Bar
About
Shows CapturePerfect version information.
Help or button
Shows this Help for CapturePerfect.
Initialize
Selecting OK initializes all of setting values of CapturePerfect.
If you select OK with the Job can be initialized check box selected, all jobs except factory preset ones
are initialized.
13
Status Bar
File menuScan menuEdit menuView menuPage menuHelp menu Status Bar
The image's display zoom (%), page number and scanner settings (mode, resolution and paper size) are
displayed on the Status bar.
Note
When CapturePerfect starts, the Status bar is displayed as "---".
14
Scanner Selection and Settings
Scanner Selection
Before using CapturePerfect, follow the procedure below to select a scanner to use with it. The selected
scanner setting is retained until another scanner is selected.
Important
Verify that your scanner is properly connected to the computer, and that the scanner and computer are both
turned on. Refer to your scanner's operating manual for details.
1 Click Select Scanner in the Scan menu.
The Select Scanner dialog box appears.
Note
If the name of the scanner does not appear in the dialog box, install the ISIS/TWAIN driver for the
scanner.
2 Select the scanner to be used, and click the OK button.
The Select Scanner dialog box closes and scanner selection is complete.
Scanner Settings
Before scanning a document, set up the scan settings. Settings remain in effect until changed.
1 Click Scanner Setting in the Scan menu, or click the button.
The scanner setting dialog box appears.
Note
• The settings dialog box displayed depends on your scanner model.
• Scanner settings can be made in the settings dialog box while scanning. Scanning Methods
• In case of using the Long Document mode, some functions may be restricted.
2 Make the appropriate settings for your scanning conditions.
For help related to these settings, click the Help button in the dialog box to refer to the driver help.
(→P. 46)
3 Click the OK button to exit the settings dialog.
15
About Saving Image Files
Image file types, file name requirements and multi-page files that can be saved with CapturePerfect are
described here.
About File Types
Images scanned with CapturePerfect can be saved as TIFF (*.tif), BMP (*.bmp), JPEG (*.jpg), PDF (*.pdf),
or PowerPoint (* .pptx) files. However, please note that the JPEG file type can be selected only when the
specified scanning mode is 256-level Gray, 24-bit Color, or Detect Color or Binary Image.
Scanning ModeFile types that can be saved
TIFFBMPPDFJPEGPowerPoint
Black and WhiteYesYesYesNoNo
Error DiffusionYesYesYesNoNo
Text EnhancedYesYesYesNoNo
Advanced Text EnhancementYesYesYesNoNo
Advanced Text Enhancement IIYesYesYesNoNo
High Speed Text EnhancementYesYesYesNoNo
256-level GrayYesYesYesYesYes
24-bit ColorYesYesYesYesYes
Detect Color or Binary ImageYesYesYesYesNo
Note
• The available scanning modes will differ depending on the scanner.
• When the file type is JPEG File (*.jpg), the image quality set by the Details of File Settings is applied.
Refer to Setting JPEG Compression
• When JPEG File (*.jpg) is selected as the file type with Detect Color or Binary Image as the scanning
mode, black and white images are saved as TIFF files using CCITT Group 4 compression, regardless of
the current TIFF file compression settings in the Options menu. Color images are saved as JPEG files
using the image quality settings by the Details of File Settings.
• When the file type is PDF File (*.pdf), the compression ratio set by the Details of File Settings is applied.
Refer to Setting PDF File Saving Options
(→P. 21) for details.
(→P. 19) for details.
File Type Settings
The following file-type-dependent settings are available. Settings are made by selecting the file type from
the Details of File Settings.
16
Setting TIFF File Compression Options
When TIFF file (*.tif) is selected for the file type in Save As dialog box, the compression format specified
here is applied.
1 Select TIFF tab in the Details of File Settings.
Note
Details of File Settings appears in the following screens.
• Scan Batch to File dialog box (
• Scan Batch to Mail dialog box (→P. 53)
• Scan Batch to SharePoint dialog box (→P. 56)
• Insert/Add the pages from the scanner dialog box (→P. 77)
• Replace the page from the scanner dialog box (→P. 80)
→P. 48)
2 Make the following settings:
• Compression
Select the compression format from the list box.
CCITT Group 4 can be selected when the image type is black and white, and OLD JPEG(6) or
JPEG(7) can be selected when the image type is grayscale or color. If compression is set to None,
saved files may be quite large.
17
Note
• CCITT Group 4
This compression format is used by faxes and other such devices for data transmission, and is used
to compress black and white images.
• OLD JPEG(6) and JPEG(7)
These compression formats are for saving grayscale and color images. When OLD JPEG(6) or
JPEG(7) is selected, the value set in the JPEG compression dialog box is applied.
Important
• OLD JPEG(6) is the JPEG format supported by Image Viewer that was bundled with Windows prior to
Windows 2000, and is no longer supported by the Windows Image and Fax Viewer bundled with
Windows XP.
• JPEG(7) is not supported by Image Viewer that was bundled with Windows prior to Windows 2000.
• The compression format supported by CapturePerfect may not be supported by other applications. If
a TIFF file saved by CapturePerfect cannot be opened by another application, set the compression to
None and save it again.
• JPEG compression
Select the image quality to be applied when OLD JPEG(6) or JPEG(7) is selected under the
Compression settings. Setting JPEG Compression (→P. 21)
3 Click the OK button.
The Details of File Settings dialog box closes.
18
Setting PDF File Saving Options
When saving scanned images as PDF (*.pdf) files, set the compression and OCR object language saving
options.
1 Select PDF tab in the Details of File Settings.
Note
Details of File Settings appears in the following screens.
• Scan Batch to File dialog box (
• Scan Batch to Mail dialog box (→P. 53)
• Scan Batch to SharePoint dialog box (→P. 56)
• Insert/Add the pages from the scanner dialog box (→P. 77)
• Replace the page from the scanner dialog box (→P. 80)
→P. 48)
2 Make the following settings:
• Create PDF/A file
When this check box is selected, PDF/A file is created. Mode is fixed to Standard. If Japanese,
Japanese and English, Simplified Chinese or Traditional Chinese is selected for Language for OCR,
you cannot create a PDF/A file.
•Mode
Select the PDF file compression ratio.
– High Compression
Files are saved with high compression. Image quality is degraded, but the file size is smaller.
– Standard
Files are saved with standard compression.
19
– Character Precedence
To prevent character legibility from degrading, only non-character areas are compressed when files
are saved.
Note
The Mode setting is only valid when the specified scanning mode is 256-level Gray or 24-bit Color, or
when a color document is detected with Detect Color or Binary Image as the scanning mode. If the
scanning mode is a two-color mode such as Black and White, or Error Diffusion, the size of the file
depends on the size of the document.
• Apply OCR
Select this check box to cause printed characters in the image to be recognized and saved as text
data attached to the recognized area.
• Language for OCR
When the Apply OCR check box is selected, you can select from the list box the language of the text
to be scanned.
• Detect outlined character
This setting is enabled only when the Apply OCR check box is selected. When this check box is
selected, outlines letters in the image can be recognized for the language assigned in Language for
OCR.
Note
– For PDF files (*.pdf) with attached OCR information, document character strings scanned as
images are recognized as text and saved as text data.
– When the Apply OCR check box is selected, deskewing is performed regardless of the scanner
driver's Deskew setting. If you scan sizes smaller than the set scan size or you set the TWAIN driver
Margin to a large value, the image is moved to the upper-left corner.
– Depending on documents, some images may be truncated if the Apply OCR box is selected. If this
happens clear the Apply OCR check box.
– In case of using the Long Document mode etc., OCR recognition results may not be applied.
• Hi-speed transfer
Hi-speed transfer can be enabled if your scanner supports JPEG transfers. This option may not be
displayed or available depending on the scanner you select.
When the scanning mode specified during scanner setup is 256-level Gray or 24-bit Color, this feature
applies JPEG compression to images transferred from the scanner to the computer.
• JPEG compression
Selects the image quality when Hi-speed transfer is selected. Setting JPEG Compression
3 Click the OK button.
The Details of File Settings dialog box closes.
20
(→P. 21)
Setting JPEG Compression
Select the image quality to be applied when saving scanned images as JPEG files, when Hi-speed transfer
is enabled under the PDF file settings, or when OLD JPEG(6) or JPEG(7) is selected under the TIFF file
settings. The selected image quality will determine the file size. The setting here interlocks with the scanner
setting.
1 Select JPEG tab in the Details of File Settings.
Note
Details of File Settings appears in the following screens.
• Scan Batch to File dialog box (
• Scan Batch to Mail dialog box (→P. 53)
• Scan Batch to SharePoint dialog box (→P. 56)
• Insert/Add the pages from the scanner dialog box (→P. 77)
• Replace the page from the scanner dialog box (→P. 80)
→P. 48)
2 Make the following settings:
Quality
Select the quality of files to be saved from the following choices. The slider position changes when an
item is selected from the list box.
Quality SettingSlider ValueImage QualityFile Size
High Quality90 (Auto)HighLarge
Standard75 (Auto)StandardStandard
High Compression10 (Auto)LowSmall
UserManual settingSee NoteSee Note
21
Note
When High Quality is selected, the quality of saved images has priority, but files are large. When High
Compression is selected, the size of saved image has priority, but image quality is poorer.
3 Click the OK button.
The Details of File Settings dialog box closes.
Setting PowerPoint File Saving Options
When saving scanned images as PowerPoint (*.pptx) files, set the OCR object language and file format for
image backup.
Note
• Only when the scanning resolution is set to 300 dpi, you can save the image as PowerPoint file.
• You can select up to A4 for paper size of PowerPoint file. However, if Match original size is selected for
paper size of the scanner settings, error may be occur even if the document is A4 size.
• If the scanner is set to any scanning mode other than 24-bit Color or 256-level Gray, you cannot save
scanned images in PowerPoint format.
1 Select POWERPOINT tab in the Details of File Settings.
Note
Details of File Settings appears in the following screens.
• Scan Batch to File dialog box (
• Scan Batch to Mail dialog box (→P. 53)
• Scan Batch to SharePoint dialog box (→P. 56)
→P. 48)
22
• Insert/Add the pages from the scanner dialog box (→P. 77)
• Replace the page from the scanner dialog box (→P. 80)
2 Make the following settings:
• Apply OCR
Select this check box to cause printed characters in the image to be recognized and saved as text
data attached to the recognized area.
• Language for OCR
When the Apply OCR check box is selected, you can select from the list box the language of the text
to be scanned.
Note
– For PowerPoint files (*.pptx) with attached OCR information, document character strings scanned
as images are recognized as text and saved as text data.
– When the Apply OCR check box is selected, deskewing is performed regardless of the scanner
driver's Deskew setting. If you scan sizes smaller than the set scan size or you set the TWAIN driver
Margin to a large value, the image is moved to the upper-left corner.
– Depending on documents, some images may be truncated if the Apply OCR box is selected. If this
happens clear the Apply OCR check box.
• Back up image
When selected, creates the backup image file in addition to the PowerPoint file.
• File Type
When Back up image is selected, selects the type of backup image file (TIFF, BMP, PDF, JPEG).
However, JPEG is available when the Image Format is set to 256-level Gray or 24-bit Color.
If both of the following conditions are satisfied, the error message is displayed during scanning.
– BMP or JPEG is specified for back up image
– Multi Page (All Pages) or Multi Page (Specified Pages) is selected for MultiPage Settings.
• Hi-speed transfer
Hi-speed transfer can be enabled if your scanner supports JPEG transfers. This option may not be
displayed or available depending on the scanner you select.
When the scanning mode specified during scanner setup is 256-level Gray or 24-bit Color, this feature
applies JPEG compression to images transferred from the scanner to the computer.
3 Click the OK button.
The Details of File Settings dialog box closes.
About Multi-Page Files
When scanning with Scan Batch to File (→P. 48) , Scan Batch to Mail (→P. 53) , or Scan Batch to
SharePoint (→P. 56) and when performing Save Open Image (→P. 70) , the Multi Page function can be
used to save multiple images to one TIFF or PDF file.
23
MultiPage Settings
MultiPage settings are made from a settings dialog box when Scan Batch to File (→P. 48) , Scan Batch to
Mail (→P. 53) , or Scan Batch to SharePoint (→P. 56) is selected for scanning.
Available MultiPage settings are determined by the file type (BMP, JPEG, TIFF, PDF or PowerPoint)
selected in the scan settings dialog box.
When BMP or JPEG is Selected
Only Single Page is available in the list box, and one image is saved per file. Besides, scanning information
can be included in the specified File Name by enabling Use Schema. About Schema (→P. 25)
When TIFF, PDF, or PowerPoint is Selected
• Single Page
Multiple scanned page images are saved as one image per file.
• Multi Page (All Pages)
All scanned page images are saved as one multi-page file.
• Multi Page (Specified Pages)
Page Number is enabled, and multiple scanned page images are saved to multiple multi-page files, each
with the specified number of pages.
When Multi Page (All Pages) or Multi Page (Specified Pages) is displayed in the list box, multiple page
images can be saved in one file.
Note
When Multi Page (Specified Pages) is selected, page images are saved to multiple multi-page files, divided
according to the number of pages specified in the Page Number field. Also, the batch separation type
specified in the Scan Batch to File (→P. 48) dialog box is changed to None.
24
About File Naming
Requirements and limitations of file names assigned to images scanned and saved by CapturePerfect are
described here.
About File Name Settings
After selecting the TIFF, PDF, or PowerPoint file type and specifying Multi Page (All Pages) or Multi Page
(Specified Pages) as the MultiPage Settings, multiple page images are saved in one file. About Multi-Page
Files (→P. 23)
About Schema
These settings are always applied to file/folder names saved when Single Page is selected as the
MultiPage Settings (→P. 24) . If no Schema settings have been made, a serial number consisting of four
digits (by default) is added to the specified file name. Example: docs0001.tif
25
File Name Settings
Selecting the check boxes in the Schema dialog box causes the checked information to be automatically
added to the names of files to be saved.
• The example file name reflects the effects selected by the check boxes.
• When Schema settings are performed with MultiStream settings, "Prim", "Seco", or “Tert” is added to the
specified file name.
The character strings to be added are as follows for each selected item:
• The Counter check mark cannot be cleared unless one of the following is selected: Barcode, Imprinter/
Addon, OCR, or Date.
• The Barcode, Imprinter/Addon and OCR check boxes cannot be selected at the same time.
• Barcode is valid when supported by the scanner, and when the Barcode Search scanner setting is
enabled. Up to four recognized barcode results can be added. However, the total number of characters
added cannot exceed 64.
• Selecting the OCR check box enables OCR recognition and adds the first 64 recognized characters to the
file name.
• If you use the value for Barcode or OCR, you can specify the way to add detected character strings to the
file name from the list box.
– Use detected string
Uses the detected strings as the file name. Invalid letters for file name are displayed in underscores.
– Use detected string of the back image if not detected
When no strings are detected, uses the strings detected in previous image. If there is no detected
strings in the first image, no strings are added.
26
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