How to highlight words and characters using the PDFDocument class

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While some posts in this topic are more current, this topic was posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Monday, August 29, 2011 6:08:00 AM(UTC)

Travis

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Posts: 207

Was thanked: 3 time(s) in 3 post(s)

This demo shows you how to use our PDFDocument class to parse a searchable PDF document; extracting the text. It displays each character in a listbox and highlights the character in the image when selected. The exact bounds of the character are also displayed in a text box just below the list box.

The demo also shows you how to convert the characters into words. The words are also displayed in a list box and also highlighted when selected with their coordinates displayed in the same text box as the characters.

This demo will only work with PDF's that are searchable and requires no OCR engine.

To perform the same task with a non-searchable PDF you will need an OCR engine. Please follow this link to find this same demo using an OCR engine instead to parse the PDF. The OCR engine will be able to parse other non-searchable formats as well (such as TIFF, JPEG, PNG, GIF, etc.)

This C# project was created with Visual Studio 2008.

File Attachment(s):

NET - V175 - Highlight Words - PDFDocument.zip (87kb) downloaded 194 time(s).

Edited by moderator Friday, August 9, 2019 10:58:20 AM(UTC) | Reason: Not specified

Travis Montgomery
Senior Sales Engineer


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#2 Posted : Friday, October 28, 2016 4:15:42 PM(UTC)

Walter

Groups: Tech Support
Posts: 366

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Was thanked: 4 time(s) in 4 post(s)

I've updated this project to use LEADTOOLS 19 with Visual Studio 2015.

File Attachment(s):

NET - V19 - Highlight Words - PDFDocument.zip (116kb) downloaded 210 time(s).

Edited by moderator Wednesday, January 11, 2017 4:29:49 PM(UTC) | Reason: Not specified

Walter Bates
Senior Support Engineer
LEAD Technologies, Inc.

#3 Posted : Wednesday, January 16, 2019 4:56:44 PM(UTC)

Marcus Andra

Groups: Registered, Manager, Tech Support, Administrators
Posts: 107

Was thanked: 9 time(s) in 9 post(s)

Updated project to v20 using 32-bit DLLs

File Attachment(s):

NET - V20 - Highlight Words - PDFDocument.zip (207kb) downloaded 115 time(s).

Edited by moderator Monday, August 5, 2019 12:20:41 PM(UTC) | Reason: Not specified

Marcus Andra
Developer Support Engineer
LEAD Technologies, Inc.

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