When LEAD Technologies set out to create its HTML5 SDK, we wanted to do it right by making LEADTOOLS the fastest and most interactive toolkit available. Thanks to our many customers investing in and developing with this technology, we take that as a vote of confidence that we have succeeded in attaining that goal.

There are many ways to design a zero footprint application, and unfortunately the performance and quality often suffer due to many applications simply pushing all of the image processing to a server. With the LEADTOOLS JavaScript libraries, you can gain all the advantages of zero footprint development without losing the user-friendliness of an application that can provide instantaneous visual feedback.

As part of the LEAD Technologies 25th anniversary, we are creating 25 projects in 25 days to celebrate LEAD's depth of features and ease of use. Today's project comes from Faris.

What it Does

This project will perform various image cleanup functions until a barcode is recognized using LEADTOOLS Version 19. To run the project, extract it to the C:\LEADTOOLS 19\Examples\DotNet\CS directory.

As I mentioned in my previous post, Correct Photos of Documents – Ambient Lighting, most images of documents suffer from skew. There are two types of skew: two-dimensional and three-dimensional.

Text is typically parallel to the top and bottom of the paper. Simply put, two-dimensional skew is the angle of the text when compared to the top or bottom edge of the image. This type of skewing can occur in photos of documents as well as document images produced by a scanner. While it is relatively easy to correct with a simple rotate, determining the angle of rotation can be tricky. Fortunately, LEADTOOLS includes a DeskewCommand class that can determine the angle of skew.

Tonal range is an important attribute of an image, especially photographs, when trying to improve OCR results. Tonal range is the range of tones between the lightest and darkest areas of an image and is also known as contrast. An image with a wide range has both very dark (black) and very light (white) elements. An image with a narrow range is more limited in its tonal scope, which is usually in the mid-ranges (varying shades of grays).

Yesterday, we introduced LEADTOOLS Version 20 and its new development platforms to you. Today we're diving into the features.

Overall, the toolkit is faster and more efficient, and major areas of focus in this release were the Recognition Engines, Document Viewer, Document Formats, Medical Web Viewer, and Hanging Protocols.