Last year, as part of our 25 projects in 25 days, we created a MeteorJS app to perform OCR using the LEADTOOLS web services.

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Introduction

This post describes how to use LEADTOOLS (Windows or Linux) in .NET Core to convert almost any image to a PNG. This service can be used to display non-standard files in any modern web browser without installing plug-ins or third party code on the client.

Background

If you follow this tutorial, the resulting project demonstrates a quick and easy way to use 3rd party C API in .NET Core using DLLImport. Specifically, this project uses LEADTOOLS DLL/SO C API in .NET Core to convert files to PNG. Native .NET Core support is not available now available in LEADTOOLS version 20. An updated blog post that uses NuGet packages has been published for version 20.

LEAD is continuously updating and adding new features to LEADTOOLS. One feature that was rolled into Version 19 after the initial release includes enhanced SVG support. This enhancement allows users to load document and vector formats as SVG, which can then be handed off to other parts of LEADTOOLS such as the Document Writers. In other words, you can convert from formats such as DOC, PDF, DWG, DXF, etc. to other document formats such as PDF/A, HTML, and SVG without rasterization or OCR.

In Convert a Word Document to PDF (C#), I attached a project to show how to do the conversion in .NET. Now I have attached a C/C++ version of the project that will convert vector and document formats to PDF.

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.

Computer vision is a field of artificial intelligence that trains computers to interpret and understand the visual world. Using digital images from cameras and videos and deep learning models, machines can accurately identify and classify objects — and then react to what they “see”. LEADTOOLS is built upon nearly 30 years of programming and patented AI algorithms dealing with the understanding of images and videos. When it comes to putting computer vision into practice, we’ve got you covered!