Extract Image Information - Console C#

This tutorial shows how to create a C# Windows Console application that uses the CodecsImageInfo class to get information about the various image files supported by LEADTOOLS.

Required Knowledge

Get familiar with the basic steps of creating a project by reviewing the Add References and Set a License tutorial, before working on the Extract Image Information - Console C# tutorial.

Create the Project and Add LEADTOOLS References

Create a new C# Windows Console project, and add the below necessary LEADTOOLS references.

The references needed depend upon the purpose of the project. References can be added by one or the other of the following two methods (but not both). For this project, the following references are needed:

If using NuGet references, this tutorial requires the following NuGet package:

• Leadtools.Formats.Raster.Common

If using local DLL references, add the following DLLs:

The local DLLs are located at <INSTALL_DIR>\LEADTOOLS21\Bin\Dotnet4\x64

• Leadtools.dll
• Leadtools.Codecs.dll
• Leadtools.Codecs.Cmp.dll

For a complete list of which Codec DLLs are required for specific formats, refer to File Format Support.

Set the License File

The License unlocks the features needed for the project. It must be set before any toolkit function is called. For details, including tutorials for different platforms, refer to Setting a Runtime License.

There are two types of runtime licenses:

• Evaluation license, obtained at the time the evaluation toolkit is downloaded. It allows the toolkit to be evaluated.
• Deployment license. If a Deployment license file and developer key are required, refer to Obtaining a License.

Note

Adding LEADTOOLS NuGet and local references and setting a license are covered in more detail in the Add References and Set a License tutorial.

Add the Get Image Information Code

With the project created, the references added, and the license set, coding can begin.

Open the Program.cs in the Solution Explorer. In the Program class, add a new method called RasterCodecsImageInfo(@"C:\LEADTOOLS21\Resources\Images\image1.cmp");. Then add the below CodecsImageInfo code inside the new method. The method's parameter will be the file path to the image from which the information is to be gathered. For this tutorial, this sample image will be used.

// Using block at the top 
using System; 
using System.IO; 
using Leadtools; 
using Leadtools.Codecs; 

RasterCodecsImageInfo(@"C:\LEADTOOLS21\Resources\Images\image1.cmp"); 

static void RasterCodecsImageInfo(string fileName) 
{ 
    using (RasterCodecs codecs = new RasterCodecs()) 
    { 
        CodecsImageInfo info = codecs.GetInformation(fileName, true); 
        string inputFileName = Path.GetFileNameWithoutExtension(fileName); 
        string codecsInfoString = ($"Image Format: {info.Format}\n" + 
                $"Information for: {inputFileName}\n" + 
                $"BitsPerPixel: {info.BitsPerPixel}\n" + 
                $"BytesPerLine: {info.BytesPerLine}\n" + 
                $"ColorSpace: {info.ColorSpace}\n" + 
                $"Byte Order: {info.Order}\n" + 
                $"Image Height: {info.Height}\n" + 
                $"Image Width: {info.Width}\n" + 
                $"Image X Resolution: {info.XResolution}\n" + 
                $"Image Y Resolution: {info.YResolution}\n" + 
                $"Compression: {info.Compression}\n" + 
                $"Page Number: {info.PageNumber}\n" + 
                $"Total Pages: {info.TotalPages}"); 
 
        Console.WriteLine(codecsInfoString); 
    } 
} 

Note

There are more properties inside the CodecsImageInfo class. The snippet above showcases the most commonly used properties.

Because the RasterCodecs class implements IDisposable, make sure it is in a using statement for proper disposal.

Run the Project

Run the project by pressing F5, or by selecting Debug -> Start Debugging.

If the steps were followed correctly, the application runs and the console displays the file's information.

Wrap-up

This tutorial showed how to use the CodecsImageInfo class.

See Also

• LEADTOOLS CodecsImageInfo Documentation
• LEADTOOLS RasterCodecs Documentation
• LEADTOOLS SDK Download Link