Performing Optical Character Recognition (OCR) on an image is a complex task. This topic explains step by step that how to extract text from image in C# quickly and easily. By using Aspose.OCR for .NET you can simply read characters from image in C# in a few steps.
Steps to Extract Text From Image in C#
- Use Aspose.OCR for .NET NuGet package
- Include Aspose.OCR namespace reference first
- Use SetLicense method to apply Aspose license
- Create an object of AsposeOcr Class instance
- Use RecognizeImage method to extract text from the image by applying OCR
- Save the extracted text to text file using FileStream and StreamWriter classes
The steps above shows you that reading characters from image in C# is very easy. The code for the above steps is given below.
Code to Extract Text From Image in C#
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| using System; | |
| using System.IO; | |
| //Add Aspose.OCR for .NET package reference | |
| //Use following namespaces to Extract Text from Image | |
| using Aspose.OCR; | |
| namespace ExtractTextFromImage | |
| { | |
| class Program | |
| { | |
| static void Main(string[] args) | |
| { | |
| //Set Aspose license before extracting text from image | |
| //using Aspose.OCR for .NET | |
| Aspose.OCR.License AsposeOCRLicense = new Aspose.OCR.License(); | |
| AsposeOCRLicense.SetLicense(@"c:\asposelicense\license.lic"); | |
| //Create an instance of AsposeOcr class before you can apply | |
| //OCR on an image to extract the text from it | |
| AsposeOcr ExtractTextFromImage = new AsposeOcr(); | |
| //Read image using RecognizeImage method on which OCR need to be applied for text extraction | |
| string TextExtractedFromImage = ExtractTextFromImage.RecognizeImage("ExampleOCRImageToExtractText.jpg"); | |
| //Save extracted text to a text file using File Stream and StreamWriter | |
| //classes of System.IO | |
| FileStream FStream = new FileStream("ExtractTextFromImageUsingOCR.txt", FileMode.Create); | |
| StreamWriter SWriter = new StreamWriter(FStream); | |
| //Write extracted text to the file | |
| SWriter.WriteLine(TextExtractedFromImage); | |
| SWriter.Flush(); | |
| //Close FileStream and StreamWriter bojects | |
| SWriter.Close(); | |
| FStream.Close(); | |
| } | |
| } | |
| } |
The approach is same for any type of .NET application if you’re using C# language. Whether you want to extract all the text from the image, or read text line by line from an image, Aspose.OCR for .NET can help you do that.
