Can't read blur images
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 15/100
- Issue type
- Bug
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- csharp
- Domain
- computer-vision
Research direction
The reporter's code is in the issue body: a BarcodeReader with AutoRotate, TryHarder and TryInverted set, decoding a Bitmap built by ConvertBase64ToImage from Image.FromStream. The failing image is only linked externally, not in the repository, so first obtain it and reproduce the null result. Done means the sample decodes, or the maintainers explain which preprocessing it needs. The thread has been quiet for about 983 days with no assignee or pull request, so confirm with a maintainer before starting.
Written by the indexing model from the issue text.
Description
Hi @micjahn,
Unable to read the blurry type images using zxing.net dll and below is my code and blur image base64 data:
string scannedData = "Here I have base64 of the image";
Image image = ConvertBase64ToImage(scannedData);
Bitmap bitmap = (Bitmap)image;
BarcodeReader barcodeReader = new BarcodeReader{ AutoRotate = true };
barcodeReader.Options.TryHarder = true;
barcodeReader.Options.TryInverted = true;
Result barcodeResult = barcodeReader.Decode(bitmap);
if (barcodeResult != null)
{
Console.WriteLine("BarCode Result - BarCode Text is: " + barcodeResult.Text + " ; BarCode Format is: " + barcodeResult.BarcodeFormat.ToString());
}
else
{
Console.WriteLine("BarCode Result is null");
}
private static Image ConvertBase64ToImage(string base64string)
{
try
{
byte[] imageBytes = Convert.FromBase64String(base64string);
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
//Convert byte[] to Image
ms.Write(imageBytes, 0, imageBytes.Length);
Image image = Image.FromStream(ms, true);
ms.Dispose();
return image;
}
catch (OutOfMemoryException ex)
{
Console.WriteLine($"Memory Out of Exception occured while converting base64 to Image and Message is : {ex.Message} & stack trace: {ex.StackTrace}");
return null;
}
catch (Exception ex)
{
Console.WriteLine($"Exception occured while converting base64 to Image and Message is : {ex.Message} & stack trace: {ex.StackTrace}");
return null;
}
}
Colud you help me on this how to Decode this type of images.
Thanks,
Rajesh
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