Not Able To Use PixConverter.ToPix Leptonica C#

Question

I wanted to convert a bitmap to Leptonica.Pix.. So after I did a search I found someone who had the same problem here: Tesseract .NET Process image from memory object

So the solution to this problem was to use PixConverter.ToPix() method.

My problem here is that I can't find this method in the latest installed Leptonica Package. I tried to remove the and reinstall the lateset version thought Nuget but the method is still not not there.

What should I do to be able to use PixConverter.ToPix()?. Thanks in advance.

EDIT: I forgot to mention that i'm using the latest Tessercat pacakge too.

Just curious, is this .net framework, or core, or standard? – TheGeneral May 24 '18 at 00:51 — TheGeneral, May 24 '18 at 00:51

score 2 · Answer 1 · answered Feb 10 '21 at 16:28

2

In Tesseract 4 there is a new way to convert this using the following syntax:

var pixFromByteArray = Pix.LoadFromMemory(byteArray);
var pixFromFile = Pix.LoadFromFile(fileName);

answered Feb 10 '21 at 16:28

Carlo Bos

3,105
2
16
29

score 1 · Answer 2 · answered Apr 02 '19 at 19:01

1

You need to use the version "3.0.2" for this (PixConverter.ToPix()) to work.

So your .csproj file should have this exact match in version:

<PackageReference Include="Tesseract" Version="3.0.2" />

Hope it helps.

answered Apr 02 '19 at 19:01

Felipe de Macêdo

304
5
5

I am using 3.3.0 and the issue still persist. – Pratap Singh Mehra Dec 25 '19 at 11:00
@PratapSinghMehra did you try with version 3.0.2 ? – Felipe de Macêdo Dec 26 '19 at 12:24
No. So I used Pix.LoadTiffFromMemory(fileBytes)) method – Pratap Singh Mehra Dec 26 '19 at 13:41

TheGeneral · Accepted Answer · 2018-05-24T01:20:29.910

It lives in Tesseract namespace, more information can be found here https://github.com/charlesw/tesseract

namespace Tesseract
{
    /// <summary>
    /// Handles converting between different image formats supported by DotNet.
    /// </summary>
    public static class PixConverter
    {
        private static readonly BitmapToPixConverter bitmapConverter = new BitmapToPixConverter();
        private static readonly PixToBitmapConverter pixConverter = new PixToBitmapConverter();

        /// <summary>
        /// Converts the specified <paramref name="pix"/> to a Bitmap.
        /// </summary>
        /// <param name="pix">The source image to be converted.</param>
        /// <returns>The converted pix as a <see cref="Bitmap"/>.</returns>
        public static Bitmap ToBitmap(Pix pix)
        {
            return pixConverter.Convert(pix);
        }

        /// <summary>
        /// Converts the specified <paramref name="img"/> to a Pix.
        /// </summary>
        /// <param name="img">The source image to be converted.</param>
        /// <returns>The converted bitmap image as a <see cref="Pix"/>.</returns>
        public static Pix ToPix(Bitmap img)
        {
            return bitmapConverter.Convert(img);
        }
    }
}

As per the sites landing page

Add the Tesseract NuGet Package by running Install-Package Tesseract from the Package Manager Console.

Also, its worth while reading the site thoroughly.

Disclaimer, i have never used this library before, just looked up the information

Update

Just to make sure i wasn't giving you bad information, I created a new project, downloaded the latest Tesseract nuget. And was able to do the following.

using Tesseract;

...

PixConverter.ToPix()

Update2

The problem you are noticing is because you are using

https://www.nuget.org/packages/tesseract.net/

apposed to

https://www.nuget.org/packages/Tesseract/

Now 'im not sure what one you actually want. However that method dosnt not exist in the former

I'm using the latest Tessercat package too and still not able to use the method. — mkabbanii, May 24 '18 at 00:46
Ok so it turned out the this method exists in 3.0.2 version.. Are you using this version> @TheGeneral — mkabbanii, May 24 '18 at 01:04
Well the problem is that this method doesn't exist in v4+ versions. — mkabbanii, May 24 '18 at 01:13
@Mick2160 i didn't see any v4 versions, however im glad you have figured it out — TheGeneral, May 24 '18 at 01:14
That's why I need the method which I stated in the question. — mkabbanii, May 24 '18 at 01:21

Hussin Tsouli · Answer 4 · 2023-07-12T16:53:32.717

0

i solved for myself by adding tesseract.drawing package :

check screenshot here

just install it and it will be solved

edited Jul 12 '23 at 16:53

answered Jul 10 '23 at 12:55

Hussin Tsouli

1
2

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jul 12 '23 at 14:49

Not Able To Use PixConverter.ToPix Leptonica C#

4 Answers4

Update

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