Image to text conversion

Question

I am trying to convert image to text using emguCV but it is showing me error tess.reconize instance not set for reference. My code is

 

using Emgu.CV;

using Emgu.Util;

using Emgu.CV.CvEnum;

using Emgu.CV.OCR;

using Emgu.CV.Structure;

using Emgu.CV.UI;

using Emgu.CV.Util;

namespace jo

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

Tesseract tess;

Image img;

private void button1_Click(object sender, EventArgs e)

{

DialogResult dr = openFileDialog1.ShowDialog();

if (dr == DialogResult.OK)

{

textBox1.Text = openFileDialog1.FileName;

}

img = Image.FromFile(openFileDialog1.FileName);

pictureBox1.Image = img; pro(); textBox2.Text = tess.GetText();

}

        public void load()

{

try

{

tess = new Tesseract("tessdata", "eng", Tesseract.OcrEngineMode.OEM_DEFAULT);

}

catch (Exception ex)

{

MessageBox.Show(ex.GetBaseException().ToString());

} }

private void Form1_Load(object sender, EventArgs e)

{ load(); }

public void pro() { tess.Recognize<Bgr>(new Image<Bgr, byte>(textBox1.Text)); } } }?