C# 关于用tesseract分析照片

我写这段代码是为了分析图片中包含的数字。启动时不会出现任何错误，但无法读取数字。当我启动程序时，它会显示一个空的

消息框

我想读这样的图片：

守则：

private string FotoAnaliz()
{
    FileStream fs = new FileStream("D:\\program_goruntusu.jpg", FileMode.OpenOrCreate);
    //string fotopath = @"D:\\program_goruntusu.jpg";
    Bitmap images = new Bitmap(fs);
    using (var engine = new TesseractEngine(@"./tessdata", "eng"))
    {
        engine.SetVariable("tessedit_char_whitelist", "0123456789");
        // have to load Pix via a bitmap since Pix doesn't support loading a stream.
        using (var image = new Bitmap(images))
        {
            using (var pix = PixConverter.ToPix(image))
            {
                using (var page = engine.Process(pix))
                {
                    sayı = page.GetText();
                    MessageBox.Show(sayı);
                    fs.Close();
                }
            }
        }
    }
    return sayı;
}

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尝试PSM 10：将图像视为单个字符

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尝试PSM 10：将图像视为单个字符