public ReadOnlyCollection<double> CompareImageFromPdf(string path, string testImage)
{
List<double> match = new List<double>();
List<System.Drawing.Image> ImgList = new List<System.Drawing.Image>();
ImgList = GetImages(path);
ImgList.ForEach(img => img.Save("Image_" + Guid.NewGuid() + ".bmp"));
ImgList.ForEach(img => match.Add(ImageTest(testImage, img)));
return match.AsReadOnly();
}