public ActionResult Canny(HttpPostedFileBase imageData) { if (imageData != null) { using (var image = IplImage.FromStream(imageData.InputStream, LoadMode.Color)) { using (var grayImage = new IplImage(image.Size, BitDepth.U8, 1)) using (var cannyImage = new IplImage(image.Size, BitDepth.U8, 1)) { Cv.CvtColor(image, grayImage, ColorConversion.BgrToGray); Cv.Canny(grayImage, cannyImage, 60, 180); byte[] cannyBytes = cannyImage.ToBytes(".png"); string base64 = Convert.ToBase64String(cannyBytes); ViewBag.Base64Image = base64; byte[] originalBytes = image.ToBytes(".png"); string base64Org = Convert.ToBase64String(originalBytes); ViewBag.Base64OrgImage = base64Org; byte[] grayBytes = grayImage.ToBytes(".png"); string base64Gray = Convert.ToBase64String(grayBytes); ViewBag.Base64GrayImage = base64Gray; } } } return View(); }