compare two images using visual studio 2010 MVC 4

Please refer below code.

HTML

<div>
    <style type="text/css">
        #dvPreview1, #dvPreview2
        {
            filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=image);
            height: 100px;
            width: 100px;
            display: none;
        }
    </style>
    <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
    <script language="javascript" type="text/javascript">
        $(function () {
            $("#fileupload1").change(function () {
                $("#dvPreview1").html("");
                var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.jpg|.jpeg|.gif|.png|.bmp)$/;
                if (regex.test($(this).val().toLowerCase())) {
                    if ($.browser.msie && parseFloat(jQuery.browser.version) <= 9.0) {
                        $("#dvPreview1").show();
                        $("#dvPreview1")[0].filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = $(this).val();
                    }
                    else {
                        if (typeof (FileReader) != "undefined") {
                            $("#dvPreview1").show();
                            $("#dvPreview1").append("<img />");
                            var reader = new FileReader();
                            reader.onload = function (e) {
                                $("#dvPreview1 img").attr("src", e.target.result);
                            }
                            reader.readAsDataURL($(this)[0].files[0]);
                        } else {
                            alert("This browser does not support FileReader.");
                        }
                    }
                } else {
                    alert("Please upload a valid image file.");
                }
            });
            $("#fileupload2").change(function () {
                $("#dvPreview2").html("");
                var regex = /^([a-zA-Z0-9\s_\\.\-:])+(.jpg|.jpeg|.gif|.png|.bmp)$/;
                if (regex.test($(this).val().toLowerCase())) {
                    if ($.browser.msie && parseFloat(jQuery.browser.version) <= 9.0) {
                        $("#dvPreview2").show();
                        $("#dvPreview2")[0].filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = $(this).val();
                    }
                    else {
                        if (typeof (FileReader) != "undefined") {
                            $("#dvPreview2").show();
                            $("#dvPreview2").append("<img />");
                            var reader = new FileReader();
                            reader.onload = function (e) {
                                $("#dvPreview2 img").attr("src", e.target.result).css('width', '250px').css('height', '250px');
                            }
                            reader.readAsDataURL($(this)[0].files[0]);
                        } else {
                            alert("This browser does not support FileReader.");
                        }
                    }
                } else {
                    alert("Please upload a valid image file.");
                }
            });
        });
    </script>
    <% using (Html.BeginForm("CompareImage", "Compare", FormMethod.Post, new { enctype = "multipart/form-data" }))
        {                             
    %>
    <input id="fileupload1" type="file" name="file1" />
    <input id="fileupload2" type="file" name="file2" />
    <hr />
    <div id="dvPreview1">
    </div>
    <div id="dvPreview2">
    </div>
    <br />
    <input type="submit" value="Compare" />
    <%} %>
</div>

CompareController(Controller)

public ActionResult Index()
{
    return View();
}

public ActionResult CompareImage()
{
    HttpFileCollectionBase hfc = HttpContext.Request.Files;
    for (int i = 0; i < hfc.Count; i++)
    {
        HttpPostedFileBase hpf = hfc[i];
        if (hpf.ContentLength > 0)
        {
            string fileName = "";
            if (Request.Browser.Browser == "IE")
            {
                fileName = Path.GetFileName(hpf.FileName);
            }
            else
            {
                fileName = hpf.FileName;
            }
            using (MemoryStream ms = new MemoryStream())
            {
                hpf.InputStream.CopyTo(ms);
                byte[] array = ms.GetBuffer();
            }
        }
    }
    // Write code to Compare two Face Images
    return View("Index");
}

Refer below links to compare two face images

1. http://stackoverflow.com/questions/23931/algorithm-to-compare-two-images
2. http://www.codeproject.com/Questions/719844/How-to-compare-two-images-using-OpenCV-or-EmguCV-f

I hope this will help you out.