The question is old, but still receives a lot of attention. As the existing answers are outdated, here a more up-to-date solution: Resizing local images As of knitr 1.12, there is the function include_graphics. From ?include_graphics (emphasis mine): The major advantage of using this function is that it is portable in the sense that it … Read more
Normal hashing or CRC calculation algorithms do not work well with image data. The dimensional nature of the information must be taken into account. If you need extremely robust fingerprinting, such that affine transformations (scaling, rotation, translation, flipping) are accounted for, you can use a Radon transformation on the image source to produce a normative … Read more
You might consider K-means, yet in this case it will most likely be extremely slow. A better approach might be doing this “manually” on your own. Let’s say you have image of type CV_8UC3, i.e. an image where each pixel is represented by 3 RGB values from 0 to 255 (Vec3b). You might “map” these … Read more
I think I have figured out the GoogleImageProxy issue. This is something related to CACHING concept. suppose, you have recently deployed your php code on your server but you forgot to upload images. you tested once with your email logic. your system generated an HTML email. When this email will hit the gmail server GoogleImageProxy … Read more
Sample the circumference points Just scan your image and select All Black pixels with any White neighbor. You can do this by recoloring the remaining black pixels to any unused color (Blue). After whole image is done you can recolor the inside back from unused color (Blue) to white. form a list of ordered circumference … Read more
First of all, you should make an HTML form containing a file input element. You also need to set the form’s enctype attribute to multipart/form-data: <form method=”post” enctype=”multipart/form-data” action=”/upload”> <input type=”file” name=”file”> <input type=”submit” value=”Submit”> </form> Assuming the form is defined in index.html stored in a directory named public relative to where your script is … Read more
One problem in your code is cv::threshold which only uses 1 channel images. Finding the pixelwise “difference” between two images in only grayscale often leads to unintuitive results. Since your provided images are a bit translated or the camera wasnt stationary, I’ve manipulated your background image to add some foreground: background image: foreground image: code: … Read more
Have a look at the following @using (Html.BeginForm(“FileUpload”, “Home”, FormMethod.Post, new { enctype = “multipart/form-data” })) { <label for=”file”>Upload Image:</label> <input type=”file” name=”file” id=”file” style=”width: 100%;” /> <input type=”submit” value=”Upload” class=”submit” /> } your controller should have action method which would accept HttpPostedFileBase; public ActionResult FileUpload(HttpPostedFileBase file) { if (file != null) { string pic … Read more
I’ve upvoted Johannes’ answer because he’s right about that. * A few comments have been raised that my original answer was not correct. It worked if alpha values were inverted from the normal. By definition, however, this won’t work in most cases. I’ve therefore updated the formula below to be correct for the normal case. … Read more
You can create an extension method for HtmlHelper to simplify the code in your CSHTML file. You could replace your tags with a method like this: // Sample usage in CSHTML @Html.ActionImage(“Edit”, new { id = MyId }, “~/Content/Images/Image.bmp”, “Edit”) Here is a sample extension method for the code above: // Extension method public static … Read more