4/25/2024 0 Comments Pin drop transparent![]() The basic design of this app requires three major functions to be addressed, given the requirements above: Having no control over the size, aspect ratio, brightness or contrast of the original/input images, the watermark needs to look good on a wide variety of image types without making the user fiddle with settings.This is a quickie project, so the UI should be very simple, with most functions handled "automagically" for the user, like:.Since most casual users don't know how to use Char map or to generate a proper © copyright symbol, we could append this automatically for the user.The watermark needs to be generated from user-entered text.Having the watermark overlay the image translucently (like a network bug in the bottom-right corner of your TV screen) seems to be a fairly straightforward way of achieving this. The image watermark has to be prominent and difficult to remove by e.g.In this case, I thought the scenario justified creating a simple application that would de-skill the process of adding watermarks to images. Most folks don't work with PhotoShop, Paint Shop Pro or the like on a regular basis, and similarly most folks don't want to take the time or effort to acquire and learn these apps. Our need is to add some simple identifying information to the image - perhaps a business name, a logo, or the URL of the photo album - which would be difficult to remove or obscure. In either scenario, a watermark would solve the problem nicely. Or suppose your client is a professional photographer who wants a way to offer proofs to clients that show off the full glory of his ultra-high-resolution equipment, yet he doesn't want to risk having those proofs used by the customer without paying for the images. Suppose someone wants to post their digital pictures to a photo hosting site, but they don't want their images being swiped by others and used without their knowledge, and they also don't want to have to keep reminding Aunt Edna where their family photo albums can be found on the internet. Here are two scenarios that might call for adding a watermark to an image. That shouldn't be too daunting, now should it? There are already several articles available on popular developer sites describing how to add a watermark to an image, so instead of rehashing what's already out there, I want to describe a specific scenario I needed to deal with, deal with some issues that needed addressing in other approaches I encountered, then describe the approach that worked best for addressing my scenario. In fact, the code module for my own watermark helper class contains a whopping 122 lines of code, including white space, unused functions and some leftover test code. NET framework eliminate majority of the difficulty in a task like this. Today, however, the GDI+ components in the. In the days of VB 4, 5 and 6, accomplishing this would have been a fairly involved undertaking. Here, I'm just referring to some sort of visible copyright notice, logo, bug, or text - basically, any sort of visual device that says "hey, this image belongs to so and so," as a small measure of copyright protection that can be applied to the image itself. ![]() I'm not talking about digital signatures or machine-readable hidden text here, though some image processing applications use the term "watermark" to refer to those. A frequent need in graphics processing is that of adding a "watermark" of some sort to an image.
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