Databases
StackOverflow2013
Postsdbo
POC# - Add watermark to the photo by special way
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POC# - Add watermark to the photo by special way
    primarykey
    data
    text
    <p>I need add watermark to the photo by special way. I know how to do it, but I dunno how to do it the same way as in article <a href="http://www.photoshopessentials.com/photo-effects/copyright/" rel="noreferrer">http://www.photoshopessentials.com/photo-effects/copyright/</a></p> <p>Here is method to add watermark. How I can change it to get image with watermark such as in article above?</p> <pre><code>public static Bitmap AddWatermark(this Bitmap originalImage, Bitmap watermarkImage, WatermarkLocationEnum location) { int offsetWidth; int offsetHeight; if ((watermarkImage.Width &gt; originalImage.Width) | (watermarkImage.Height &gt; originalImage.Height)) throw new Exception("The watermark must be smaller than the original image."); Bitmap backgroundImage = new Bitmap((Bitmap)originalImage.Clone()); Bitmap image = new Bitmap(backgroundImage.Width, backgroundImage.Height); Graphics graphics = Graphics.FromImage(image); offsetWidth = GetOffsetWidth(image.Width, watermarkImage.Width, location); offsetHeight = GetOffsetHeight(image.Height, watermarkImage.Height, location); watermarkImage.SetResolution(backgroundImage.HorizontalResolution, backgroundImage.VerticalResolution); offsetWidth = Math.Max(offsetWidth - 1, 0); offsetHeight = Math.Max(offsetHeight - 1, 0); graphics.DrawImage(watermarkImage, offsetWidth, offsetHeight); for (int i = offsetWidth; i &lt; (offsetWidth + watermarkImage.Width); i++) { for (int j = offsetHeight; j &lt; (offsetHeight + watermarkImage.Height); j++) { Color pixel = image.GetPixel(i, j); if (pixel.A &gt; 0) { Color color = Color.FromArgb(pixel.A, pixel.R, pixel.G, pixel.B); Color imagePixelColor = backgroundImage.GetPixel(i, j); double alpha = (double)color.A / 255; Color newColor = Color.FromArgb(255, (int)((double)imagePixelColor.R * (1.0 - alpha) + alpha * color.R), (int)((double)imagePixelColor.G * (1.0 - alpha) + alpha * color.G), (int)((double)imagePixelColor.B * (1.0 - alpha) + alpha * color.B)); backgroundImage.SetPixel(i, j, newColor); } } } return backgroundImage; } //............ Image img = Bitmap.FromFile("DSC00766.JPG"); var wtm = (Bitmap)Bitmap.FromFile("Copyright1.jpg"); ((Bitmap)img).AddWatermark(wtm, WatermarkLocationEnum.BottomCenter).Save("new.jpg", System.Drawing.Imaging.ImageFormat.Jpeg); </code></pre> <p><strong>UPDATE</strong></p> <p>1 attach- expect result<br> 2 attach- current result <img src="https://i.stack.imgur.com/7HsQT.jpg" alt="expect result"> <img src="https://i.stack.imgur.com/52HV8.jpg" alt="current result"></p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJeff Ogata
    1. USAlexandre
    plurals
    1. This table or related slice is empty.
    1. PL
      singulars
      1. LTLinked
    2. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POC# - Add watermark to the photo by special way
      1. USasifabbas
      1. VTFavorite
    2. VO
      singulars
      1. POC# - Add watermark to the photo by special way
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POC# - Add watermark to the photo by special way
      1. USCD..
      1. VTFavorite
    1. COHow is the result of your code different from that shown in the article? What, exactly, are you asking for help with?
      singulars
      1. POC# - Add watermark to the photo by special way
      1. USJim Mischel
    2. COThis code is really bad. You shoud `Dispose` all these objects.
      singulars
      1. POC# - Add watermark to the photo by special way
      1. USGSerg
    3. COI doesn't matter. I need to get algorithm.
      singulars
      1. POC# - Add watermark to the photo by special way
      1. USAlexandre
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload