Problem of the Day
A new programming or logic puzzle every Mon-Fri

Today's problem breaks out of the normal mode and into graphics mode. Your goal is to create a function that takes in an image and returns the color of the top left most pixel. For instance if you used this image your function should return #0000FE.

Comments:

• Daniel - 10 years, 6 months ago

  C#. System.Drawing namespace makes this incredibly easy.

      public string GetPixelHexValue(string strImagePath)
      {
          if (System.IO.File.Exists(strImagePath))
          {
              Bitmap objBitmap = new Bitmap(strImagePath);
              Color objColor = objBitmap.GetPixel(1, 1);
              return ColorTranslator.ToHtml(objColor);
          }
          else
          {
              throw new System.IO.FileNotFoundException();
          }
      }
  

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• Daniel - 10 years, 6 months ago

  To be lazier, you could replace

          Bitmap objBitmap = new Bitmap(strImagePath);
          Color objColor = objBitmap.GetPixel(1, 1);
          return ColorTranslator.ToHtml(objColor);
  

  with

          return ColorTranslator.ToHtml(new Bitmap(strImagePath).GetPixel(1, 1));
  

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• Nick Krichevsky - 10 years, 6 months ago

  Python soloution with Pillow

  from PIL import Image
  im = Image.open('image.jpg').convert('RGB')
  pixel = im.getpixel((0,0))
  print ('#%02x%02x%02x' % pixel).upper()
  

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