Recognize an area inside Image

[TimK (Tim Kok)]

There probably is a better solution, could you could loop through the images pixels (using Bitmap) to look for the first instance (top left) and last instance (bottom right) of that particular colour (yellow - as long as that colour doesn’t appear on the page anywhere else. This would give you your area for the image (you need to calculate the height and width)
You can then use this Crop Image to crop your image.

Hope this helps or gives you a starting point.