I've got a photo that I am attempting to CNC into a relief image. The photo is of a family dog that is brindle. Because the dog is brindle with a non-uniform coat color, the standard heightmap generator plugin in CB doesn't work very well. I've tried many things from the list below alone and in combination to simplify the image without losing details but have not had much luck. Things attempted so far are:
- Reduce grayscale depth of photo. It doesn't help unless I go down to two colors (black/white). But then the image details go down the toilet.
- Apply some blurring filter to the photo to smooth out the abrupt shading changes
- Apply an embossing filter to the photo
- Apply some edge detection filters to the photo
Finally, I converted the image to a true surface in CB with Draw -Surface ->From Bitmap. After converting the image, I then did Edit ->Surface ->Silhouette. The attempt was to do some edge detection on the complex surface so I could set up some machining boundaries. But the problem I have with this method is I end up with a ton of tiny polygons. If I could delete all the tiny polygons, I think I would have some workable boundaries to machine. In CB, is there an automated way to delete polygons less than a certain area?