I wonder, for some of the heavy brushstrokes Impressionists, a lidar scan would almost be appropriate. Some of the paintings where the paint is in physical clumps on the canvas, it has its own 3d quality to it that looks different from different angles. I don't think it will get captured with a single image taken from straight on.<p>Like this: <a href="https://3dprint.com/wp-content/uploads/2016/11/iris.jpg" rel="nofollow">https://3dprint.com/wp-content/uploads/2016/11/iris.jpg</a>