Congratulations, Deeplab 3+ finally discovered that the U-net architecture, first proposed 3 years ago, is more efficient than the flat architecture they used b

Congratulations, Deeplab 3+ finally discovered that the U-net architecture, first proposed 3 years ago, is more efficient than the flat architecture they used before. Deeplab 3+ is still a wildly inefficient network structure, but it undeniably works, if you can afford the computational resources. Just keep in mind you can achieve similar results (within 1% mIOU) with much leaner structures.