DGC-Net: Dense Geometric Correspondence Network

Understand

This paper addresses the challenge of dense pixel correspondence estimation between two images.

• This problem is closely related to optical flow estimation task where ConvNets (CNNs) have recently achieved significant progress.
• While optical flow methods produce very accurate results for the small pixel translation and limited appearance variation scenarios, they hardly deal with the strong geometric transformations that we consider in this work.
• In this paper, we propose a coarse-to-fine CNN-based framework that can leverage the advantages of optical flow approaches and extend them to the case of large transformations providing dense and subpixel accurate estimates.