Matlab based implementation of the Middlebury's frame interpolation function the original paper is "A Database and Evaluation Methodology for Optical Flow" could be found @http://vision.middlebury.edu/flow/floweval-ijcv2011.pdf
check demo.m for example usage of the interpolation function
Intermediate result from the demo example:
Original flow:
Forward warping flow:
Interpolated flow:
Interpolated image:
Ground truth image: