Method for performing frame interpolation based on single-directional motion and associated non-transitory machine-readable medium

A non-transitory machine-readable medium for storing a program code, wherein when loaded and executed by a processor, the program code instructs the processor to execute:

• a frame interpolation module, arranged to generate a third image frame interpolated between a first image frame and a second image frame, and comprising:
• a motion estimating module, arranged to perform motion estimation upon a first input image frame and a second input image frame, to obtain a single-directional motion, wherein the first input image frame is derived from the first image frame, and the second input image frame is derived from the second image frame;
• a scaling module, arranged to scale the single-directional motion according to a time point of the third image frame, to generate a scaled motion;
• a first processing module, arranged to derive a forward-warped result from a result of performing a forward warping operation and a first inverse operation upon the scaled motion;
• an inverse module, arranged to perform a second inverse operation upon the forward-warped result, to generate an inversed result;
• and
• a second processing module, arranged to generate the third image frame according to the first image frame, the second image frame, the forward-warped result, and the inversed result.