Method for selecting reference frame, electronic device, and storage medium

A non-transitory computer-readable storage medium having stored therein a computer program that, when executed by a processor, causes the processor to perform a method for selecting a reference frame, the method being for frame interpolation processing on frame rate conversion FRC and comprising:

• calculating a sum of absolute values of pixel brightness differences of corresponding pixel locations in a current frame and a previous frame in a video;
• determining frame attribute of the current frame based on the sum of absolute values of pixel brightness differences, the frame attribute comprising a raw frame and a duplicate frame;
• counting a number of raw frames in M historical frames previous to the current frame;
• obtaining a current frame interpolation step size based on the number of raw frames in the M historical frames;
• obtaining a next frame phase to be interpolated based on a current frame interpolation phase and the current frame interpolation step size;
• and
• determining an interpolation reference frame based on the next frame to be interpolated.

An electronic device, comprising:

• a processor;
• a memory and a display, communicatively coupled to the processor, wherein:
• the memory is configured to store a computer program executable by the processor, and the processor is configured to perform a method for selecting a reference frame, and process a video stream based on the selected reference frame, and control the display to display video images after processing, in which the method for frame interpolation processing on frame rate conversion FRC and comprising:
• calculating a sum of absolute values of pixel brightness differences of corresponding pixel locations in a current frame and a previous frame in a video;
• determining frame attribute of the current frame based on the sum of absolute values of pixel brightness differences, the frame attribute comprising a raw frame and a duplicate frame;
• counting a number of raw frames in M historical frames previous to the current frame;
• obtaining a current frame interpolation step size based on the number of raw frames in the M historical frames;
• obtaining a next frame phase to be interpolated based on a current frame interpolation phase and the current frame interpolation step size;
• and
• determining an interpolation reference frame based on the next frame to be interpolated.