Multi-frame quality enhancement method and device for lossy compressed video

An apparatus for multi-frame enhancement for lossily compressed video, comprising:

• a memory, and
• a processor communicably coupled to the memory, the processor to:
• perform quality enhancement on a current frame of a lossily compressed video stream using a plurality of frames of the lossily compressed video stream that are correlated with the current frame for playback of the current frame with enhanced quality, wherein the number of the same pixels or corresponding pixels of each of the plurality of frames and the current frame is greater than a preset threshold, and wherein, to perform quality enhancement on the current frame using the plurality of frames correlated with the current frame of the lossily compressed video stream, the processor is further to:
• identify peak quality frames and non-peak-quality frames in the lossily compressed video stream;
• determine that the current frame is a non-peak-quality frame, and
• perform quality enhancement on the current frame using a first peak quality frame Fp1 and a second peak quality frame Fp2 of the peak quality frames, wherein the first peak quality frame Fp1 is a previous frame of the current frame, and wherein the second peak quality frame Fp2 is a subsequent frame of the current frame.

A non-transitory computer storage medium storing a computer program, wherein the program, when executed by a processor, cause the processor to:

• perform quality enhancement on a current frame of a lossily compressed video stream using a plurality of frames of the lossily compressed video stream that are correlated with the current frame for playback of the current frame with enhanced quality, wherein the number of the same pixels or corresponding pixels of each of the plurality of frames and the current frame is greater than a preset threshold, and wherein, to perform quality enhancement on the current frame using the plurality of frames correlated with the current frame of the lossily compressed video stream, the processor is further to:
• identify peak quality frames and non-peak-quality frames in the lossily compressed video stream;
• determine that the current frame is a non-peak-quality frame, and
• perform quality enhancement on the current frame using a first peak quality frame Fp1 and a second peak quality frame Fp2 of the peak quality frames, wherein the first peak quality frame Fp1 is a previous frame of the current frame, and wherein the second peak quality frame Fp2 is a subsequent frame of the current frame.