Hybrid-resolution encoding and decoding method and a video apparatus using the same

A hybrid-resolution decoding apparatus comprising:

• one or more processors;
• memory;
• an
• a plurality of program modules stored in the memory and to be executed by the one or more processors, the plurality of program modules further including:
• a code stream receiving module, configured to receive a video code stream;
• an I frame decoding module, configured to perform full-resolution standard decoding on an I frame that adopts only intra-frame coding in the video code stream;
• a down-sampling module, configured to perform down-sampling on the full-resolution standard decoded I frame to obtain a sampling image of the I frame;
• a non-I frame decoding module, configured to perform standard decoding on a non-I frame in the video code stream by using the sampling image of the I frame that corresponds to the non-I frame as a reference frame, wherein the standard decoding performed on the non-I frame is different from the full-resolution standard decoding performed on the I frame;
• and
• a super-resolution recovery module, configured to perform super-resolution image recovery on the standard decoded non-I frame to obtain an original-resolution non-I frame image, wherein the super-resolution recovery module comprises:
• a data obtaining unit, configured to obtain a motion vector and residual data of an inter-frame coded macroblock in the standard decoded non-I frame;
• and
• an inter-frame coding recovery unit, configured to:
• in accordance with a determination, based on the motion vector and the residual data, that an accuracy of motion estimation of the macroblock does not satisfy first accuracy criteria, perform the super-resolution image recovery on the inter-frame coded macroblock using spatial interpolation filtering;
• and,
• in accordance with a determination, based on the motion vector and the residual data, that the accuracy of motion estimation of the macroblock satisfies the first accuracy criteria:
• in accordance with a determination, based on the motion vector and the residual data, that accuracy of motion estimation satisfies second accuracy criteria associated with a movement level of the macroblock, perform the super-resolution image recovery on the inter-frame coded macroblock using temporal interpolation filtering;
• and,
• in accordance with a determination, based on the motion vector and the residual data, that the accuracy of motion estimation does not satisfy the second accuracy criteria associated with the movement level of the macroblock:
• in accordance with a determination, based on the motion vector and the residual data, that the accuracy of motion estimation satisfies third accuracy criteria associated with the movement level of the macroblock, perform the super-resolution image recovery on the inter-frame coded macroblock using combined temporal and spatial interpolation filtering;
• and
• in accordance with a determination, based on the motion vector and the residual data, that the accuracy of motion estimation does not satisfy the third accuracy criteria associated with the movement level of the macroblock, perform the super-resolution image recovery on the inter-frame coded macroblock using spatial interpolation filtering.