Video frame fade-in/fade-out detection method and apparatus

An apparatus, comprising:

• a processor;
• and
• a non-transitory computer-readable storage medium storing a program to be executed by the processor, the program including instructions for:
• acquiring pixel luminance information within a preset area of a current video frame;
• calculating, according to the acquired pixel luminance information within the preset area of the current video frame, a respective direct current component of each of a plurality of unit pixel blocks located within the preset area of the current video frame, to acquire a respective block direct current component of each of the plurality of unit pixel blocks;
• acquiring pixel luminance information of a plurality of reference pixel blocks, wherein the plurality of reference pixel blocks are comprised in a reference frame corresponding to the current video frame, and wherein each reference pixel block of the plurality of reference pixel blocks corresponds to a unit pixel block of the plurality of unit pixel blocks;
• calculating a respective block direct current component of each reference pixel block of the plurality of reference pixel blocks according to the pixel luminance information of the plurality of reference pixel blocks;
• separately for each unit pixel block of the plurality of unit pixel blocks, comparing the respective block direct current component of the respective unit pixel block with the respective direct current component of the respective reference pixel block in the reference frame that corresponds to the respective unit pixel block;
• collecting statistics on a plurality of comparison results of comparing the respective block direct current component of each unit pixel block with the respective direct current component of the respective reference pixel block that corresponds to the respective unit pixel block, and determine, according to a statistics collection result, whether fade-in/fade-out exists;
• and
• marking, in response to detecting that fade-in/fade-out exists, a current to-be-processed object, so that motion match is performed by using a weighted prediction mode.

A method, comprising:

• acquiring pixel luminance information within a preset area of a current video frame;
• calculating, according to the acquired pixel luminance information, a respective direct current component of each of a plurality of unit pixel blocks located within the preset area of the current video frame, to acquire the respective block direct current component of each of the plurality of unit pixel blocks;
• acquiring pixel luminance information of a plurality of reference pixel blocks, in a reference frame corresponding to the current video frame, wherein each reference pixel block of the plurality of reference pixel blocks corresponds to a unit pixel block of the plurality of unit pixel blocks;
• calculating a respective block direct current component of each of the plurality of reference pixel blocks according to the pixel luminance information of the plurality of reference pixel blocks;
• separately for each unit pixel block of the plurality of unit pixel blocks, comparing the respective block direct current component of the respective unit pixel block with the respective direct current component of the respective reference pixel block in the respective reference frame that corresponds to the respective unit pixel block;
• collecting statistics on a plurality of comparison results of comparing the respective block direct current component of each unit pixel block of the plurality of unit pixel blocks with the respective direct current component of the respective reference pixel block of the plurality of reference pixel blocks that corresponds to the respective unit pixel block, and determining, according to a statistics collection result, whether fade-in/fade-out exists;
• marking, when it is detected that fade-in/fade-out exists, a current to-be-processed object, so that motion match is performed using a weighted prediction mode;
• and
• displaying, on a display screen, a plurality of video frames according to the motion match.