In communication technology, POC(PTT Over Cellular) refers to push-to-talk function, also known as PTT(Push To Talk), while in image technology, POC (Picture Sequence Counting) refers to image sequence number. In addition, in the field of medical equipment, POC(point-of-care) refers to immediate bedside detection.
Extended data
In H.264, picture sequence number (POC) is mainly used to identify the playing order of pictures, and also used to mark the initial picture sequence number of reference pictures when decoding inter-frame prediction slices, indicating the difference of picture sequence numbers between frames or fields in the following situations: when using motion vector calculation of temporal direct prediction mode; When using natural mode weighted prediction in b film; When checking the consistency of the decoder.
POC test is a popular confirmatory test for customers' specific applications in the industry. According to users' performance requirements and expansion requirements, it runs real data on the selected server, actually calculates users' data volume and running time, and increases the data volume according to users' future business expansion requirements to verify the carrying capacity and performance changes of the system and platform.
Baidu encyclopedia -POC test
Baidu encyclopedia -PoC