APPARATUS FOR MONITORING VIDEO QUALITY AND METHOD THEREOF

摘要

PURPOSE: A video quality measuring device and a method thereof can produce a structure similarity index which is an objective image quality-measuring index, thereby reflecting a subject element based on user's recognition. CONSTITUTION: A structure similarity estimating unit (100) collects frame information. A structure similarity index unit produces a structure similarity index indicating structural similarity between original frames of a damaged frame. A user authentication quality presumption unit (200) applies a weighted value reflecting a subjective element on the structure similarity index to produce a video defect index. A performance index gathering unit (110) collects frame information and produces an error linkage tree based on a type of a frame in which a slice is included. A structure analysis unit (120) selects a reference slice which a slice refers to based on the error linkage tree to produce a structure similarity index. [Reference numerals] (110) Performance index gathering unit; (120) Structure analysis unit; (211) Louma adjustment filter unit; (212) Frame complexity filter unit; (213) Scene switch filter unit; (220) Index conversion unit; (AA) Frame information; (BB) Error relation tree; (CC) Louma weighted value; (DD,EE) Structure similarity index; (FF) Video defect index