川大教授發明看臉神器 看錶情可測聽課專注程度
A professor at Sichuan University has introduced a facial recognition system to monitor students in his class.
四川大學一名教授近日研發出了一套臉部識別系統，用於監控學生的上課狀態。The system, invented by Professor Wei Xiaoyong of the university's computer science department, has been deemed a "magic device" by Wei's students.
這套系統是由計算機科學學院的魏驍勇教授研發的，被魏教授的學生成爲“魔法機器”。Among other things, it is able to analyze the effect of Wei's teaching.
除此之外，這套系統還能夠分析魏教授的教學效果。
In Wei's lab, a reporter got to examine the system at work, observing a video in which every student's face was marked with a yellow box.
在魏教授的實驗室裏，有一個記錄員必須檢查系統的運作，觀察每一個學生的臉都被黃色的方框標出來的視頻。Each box was labeled as "happy" or "neutral," classifying the students' overall feelings.
每個方框都標示着“開心”或者“一般”，將學生的心情進行分類。
Based on facial expressions, Wei is able to know when students are the most active, and when they need more interaction to stay engaged.
基於面部表情，魏驍勇能夠從中知道學生什麼時候最活躍，什麼時候需要多一點互動來集中注意力。Long-term monitoring of 324 students revealed that academic performance may be proportional to the level of students' activity in class.
對324名學生的長期監控調查表明，學生的學業成績可能是與學生上課的參與度呈正相關的。"The facial expressions tell me which teaching methods are most easily understood and accepted," Wei confirmed.
魏教授證實：“這些面部表情告訴我什麼樣的教學方式纔是最易於理解，最爲學生接受的。”The system has also been used to study relationships between students.
這套系統也被用來研究學生之間的人際關係。By recording the students' interactions with others, the system tells Wei whether an individual pupil is an introvert or an extrovert.
通過記錄學生彼此間的互動，系統能告訴魏教授某個學生是性格內向還是外向。"In the future, expressions will be divided into more categories, which will allow us to do more analysis," Wei said.
魏教授說：“以後，面部表情將會被進行更多分類，會讓我們有機會進行更多分析。”In addition to maximizing the efficacy of teaching, the system can be employed in many other fields.
除了將教學效果最大化，這套系統也可以被投用到許多別的領域。"For example, a camera installed in front of an advertisement can analyze the effect of the advertisement by capturing the expressions of the public," Wei offered.
魏教授補充道：“比如說，在廣告牌前安裝攝像頭可以通過抓取大衆的面部表情來分析該廣告的效用。”
