refining stage 中文意思是什麼
refining stage
解釋
精煉期-
A systematic summary of previous work has been given first. then this paper presents a novel multi - stage face detection algorithm, which makes a good use of human face pattern ' s valuable information in colour image sequences. the difficult detection task has been divided into four steps : the preprocessing, which is to gain skin colored regions with human skin color model ; the roughly detection and face region refining by elliptic curve fitting ; the fine detection with facial features " detection and location ; the face / non - face classification step based on pca and gaussian density estimation technique
本文對彩色序列圖像中的人臉檢測和跟蹤技術進行了深入的研究，其具體內容為：對近年來的研究工作進行了系統的介紹；提出了一個由粗到細的多階段的人臉檢測演算法，該演算法充分利用了序列圖像中人臉模式的各種有用信息，將復雜的檢測工作分為了四個部分：膚色區域分割預處理，人臉粗檢及利用橢圓擬和的人臉區域提煉，應用人臉基本特徵檢測和定位的人臉細檢， pca結合高斯概率密度估計的人臉驗證。 -
Production process : hydrogen supplied from the petroleum refining partially combusts, two - stage converts, generates the elemental sulfur, cools and shapes
生產工藝：由石油煉制氣中的硫化氫，經部分燃燒，二級轉化，生成元素硫，然後再經冷卻，成型生產出來。 -
The result indicated that traditional technology of normal alkali refining can refine the pricklyash seed oil whose acidity under 20, but the method of by stage alkali - refining using dilute - solution can process pricklyash seed oil whose acidity above 60 ~ 70
結果表明，傳統的常規堿煉技術可以對酸值在20以下的花椒籽油進行精煉；而採用稀溶液分步間歇式堿煉則可以處理酸值高達60 ~ 70的花椒籽油。
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