useful adj. 1.有用的,有益的,有效的,有幫助的。 2.〔俚語〕值得稱贊的,精通…的 (at)。 make oneself generally useful 事事有用,事事幫得來忙 (He must make himself generally useful. 他可事事都干得來)。 a pretty useful performance 相當(dāng)精采的演出。 His wife is very useful at cooking. 他的妻子很會做菜。 adv. -ly ,-ness n.
Texture analysis is a main and useful area of study in pattern recognition 紋理分析是模式識別中一個重要的分支。
There are very few books that try to cover the basics of a lot of useful areas 真正包含了一些基本的有用的東西的書少而又少。
In this system , the movement of the step - electromotor is controlled by computer , and then the dial pointer is drove by the step - electromotor . at the same time , these images of the analog instrument are took by high precision ccd video , and then these images will be processed by the computer , using some image - processing algorithms such as image segmentations , threshold identification , image binarization , areas labeling , dial center - point identification , useful areas identification & abstracting , and areas thinning , etc . followed this , the dial pointer of the “ circle ” is able to be located . at last , the dial pointer position will be recognized by the computer 本系統(tǒng)由計算機控制步進(jìn)電動機的運動,進(jìn)而驅(qū)動指針式儀表表針的運動,并且通過高精度ccd攝像機實時獲取表盤圖像數(shù)據(jù),同時進(jìn)行表盤圖像的相關(guān)處理,包括圖像分割,閾值確定,圖像二值化,區(qū)域標(biāo)記算法,圓心擬合,有效區(qū)域識別提取,區(qū)域細(xì)化等,最終快速識別出表盤指針?biāo)幬恢?最后,根據(jù)國家指針式儀表類檢定規(guī)程所制定的算法計算出該儀表的相關(guān)誤差,檢定指針式儀表的各種精度,通過這些數(shù)據(jù)判斷該儀表是否合格,打印該儀表的檢定結(jié)果報表。