The following example draws a rectangle with no transformation and a path with a rotation transformation 下面的示例繪制了一個(gè)沒(méi)有變換的矩形以及一個(gè)有旋轉(zhuǎn)變換的路徑。
Then two kinds of features ate extracted which are invariant to translation , scaling and rotation transformations 基于這兩類(lèi)特征,導(dǎo)出了兩級(jí)遞推識(shí)別方法,實(shí)驗(yàn)驗(yàn)證了方法的有效性。
Corner detection based on accumulative chord length is invariant to rotation transformations , while the implicitly refining strategy of digital curves can improve computational precision and enhance the reliability of corner detection significantly 摘要提出基于曲線累加弦長(zhǎng)來(lái)檢測(cè)角點(diǎn),可以使得檢測(cè)結(jié)果具有旋轉(zhuǎn)不變性,隱式精化曲線策略可以顯著改善角點(diǎn)檢測(cè)算法的計(jì)算精度,從而增強(qiáng)角點(diǎn)檢測(cè)結(jié)果的可靠性。
In the image recognition system of an optical - electrical hybrid joint transform correlator , the same object and the false object comparing with reference image could be well recognized , but the distorted image of the scale and rotation transformation was difficultly recognized and even could not be recognized 摘要在光電混合聯(lián)合變換相關(guān)器圖像識(shí)別系統(tǒng)中,對(duì)與參考圖像完全相同的真目標(biāo)圖像和不同的假目標(biāo)圖像能實(shí)現(xiàn)完全識(shí)別,但對(duì)于與參考圖像間存在旋轉(zhuǎn)和比例變化的目標(biāo)圖像卻很難識(shí)別,甚至無(wú)法識(shí)別。
Taking the meshing theory of conjugate curved surface as a foundation , utilizing array method of rotation transformation of vector , the meshing equation and contour surface equation of conical cam mechanism with swinging conical roller follower were analyzed and derived , and the calculation formula of pressure angle and synthetic curvature of the mechanism was presented , thus laid a solid theoretical foundation for enhancing the machining accuracy of conical cam , improving its processing method and achieved the integration of cam cad / cam 摘要以共軛曲面嚙合理論為基礎(chǔ),運(yùn)用矢量的旋轉(zhuǎn)變換矩陣法,分析并推導(dǎo)了圓錐滾子擺動(dòng)從動(dòng)件圓錐凸輪機(jī)構(gòu)的嚙合方程和廓面方程,并給出了機(jī)構(gòu)的壓力角和綜合曲率的計(jì)算公式,為圓錐凸輪加工精度的提高,改進(jìn)其加工方法,實(shí)現(xiàn)凸輪cad / cam一體化奠定了堅(jiān)實(shí)的理論基礎(chǔ)。