例句與造句

1. Based on projective geometry , the research works about 3d invariance ' s extraction and application have been done in this thesis as following : ( 1 ) the basic theories and concepts in projective geometry are systematically summarized . it includes : the camera models of perspective imaging , projective collineation , cross ratio , a simple compare about invariance ( invariant ) among some geometry transformations , fundamental matrix , epipolar and epipolar line in epipolar geometry , and so on . ( 2 ) the calculation methods for 2d projective transformation are extended from points to multi - element , which includes points , lines , points lines and so on , to get the relationship between two projective planes
   基于射影幾何理論，論文圍繞3d不變特征的提取和應(yīng)用進(jìn)行了如下的研究工作： ( 1 )系統(tǒng)總結(jié)了射影幾何中的若干基礎(chǔ)概念，包括：透視成像的相機(jī)模型、射影對(duì)應(yīng)、交比不變量、基于不同幾何變換下的不變量的簡單對(duì)比、對(duì)極幾何中的基礎(chǔ)矩陣、對(duì)極點(diǎn)、對(duì)極線等。
2. It's difficult to find projective collineation in a sentence. 用projective collineation造句挺難的