This paper presents an study on the interior orientation techniques in computer vision , and proposes a collimation mark recognition algorithm which applies to practicality images on barycenter of symmetrical figure 介紹了對(duì)計(jì)算機(jī)視覺中數(shù)字影像的內(nèi)定向技術(shù)的進(jìn)一步研究,對(duì)現(xiàn)有框標(biāo)識(shí)別方法進(jìn)行了改進(jìn),提出了基于對(duì)稱圖形重心的框標(biāo)自動(dòng)識(shí)別方法