一種基于會聚雙目立體視覺的用戶化身模型
A user avatar model based-on convergent binocular stereo vision
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摘要: 在簡單會聚式雙目立體視覺模型的基礎(chǔ)上,提出了具有9自由度的用戶化身視覺模型用于虛擬場景的成像變換,導(dǎo)出了用虛擬場景點的世界坐標(biāo)和用戶化身視覺模型的9自由度變量表示的左、右雙目虛擬攝像機的成像公式,求出了9自由度用戶化身視覺模型的左、右雙目成像的視差與場景點深度信息的關(guān)系及相應(yīng)的計算公式。仿真實驗結(jié)果表明了該模型的可行性和計算方法的可靠性,同時表明該模型比簡單會聚式雙目立體視覺模型更接近人的視覺習(xí)慣,因此更具有實用性。
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關(guān)鍵詞:
- 虛擬現(xiàn)實; 虛擬場景; 用戶化身; 立體視覺; 視差; 深度信息
Abstract: A vision model of user avatar with nine freedoms based-on simple convergent binoc-ular stereo vision is proposed and used to imaging and transformation in virtual scene. The formulas of imaging in left and right virtual camera about the virtual scene points are educed with its world coordinate values and the nine freedoms variables of the user avatar vision model. The equations are deduced about the relationship between the parallax of the imaging points in left and right images about the scene point projected by virtual binocular camera and depth in-formation of the scene point relative to the original points of the observation coordinate system. The results of the simulation experiment prove the feasibility of the model and the reliability of the algorithmic method in this paper. Simultaneously, it is proved that the vision model of user avatar with nine freedoms is more effective, more practical and more vicinal to human beings visional habit. -
汪成為,靈境技術(shù)與人機和諧仿真環(huán)境,計算機研究與發(fā)展,1997,34(1),1-12.[2]汪成為,高文,王行仁,靈境(虛擬現(xiàn)實)技術(shù)的理論、實現(xiàn)及應(yīng)用,北京,清華大學(xué)出版社,1996.[3]M.S.Lew,T.S.Huang,K.Wong,Learning and feature selectionin stereo matching,IEEE Trans.on PAMI,1994,PAMI-16(9),869-888.[4]章毓晉,圖像工程下冊,圖像理解與計算機視覺,北京,清華大學(xué)出版社,2000,39-47.[5]李自力,朱光喜,朱耀庭,張小敏,基于真實環(huán)境圖像的三維動態(tài)仿真系統(tǒng)研究,中國圖像圖形學(xué)報,2000,12(5A), -
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