發(fā)布時間：2018-06-16 18:04

  本文選題：個性化虛擬手 + 一體化平臺　； 參考：《浙江大學(xué)》2017年碩士論文

【摘要】：虛擬現(xiàn)實技術(shù)旨在高度模擬現(xiàn)實世界環(huán)境,讓用戶與虛擬環(huán)境交互,給人身臨其境的感覺,它的兩個重要特征是交互性和沉浸感。而手作為人與虛擬現(xiàn)實環(huán)境交互時的重要工具,逼真的手模型會讓用戶得到更加真實的體驗。建立逼真的手模型面臨許多挑戰(zhàn):自然環(huán)境下的很多因素會干擾人手圖像采集,復(fù)雜背景導(dǎo)致人手與背景難以分離,光照環(huán)境影響人手的清晰度,人手的抖動會使人手圖像模糊,軟件環(huán)境需要過多的手動干預(yù)使建模周期長,效率低。本文開發(fā)了一體化的軟硬件平臺,使人手建模更加方便、快捷,建立的手模型更加真實。在硬件方面,設(shè)計并實現(xiàn)了人手多視圖影像同步采集裝置,該裝置在考慮了人手生理特征的基礎(chǔ)上,依據(jù)相機立體視錐、光照明模型、人手運動約束等原理進行了詳細(xì)設(shè)計。使用我們的裝置能減少人手圖像采集過程中產(chǎn)生的環(huán)境噪音和運動噪音,提高采集到的圖像質(zhì)量。在軟件方面,設(shè)計了面向用戶的軟件操作界面和高效實用的軟件操作流程,使建模更加高效。根據(jù)計算機視覺中的多視圖幾何的原理,可以從人手的多視圖影像中獲取到三維信息,獲取的信息分三類:反映人手大小、方位的點特征,反映人手輪廓的線特征,反映人手起伏的面特征。把人手模板模型按照點、線、面三種特征進行變形,獲得大小、形狀與真實手基本一致的手模型,最后將圖片中真實手的紋理映射到虛擬手模型上,得到與用戶手高度一致的逼真的手模型。將本文建立手模型的方法與三維激光掃描技術(shù)以及飛行時間技術(shù)建立的手模型進行比較發(fā)現(xiàn):在操作上,本文的方法比后兩者方便很多,在結(jié)果上比飛行時間技術(shù)建立的模型更具有真實感,同時本文用到的設(shè)備價格比三維掃描儀要便宜很多。
[Abstract]:Virtual reality technology aims to highly simulate the real world environment, make users interact with virtual environment, and give people a sense of reality. The two important characteristics of virtual reality technology are interactivity and immersion. Hand is an important tool for the interaction between human and virtual reality environment. The realistic hand model will make the user get more real experience. There are many challenges in creating realistic hand models: many factors in the natural environment interfere with human hand image collection, complex background makes it difficult to separate the hand from background, and illumination affects the clarity of the hand. The hand jitter will blur the hand image, and the software environment needs too much manual intervention to make the modeling cycle long and inefficient. In this paper, an integrated software and hardware platform is developed, which makes manual modeling more convenient, faster and more realistic. In the aspect of hardware, we design and implement the synchronous acquisition device of human multi-view image. Based on the physiological characteristics of human hand, the device is designed in detail according to the principles of camera stereoscopic cone, light illumination model, manual motion constraint and so on. The use of our device can reduce the environmental noise and motion noise generated in the process of manual image acquisition and improve the image quality. In the software aspect, the user oriented software operation interface and the efficient and practical software operation flow are designed to make the modeling more efficient. According to the principle of multi-view geometry in computer vision, 3D information can be obtained from multi-view images of human hands. The information obtained can be divided into three categories: points that reflect the size and orientation of the hands, line features of the contour of the hands. Reflects the face characteristics of the human hand undulation. The manual template model is deformed according to three features: point, line and surface, and the hand model with the same size and shape as the real hand is obtained. Finally, the texture of the real hand in the picture is mapped to the virtual hand model. A realistic hand model is obtained, which is highly consistent with the user's hand. Compared with the 3D laser scanning technique and the flying time technique, the method of establishing hand model in this paper is much more convenient than that of the latter. The result is more realistic than the model built by time of flight technology, and the price of the equipment used in this paper is much cheaper than that of 3D scanner.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP391.9

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本文編號：2027627