發(fā)布時間：2018-02-03 06:38

  本文關(guān)鍵詞： 移動增強現(xiàn)實 全景圖 精確標(biāo)注 用戶體驗　出處：《北京理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來，隨著科技的飛速發(fā)展，高性能的移動終端為增強現(xiàn)實在移動領(lǐng)域的實現(xiàn)提供了有利條件。然而，現(xiàn)有的移動增強現(xiàn)實瀏覽器不夠完善，，在一些方面仍有待改進(jìn)。例如，目前大多數(shù)瀏覽器都是基于GPS和傳感器數(shù)據(jù)進(jìn)行POI的標(biāo)注，標(biāo)注方式精度較低；局限于移動設(shè)備的視場角，用戶需手持設(shè)備，旋轉(zhuǎn)以獲取不同方向的POI數(shù)據(jù)，用戶體驗欠佳；現(xiàn)有的交互方式較為單一，以簽到、分享地點為主，用戶參與度不高。針對目前移動增強現(xiàn)實瀏覽器的不足之處，本文就以下方面開展了研究： （1）針對增強現(xiàn)實標(biāo)簽疊加不準(zhǔn)確的問題，提出一種基于全景圖的POI標(biāo)注方式，利用傳感器數(shù)據(jù)與模板匹配算法對POI進(jìn)行多重定位。首先，建立全景圖像素坐標(biāo)系與世界地理坐標(biāo)系的映射關(guān)系，以GPS和傳感器數(shù)據(jù)計算當(dāng)前地點與POI的方位角，將POI映射至全景圖中。在實現(xiàn)了POI粗定位的基礎(chǔ)上，以模板匹配算法進(jìn)一步定位POI在全景圖中的最佳匹配位置，實現(xiàn)像素級精確標(biāo)注。同時，提出一種基于方位角減少模板匹配范圍的方法，進(jìn)一步提高POI標(biāo)注的效率。實驗證明，結(jié)合了傳感器數(shù)據(jù)與模板匹配算法的POI標(biāo)注方法，能有效提高POI的標(biāo)注精度，改善標(biāo)簽疊加不準(zhǔn)確的現(xiàn)象。 （2）提出兩種方式改進(jìn)用戶體驗。首先，針對移動設(shè)備視場角窄小、用戶需長時間手持設(shè)備的問題，提出一種基于全景圖的POI離線瀏覽模式。通過左右滑動全景瀏覽已標(biāo)注好的周圍所有的POI，克服視場角窄小的缺陷。第二，針對交互方式單一的問題，設(shè)計了一種由用戶補充添加自定義POI信息的交互模式。前一個用戶可在圈出自自己感興趣的區(qū)域作為自定義POI模板，并上傳至云端服務(wù)器，作為后續(xù)使用者的模板圖像，從而實現(xiàn)自定義標(biāo)注信息的多人共享。在實際使用中，以上兩種方式均能有效改善用戶對增強現(xiàn)實瀏覽器的使用感，提高用戶參與度。 （3）基于以上研究工作，設(shè)計了一種基于全景圖的增強現(xiàn)實的精確標(biāo)注瀏覽器，在Android平臺實現(xiàn)全景圖拼接、POI標(biāo)注、用戶自定義添加POI、網(wǎng)絡(luò)交互等功能。在實現(xiàn)基本功能的同時，針對移動端特性對圖像拼接與模板匹配算法進(jìn)行了優(yōu)化。用戶測試結(jié)果表明，本系統(tǒng)達(dá)到預(yù)期設(shè)計目標(biāo)，實現(xiàn)了一個用戶體驗良好的移動增強現(xiàn)實瀏覽器。
[Abstract]:In recent years, with the rapid development of science and technology, high-performance mobile terminals provide a favorable condition for the realization of augmented reality in the mobile field. However, the existing mobile augmented reality browsers are not perfect. For example, most browsers are based on GPS and sensor data to annotate POI. Limited to the field of view of mobile devices, users need handheld devices to rotate to obtain different directions of POI data, the user experience is poor; The existing interaction mode is relatively single, mainly to sign in, share the place, the user participation is not high. In view of the shortcomings of the current mobile augmented reality browser, this paper has carried out research on the following aspects: 1) aiming at the problem of inaccurate label superposition of augmented reality, a panorama based POI tagging method is proposed, which uses sensor data and template matching algorithm to locate POI multiple times. The mapping relationship between the panoramic pixel coordinate system and the world geographical coordinate system is established, and the azimuth between the current location and the POI is calculated by using the GPS and sensor data. The POI is mapped to the panoramic image. On the basis of realizing the POI rough location, the template matching algorithm is used to locate the best matching position of POI in the panoramic image, and the pixel level accurate annotation is realized at the same time. A method based on azimuth to reduce the range of template matching is proposed to further improve the efficiency of POI tagging. Experimental results show that the POI tagging method combines sensor data with template matching algorithm. It can effectively improve the labeling accuracy of POI and the phenomenon of label superposition inaccuracy. Firstly, aiming at the narrow angle of view field of mobile device, the user needs a long time handheld device. This paper presents a POI offline browsing mode based on panoramic images. By using left and right sliding panorama to browse all the labeled POIs, the defect of narrow angle of view is overcome. Secondly, the problem of single interaction mode is addressed. An interactive mode of adding custom POI information to users is designed. The former user can be used as a custom POI template in the area of interest and upload to the cloud server. As a follow-up user of the template image, so as to achieve the customized annotation information sharing. In actual use, the above two methods can effectively improve the user's sense of use of augmented reality browser. Increase user participation. 3) based on the above research work, a panoramic augmented reality (AR) accurate annotation browser is designed, and the panoramic image splicing and POI tagging is realized on Android platform. User custom add POI, network interaction and other functions. In order to achieve the basic functions, the image stitching and template matching algorithm is optimized according to the characteristics of the mobile side. The user test results show that. The system achieves the desired design goal and realizes a mobile augmented reality browser with good user experience.
【學(xué)位授予單位】：北京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TP391.41;TP393.092

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