發(fā)布時間：2018-02-25 03:25

  本文關(guān)鍵詞： 交通工程 標(biāo)定方法 相似三角形原理 視覺特性 虛擬圖像 駕駛模擬器　出處：《中國公路學(xué)報》2017年01期 　論文類型：期刊論文

【摘要】：為了提高多通道圖像顯示技術(shù)駕駛模擬器三維虛擬圖像成像的逼真性,針對駕駛模擬器三維虛擬圖像中物體的空間尺寸與駕駛?cè)说囊曈X特性,對駕駛模擬器圖像標(biāo)定方法進(jìn)行了研究。采用相似三角形原理,以幾何相似關(guān)系進(jìn)行數(shù)學(xué)推導(dǎo),得出駕駛模擬器三維虛擬圖像成像理論值。設(shè)計駕駛模擬器三維虛擬圖像標(biāo)定樣板,標(biāo)定樣板以設(shè)定半徑的圓面為核心,圓心設(shè)置為駕駛?cè)穗p眼視點位置,圓弧面上設(shè)置6根直立標(biāo)桿,圓面上設(shè)置3個符合中國國家標(biāo)準(zhǔn)的道路交通標(biāo)志牌,利用駕駛模擬器虛擬成像軟件將標(biāo)定樣板制成三維虛擬圖像并投射到駕駛模擬器投影屏幕上。通過實際測量駕駛模擬器投影屏幕上的標(biāo)桿間距、標(biāo)桿長度、標(biāo)桿底部到地面距離、駕駛?cè)四軌蚩辞褰煌?biāo)志牌的距離,對比分析實際測量數(shù)值與理論值的差異,調(diào)整駕駛模擬器投影視點、投影儀縮放比例、視屏距離等參數(shù)以及駕駛模擬器成像硬件設(shè)備,完成對駕駛模擬器三維虛擬圖像物體空間尺寸的標(biāo)定。研究結(jié)果表明:駕駛模擬器通過該方法標(biāo)定后,駕駛?cè)嗽隈{駛艙中看到的虛擬圖像物體的尺寸大小(水平和垂直方向)與在現(xiàn)實中同樣條件下看到的基本一致,對虛擬圖像的視認(rèn)距離也與現(xiàn)實中的視距基本一致,增加了虛擬場景的真實感和認(rèn)知感。
[Abstract]:In order to improve the lifelike of 3D virtual image imaging of driving simulator, the spatial size of object and the visual characteristics of driver in the 3D virtual image of driving simulator are studied. The image calibration method of driving simulator is studied. The theoretical value of 3D virtual image imaging of driving simulator is obtained. The calibration template of 3D virtual image of driving simulator is designed. The core of calibration template is the circle plane with the radius set, and the center of the driving simulator is set as the viewpoint position of the driver's eyes. Six vertical poles were set on the arc surface and three road traffic signs conforming to the Chinese national standards were set on the circular surface. Using the virtual imaging software of driving simulator, the calibration template is made into 3D virtual image and projected onto the projection screen of driving simulator. The distance and length of benchmarking on the projection screen of driving simulator are measured. The distance from the bottom of the benchmark to the ground, the driver can see clearly the distance of the traffic sign, compare and analyze the difference between the actual measurement value and the theoretical value, adjust the projection viewpoint of the driving simulator, and scale the projector. The parameters such as screen distance and the imaging hardware of driving simulator are used to calibrate the spatial size of 3D virtual image of driving simulator. The results show that the driving simulator is calibrated by this method. The size (horizontal and vertical) of the virtual image object seen by the driver in the cockpit is basically the same as that seen under the same conditions in reality, and the visual recognition distance of the virtual image is basically the same as the visual distance in reality. It increases the sense of reality and cognition of the virtual scene.
【作者單位】： 昆明理工大學(xué)交通工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(71261012)
【分類號】：U491

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本文編號：1532844