發(fā)布時(shí)間：2018-08-11 16:02

【摘要】： 本文設(shè)計(jì)并實(shí)現(xiàn)了一個(gè)應(yīng)用在足球比賽直播中的虛擬電視廣告系統(tǒng)。該系統(tǒng)能夠在足球比賽圖像中的特定位置安插虛擬廣告。首先利用Hough變換和數(shù)學(xué)形態(tài)學(xué)方法提取直線,求直線的交點(diǎn)作為特征點(diǎn)。然后用提取到的特征點(diǎn)和它們對(duì)應(yīng)的世界坐標(biāo)對(duì)攝像機(jī)進(jìn)行標(biāo)定,用最小二乘法求解線性方程組得到透視變換矩陣。最后由透視變換矩陣和特定的廣告安插位置的世界坐標(biāo)計(jì)算出虛擬廣告的圖像坐標(biāo)范圍,對(duì)這個(gè)范圍中的每個(gè)點(diǎn)三維重建,計(jì)算他們的世界坐標(biāo),將每個(gè)點(diǎn)的像素值替換為廣告圖像中對(duì)應(yīng)位置的像素值。實(shí)驗(yàn)結(jié)果表明,本系統(tǒng)能夠較為快速、有效的在足球比賽圖像中的特定位置安插虛擬廣告。
[Abstract]:This paper designs and implements a virtual television advertising system which is used in football match live broadcast. The system can place virtual advertisements in the image of football match. First, the Hough transform and mathematical morphology are used to extract the straight line, and the intersection point of the line is obtained as the feature point. Then the camera is calibrated with the extracted feature points and their corresponding world coordinates, and the perspective transformation matrix is obtained by solving the linear equations by the least square method. Finally, the image coordinate range of the virtual advertisement is calculated from the perspective transformation matrix and the world coordinate of the specific advertisement placement position, and the 3D reconstruction of each point in this range is carried out, and their world coordinates are calculated. Replaces the pixel value of each point with the pixel value of the corresponding position in the advertisement image. The experimental results show that the system can put virtual advertisement in the special position of football match image more quickly and effectively.
【學(xué)位授予單位】：西安電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2008
【分類(lèi)號(hào)】：TN948.4

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 信曉敏;基于姿態(tài)補(bǔ)償?shù)牧Ⅲw視覺(jué)里程計(jì)魯棒運(yùn)動(dòng)估計(jì)[D];山東大學(xué);2012年

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本文編號(hào)：2177476