發(fā)布時(shí)間：2018-10-05 16:45

【摘要】：針對(duì)魚(yú)眼圖像存在的徑向畸變,提出了一種通過(guò)計(jì)算魚(yú)眼鏡頭徑向畸變函數(shù)來(lái)校正魚(yú)眼圖像的方法。首先,根據(jù)魚(yú)眼鏡頭本身的特性運(yùn)用Hough變換獲取魚(yú)眼圖像的圓心以及校正半徑;運(yùn)用所提出的圓柱形棋盤格模版來(lái)完成徑向畸變的標(biāo)定,通過(guò)多項(xiàng)式擬合出魚(yú)眼圖像直徑上采樣點(diǎn)到圓心的距離和實(shí)際該采樣點(diǎn)像點(diǎn)對(duì)應(yīng)的物點(diǎn)所在視角之間的關(guān)系,從而將魚(yú)眼圖像恢復(fù)到球形投影面上;最后運(yùn)用平面投影模型矯正出符合人類視覺(jué)感官的平面透視圖像,并用一個(gè)圓柱形的投影面校正出了360°全景圖。最后的實(shí)驗(yàn)結(jié)果證明了此方法的有效性。
[Abstract]:Aiming at the radial distortion of the fish-eye image, a method is proposed to correct the fish-eye image by calculating the radial distortion function of the fish-eye lens. First of all, according to the characteristics of the fish-eye lens itself, the center of the fish-eye image and the correction radius are obtained by Hough transform, and the radial distortion is calibrated by using the proposed cylindrical checkerboard template. The relation between the distance from the sampling point to the center of the circle on the fish-eye image diameter and the angle of view of the object point corresponding to the actual image point is fitted by polynomial, so that the fish-eye image can be restored to the spherical projection plane. Finally, the plane perspective image which accords with the human visual sense is corrected by the plane projection model, and the 360 擄panorama is corrected by a cylindrical projection plane. The experimental results show the effectiveness of the method.
【作者單位】： 北京信息科技大學(xué)自動(dòng)化學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(11672044,11172047)項(xiàng)目資助
【分類號(hào)】：TB851;TP391.41

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