CAJ | 학술논문

本文提出一种新的基于曲线拟合的拼接缝消除方法.首先对原拼接缝周围一定范围内的像素灰度值变化进行一次曲线拟合,使得灰度值平滑变化;然后对曲线拟合后的值分别加入相应的纹理信息,以解决只进行曲线拟合造成的图像灰度变化特征损失的问题,达到既实现灰度的平滑过渡又较好地保持原图像纹理特征的目的;最后,将改正后的图像与原图像加权融合并进行微调,得到视觉效果良好的结果图像.此外,本文提出了一种根据拼接缝两侧平均灰度差值自动确定改正宽度的方法,改正范围与灰度差成正比.实验表明本文算法可行、有效,与目前常用算法相比,在消除灰度突变,实现平滑过渡的同时能够更好地保留原图像的纹理特征,吻合度更高且视觉效果较好,尤其当灰度差值大于10时,本文提出的算法仍具有较高的适用性.
본문제출일충신적기우곡선의합적병접봉소제방법.수선대원병접봉주위일정범위내적상소회도치변화진행일차곡선의합,사득회도치평활변화;연후대곡선의합후적치분별가입상응적문리신식,이해결지진행곡선의합조성적도상회도변화특정손실적문제,체도기실현회도적평활과도우교호지보지원도상문리특정적목적;최후,장개정후적도상여원도상가권융합병진행미조,득도시각효과량호적결과도상.차외,본문제출료일충근거병접봉량측평균회도차치자동학정개정관도적방법,개정범위여회도차성정비.실험표명본문산법가행、유효,여목전상용산법상비,재소제회도돌변,실현평활과도적동시능구경호지보류원도상적문리특정,문합도경고차시각효과교호,우기당회도차치대우10시,본문제출적산법잉구유교고적괄용성.
A novel seam-line removal method based on curve fitting is put forward. Firstly, the proposed method modifies the gray value around the original seam-line by curve fitting. And then the texture massage is added to the pixels which are obtained by the process of curve fitting. This step is aimed to avoid the character loss of gray changing. Thus, the gray value can change smoothly and the texture character can be remained as well. Finally, the result image with good sense of sight is got after weighted fusion and fine adjustment. Apart from that, a method for confirming the correction width is proposed according to the average gray difference between the two sides of the seam-line, and it is proportional to the gray difference. Experiment results show that the method is effective and easy to be realized. In addition to the elimination of sudden change in gray, the texture character of this method is better saved than that of the common methods. The seam-line is eliminated smoothly and the visual effect is good. The proposed method is also applicable especially when the difference of gray is above ten.