提出了一种基于改进主动轮廓模型的海天线检测算法，检测全景海域图像中的椭圆海天线。通过全分辨率算法获取图像的视觉显著图，提取全景设备区在全景图像中的位置，以消除全景设备区干扰对海天线检测的不良影响。根据全景海天线为椭圆形这一特征，将构造的形状能量约束项加入主动轮廓模型中作为新的能量函数，使活动轮廓线的形状在收敛过程中受到限制，从而成功收敛到全景海天线上。实验结果表明，该算法对不同拍摄条件下的全景图像均适用，检测准确率达到96%，普适性和稳健性良好。

A sea-sky-line detection algorithm based on the improved active contour model is proposed to detect the elliptical sea-sky-line of the panoramic sea image. The visual saliency map of the image is obtained by the full resolution algorithm, and then the position of the panoramic device area in the panoramic image is extracted to eliminate its adverse effect of device area interference on the sea-sky-line detection. According to the characteristic that the panoramic sea-sky-line is elliptical, a shape energy constraint function is constructed and added to the active contour model, so a new energy function is formed. The new energy function limits the shape of the active contour in the convergence process, and the contour shape is converged to the panoramic sea-sky-line successfully. Experimental results show that this algorithm is applicable for panoramic images under different shooting conditions and its detection accuracy reaches 96%. The universality and robustness of the proposed algorithm are excellent.