融合似物性前景对象与背景先验的图像显著性检测

Saliency detection via objectness foreground object and background prior

为了在复杂背景图像中准确地提取出图像的显著区域,提出一种结合似物性前景对象与背景先验知识的图像显著性检测方法(OFOBP)。该方法首先对图像进行超像素分割,计算超像素颜色空间分布,得到初始显著图;利用似物性检测方法获取多个目标窗口,由窗口建立搜索区域,结合二值化的初始显著图优化目标窗口;再利用多窗口特征对超像素做前景对象预测,获取前景显著图;其次建立背景模板,计算稀疏重构误差获取背景先验图;最后融合两种显著图,得到最终显著检测结果。在公开数据集上与11种算法进行比较,本文算法能够较为准确地检测出显著区域,尤其是在复杂背景下对多个显著目标的检测,存在明显的优势。

In order to extract the salient region accurately from the image with complex background,we propose a saliency detection method based on the objectness foreground object and background prior(OFOBP).Firstly,the image is segmented by superpixels.The superpixel color spatial distribution of the image is calculated,and the initial saliency map is obtained.A certain number of target windows with corresponding target scores are obtained by the method of binarized normed gradients algorithm,and at the same time,the target windows are used to establish search areas.The multi-window features are used to make foreground object forecast for superpixels so that the foreground saliency map is obtained.Secondly,the background template is established,and the background prior map is obtained by using the sparse reconstruction error.Finally,the two saliency maps are fused to get the final detection result.The effectiveness of the proposed method is verified by comparing it with other eleven algorithms in public data sets.The proposed algorithm can detect the salient regions more accurately,especially when dealing with the multiple salient object images with complex background.