Fig. 1. Schematic diagram of biplane representation of light field.光场的双平面表示方法示意图

Fig. 2. Schematic diagram of a multiview synthetic aperture imaging system.多视点合成孔径成像系统示意图

Fig. 3. The blurring characteristics of defocused target when refocusing to different depth of the scene: (a) Refocus to the foreground (flower is the focus object; (b) refocus to the background (pictorial is the focus object).重聚焦至场景不同深度时离焦目标的虚化特征　(a) 重聚焦至前景(花为聚焦目标物); (b) 重聚焦至后景(画报为聚焦目标物)

Fig. 4. The comparison of focusing evaluation between traditional method and our method: (a) Evaluation mark results of traditional methods; (b) evaluation mark results of our method; (c) extraction results of focus areas of traditional methods; (d) extraction results of focus areas of our method.传统方法与本文方法的聚焦度判别结果对比　(a)传统方法判别标记结果; (b)本文方法的判别标记结果; (c) 传统方法聚焦区域提取结果; (d)本文方法聚焦区域提取结果

Fig. 5. The light field refocusing image which focus on the background: (a) Reference viewpoint image; (b) reference viewpoint image which have removed foreground occlusion; (c) reconstructed image focusing on the background; (d) reconstructed image removing foreground occlusion.对焦至后景的光场重聚焦图像　(a)参考视点图像; (b)去除前景遮挡物的参考视点图像; (c)对焦至后景的重建图像; (d)去除前景遮挡物的重建图像

Table 1. Quality evaluation of refocusing imaging results for the second experiment.