激光与光电子学进展, 2019, 56 (10): 101005, 网络出版: 2019-07-04
基于空间平面分割和投影变换的光场图像拼接算法 下载: 1208次
Light-Field Image Stitching Algorithm Based on Spatial Plane Segmentation and Projective Transformation
图像处理 光场图像 图像拼接 平面拟合 图像分割 图像对齐 image processing light-field image image stitching plane fitting image segmentation image alignment
摘要
提出了一种基于空间平面分割和投影变换的光场图像拼接算法。依据光场深度信息对目标场景进行平面拟合和分割,并根据颜色信息利用马尔可夫模型对分割结果进行了优化。利用不同视点间的光流信息求解投影变换矩阵,将对应的分割区域投影变换到同一视点。通过计算最小缝合线拼接重叠区域,并采用泊松优化的方法融合拼接区域。实验结果表明,所提算法能够生成大视野的光场图像,且光场中光线对齐准确,无明显几何畸变。
Abstract
A method for stitching light-field images is proposed based on spatial plane segmentation and projective transformation. The spatial plane fitting and segmentation are performed on the target scene according to the depth map, and the initial segmentation result is refined using a Markov random framework model according to the color information. The corresponding segmentation regions are projected to the same viewpoint using the projective transformation matrix, which is calculated using the optical-flow information among different viewpoints. Finally, a minimum energy seam is calculated to stitch together the corresponding overlapped regions, and a Poisson optimization technique is utilized to blend the stitched area. The experimental results show that the proposed method can generate large field of view light-field images without any ray misalignment or noticeable geometric distortion.
毛一鸣, 王建明, 晏涛, 陈丽芳, 刘渊. 基于空间平面分割和投影变换的光场图像拼接算法[J]. 激光与光电子学进展, 2019, 56(10): 101005. Yiming Mao, Jianming Wang, Tao Yan, Lifang Chen, Yuan Liu. Light-Field Image Stitching Algorithm Based on Spatial Plane Segmentation and Projective Transformation[J]. Laser & Optoelectronics Progress, 2019, 56(10): 101005.