基于三维点云的光栅三维显示景深优化方法OA北大核心CSTPCD
Depth of field adjustment method on 3D raster display based on 3D point clouds
对三维显示内容进行深度压缩处理,是一种针对裸眼光栅三维显示器景深范围不足问题的有效解决方法,但常用的压缩方法会使场景中的主体不可避免地产生几何形变.本文面向密集视点光栅三维显示,提出了一种基于三维点云的景深优化方法,根据三维场景的双目视差图重建出三维点云,将场景主体点云分割,仅对超出显示器景深范围的主体进行深度位置调整,保持场景主体的几何结构不变,从而实现三维场景深度的整体压缩.对本文方法进行关于视觉体验的多项统计实验,对于每个参与者,本文方法处理后结果得票率均超过77%;对于每个实验场景,本文方法得票率均超过80%.实验结果证明了本文方法对观众主观感受有明显提升,可以在压缩场景整体深度的同时保证场景主体没有形变,让观众在观看三维场景时没有不自然感且对场景主体保留较强的深度感知.
Depth compression processing for three-dimensional display content is an effective solution to the problem of insufficient depth range in 3D raster displays.However,commonly used compression methods inevitably cause geometric deformation in the main subjects of the scene.This paper proposes a depth optimization method for dense viewpoint3D raster displays based on 3D point clouds.By reconstructing the 3D point cloud from the stereo disparity map of the 3D scene,the main subject's point cloud is segmented,and depth position adjustments are made only for subjects exceeding the display's depth range,thereby maintaining the geometric structure of the scene's main subjects.This achieves overall depth compression of the 3D scene without altering the geometric integrity of the main subjects.Through a series of statistical experiments focused on the visual experience,the proposed method received an approval rating exceeding 77%from each participant and surpassed 80%for every experimental scenario.The results affirm the method's significant enhancement of the audience's subjective perception,compressing the overall depth of the scene while ensuring no deformation of the main subjects,thus providing viewers with a natural viewing experience and strong depth perception of the scene's main subjects.
易湘诚;颜玢玢;陈硕;王昕柯;邢树军;于迅博;高鑫;桑新柱
北京邮电大学 电子工程学院,北京 100876
电子信息工程
裸眼三维显示三维点云实例分割深度压缩
autostereoscopic 3D display3D point cloudinstance segmentationdepth compression
《液晶与显示》 2024 (007)
883-891 / 9
国家自然科学基金(No.62175017,No.62075016)Supported by National Natural Science Foundation of China(No.62175017,No.62075016)
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