不规则空间体三维显示采样面校正与颜色优化
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摘要
对基于多屏旋转的真三维显示器的高保真真三维显示进行了研究。对因显示空间不规则出现的畸变采用采样面校正;为提高三维影像中各组织的区分度对灰度采样图像进行着色,对着色中出现的色彩结块、偏差等用分块二次插值方法进行优化。实验结果表明:能实现无视觉死区的全角度三维影像,当分块数小于块中像素插值数时,分块插值可同时提高彩色均匀度和图像精度,彩色三维影像内部结构能更清楚呈现各组织间的关系,同时能突出真三维影像内部的体像素,满足真三维成像对清晰度与色彩的要求。
The high fidelity volumetric display based on multi-screen was studied in this paper.The distortion caused by the irregular imaging space was corrected by the sampling surface calibration.The gray-scale images were colored up to separate every tissue in the volumetric three-dimensional display.The color uniformity and image resolution were be improved by block quadratic interpolation method.The experiment results showed that the volumetric three-dimensional display was able to demonstrate three-dimensional images in all angles without dead area.The color uniformity and resolution would be improved synchronously when the number of block was less than the number of pixel inside the block,and the color volumetric imaging would offer clear and colorful tissues inside the body.The methods proposed could satisfy the requirements of resolution,color and fidelity in volumetric threedimensional display.
The high fidelity volumetric display based on multi-screen was studied in this paper.The distortion caused by the irregular imaging space was corrected by the sampling surface calibration.The gray-scale images were colored up to separate every tissue in the volumetric three-dimensional display.The color uniformity and image resolution were be improved by block quadratic interpolation method.The experiment results showed that the volumetric three-dimensional display was able to demonstrate three-dimensional images in all angles without dead area.The color uniformity and resolution would be improved synchronously when the number of block was less than the number of pixel inside the block,and the color volumetric imaging would offer clear and colorful tissues inside the body.The methods proposed could satisfy the requirements of resolution,color and fidelity in volumetric threedimensional display.
引文
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[7]岳健,樊琼剑,沈春林.体扫描显示系统中螺旋旋转屏及螺旋切片生成算法[J].中国图象图形学报,2011,16(8):1467-1473.
[8]樊琼剑,李莉,沈春林,等.体三维显示系统中静态成像技术的死区研究[J].光电工程,2009,36(5):56-61.
[9]夏雪,田丰,王鹤.基于真三维显示的脑外科微创手术规划[J].电视技术,2014,38(4):52-55.
[10]田丰,夏雪,王鹤.真三维显示在医学教育与仿真中的应用[J].液晶与显示,2012,27(4):535-538.
[2]BLUNDELL B G,SCHWARZ A J.The classification of volumetric display system:characteristics and predictability of the image space[J].IEEE Trans on Visualization and CG,2002,8(1):66-75.
[3]FAVALORA G E.Volumetric 3ddisplay and application infrastrcutrue[J].IEEE Computer,2005,38(8):37-44.
[4]MACFARLANE D L.A volumetric three dimensional display[J].Applied Optics,1994,33(31):7453-7457.
[5]冯奇斌,王小丽,吕国强,等.固态体积式真三维立体显示器的色度学特性[J].液晶与显示,2011,26(1):100-104.
[6]DODGSON N A.Autostereoscopic 3D display[J].IEEE Trans of Computer,2006,38(8):31-36.
[7]岳健,樊琼剑,沈春林.体扫描显示系统中螺旋旋转屏及螺旋切片生成算法[J].中国图象图形学报,2011,16(8):1467-1473.
[8]樊琼剑,李莉,沈春林,等.体三维显示系统中静态成像技术的死区研究[J].光电工程,2009,36(5):56-61.
[9]夏雪,田丰,王鹤.基于真三维显示的脑外科微创手术规划[J].电视技术,2014,38(4):52-55.
[10]田丰,夏雪,王鹤.真三维显示在医学教育与仿真中的应用[J].液晶与显示,2012,27(4):535-538.