【摘要】 医学成像仪器产生12位的体数据,然而普通显示器只支持8位的灰度图。如果使用普通显示器来显示医学图像,显卡会自动将这些12位数据转化成8位数据,这就造成了数据动态范围被压缩。解决这一问题,在2D领域通常使用昂贵的医学专用灰阶显示器。在3D领域却限制了医生使用三维可视化软件。尝试将一些在2D图像处理中使用的图像增强技术如加权平均模板,不同程度曝光等来实现色调映射算法等应用到三维体数据的显示当中,通过种种复杂的数据变换,使得在普通显示器上显示的8位灰度图呈现出更高的动态范围,得到更为生动、更加丰富的显示效果。这种技术也可以实现任意位数的转化,使得12位显示器的显示效果也可以得到增强。更多还原

【Abstract】 Nowadays the medical imaging apparatuses generate 12 bit volume data,but the commonly used displayers are only capable of handling 8 bit data.So when general displayers are used to display medical images,their graphics cards will automatically turn these 12 bit data to 8 bit data,which causes the compression of data’s dynamic ranges.In order to resolve the problem,in 2D area it normally uses dear special grey scale medical displayers,however in 3D area the doctors are limited in using 3D visualization software.In this paper,the trial was proposed to apply the image enhancement techniques used in 2D image processing to 3D volume data display,such as weighted average template,dogging and burning,etc.to realize tone mapping algorithm,which enables 8 bit grey-scale images displayed on general displayers will present a higher dynamic range through various complicated data transformation,and to get a more lively and ample displaying effect.This technique can also be used to realize the transformation between any bit numbers to make the display effect of a 12 bit displayer enhanced.更多还原