摘要
针对传统伪彩化方法单级多通道传递函数设计的缺陷,提出了一种基于两级传递的医学图像伪彩化模型,避免了传统方法中需要在各个通道分别进行的复杂的传递函数选择和控制点调整。在第一级灰度处理级提出了4种模式,可以分别对原灰度图中的低段、中段和高段灰度分布信息进行拉伸或压缩,强调了感兴趣灰度级范围内的目标。在第二级伪彩化级提出了2种伪彩化方法,并确定使用彩虹色伪彩化,增强了图像的视觉感观和辨识能力。该模型的灵活性、扩展性较好,能够提供多种观察模式,适合多种应用场合,生成的伪彩化图像自然、清晰,更利于医生诊断。
o deal with the drawbacks of the traditional transfer function designing with single-stage multi- channel model, a novel pseudo-colorization model based on two-stage transfer function was developed. Thus, the complex function selection and control point tuning could be avoided. Four modes in the prima- ry grayscale transform stage were proposed, in which the low-level, high-level, middle-level of the origi- nal image~ grayscale could be stretched or compressed, therefore the area of interest was enhanced. In the secondary colorizing stage, two methods were proposed and the rainbow method was selected, consequent- ly the visual effect and distinguishing ability were improved. The two-stage model has exceptional flexibil- ity and expansibility, ready for multiple applications, and the generated pseudo-color images are quite natural and clear, more conducive to the doctors for diagnosis.
出处
《中国体视学与图像分析》
2013年第2期135-144,共10页
Chinese Journal of Stereology and Image Analysis
