基于人眼视觉特性的医学图像处理方法

A Medical Image Processing Method Based on Human Eye Visual Property

在数字化 X光影像仪中 ,医学图像经处理后供医生进行诊断用。由于图像信息是通过人的视觉来获取的 ,所以在图像处理中 ,应充分考虑人眼的视觉特性。从人眼视觉的生理特性和人的心理特性出发 ,对图像的灰度分辨能力和图像结构的敏感性两方面进行了探讨和测试。根据测试结果总结了视觉的有关规律 ,建立了相应的数学模型和具体实现方法 ,并实际应用于 X光图像处理系统中 ,提高了图像质量 ,使人眼更充分地获得所需信息 ,增加了医生诊断的准确性。

In a digital X-ray imager, the medical image is used for doctor diagnosis after it has been processed. Since the image information is obtained through human vision, so the visual property of human eye should be fully taken account in image processing. Starting with the physiological property of human eye and human psychological property, both gray resolution of an image and sensitivity of an image structure are investigated and tested. The related regularities for the vision are summarized, the corresponding mathematical model and concrete realizing method are set up according to the tested results. The method has been applied to the practical X-ray image processing systems and the image quality is improved. In this way human eye can obtain the required information more fully and the accuracy of the doctor diagnosis is improved.