| 刘清团,汪天富,林江莉,李德玉.基于亮度不变的医学超声图像对比度增强方法[J].中国医学影像技术,2006,22(3):461~463 |
| 基于亮度不变的医学超声图像对比度增强方法 |
| Contrast enhancement method of medical ultrasonic images based on preserving brightness |
| 投稿时间：2005-11-10 修订日期：2006-01-27 |
| DOI： |
| 中文关键词: 直方图均衡化 对比度增强 医学超声图像 大津阈值 |
| 英文关键词:Histogram equalization Contrast enhancement Medical ultrasonic images Otsu threshold |
| 基金项目:本文受国家自然科学基金(60272060)、四川省青年科技基金资助项目资助(05ZQ026-019)。 |
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| 中文摘要: |
| 目的 探求一种基于亮度不变的医学超声图像对比度增强方法。方法 在改进常规直方图均衡化算法的基础上,以最小灰度平均值误差二元直方图均衡化为基础,引入另一个有效分割点。结果 实现了一种局部直方图均衡化算法-亮度保持三元双向直方图均衡化。结论 此算法较其他直方图增强方法更好地抑制了医学超声图像黑色背景过增强,保留了原图像细节信息,保持了原图像亮度,提高了图像对比度。 |
| 英文摘要: |
| Objective To explore contrast enhancement method of medical ultrasonic images based on preserving brightness. Methods Based on improving of traditional histogram equalization, the proposed method adopts the minimum mean brightness error bi-histogram equalization and an effective intersected point. Results We propose a method of local histogram equalization-brightness preserving tri-bidirectional histogram equalization. Conclusion Simulation results showed that comparing to other methods of histogram enhancement, this method prevails in its finely restrain fulsome enhancement of black background, preserving original image's detail and brightness, and enhancing the contrast. |
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