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- 2018
图像亮度精确控制的双直方图均衡算法
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Abstract:
针对传统的双直方图均衡算法（BBHE）不能精确实现图像亮度保持目标的问题，该文提出一种新的双直方图均衡算法。基于给定图像的灰度直方图，建立灰度阈值与输出图像亮度之间的对应关系；求解满足图像亮度要求的所有灰度阈值，从中选择一个最佳阈值用于图像的双直方图均衡处理，使输出图像与BBHE算法增强的图像之间具有最大直方图相似度。基于多种亮度图像的实验结果表明，BBHE算法的输出图像亮度与期望值之间相差-36.94%～ 8.85%，该算法将误差范围缩小到0.43%～ 2.56%，显著提高了双直方图均衡算法控制图像亮度目标的精确性，运行速度满足实时要求。
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