MEMBER, IEEE, Systems and Research Center, Honeywell, Inc., Minneapolis, MN 55413.
IEEE Trans Pattern Anal Mach Intell. 1981 Jun;3(6):655-61. doi: 10.1109/tpami.1981.4767166.
A recursive filter approach is introduced to simplify real-time implementation of an adaptive contrast enhancement scheme for imaging sensors. With this scheme, even scenes possessing large global dynamic ranges (>40 dB) can be accommodated by the limited dynamic range (20 dB) of a display without losing the local contrast essential for image interpretation. This paper describes the recursive filter implementation of the local area contrast enhancement scheme using charge-coupled devices and the resultant real-time hardware capable of processing standard 525 and 875 line TV compatible video (from vidicons, videotape recorders, etc). Several examples from video imagery are included to demonstrate its effectiveness.
引入了递归滤波器方法，以简化成像传感器自适应对比度增强方案的实时实现。有了这个方案，即使是具有大的全局动态范围（>40dB）的场景，也可以通过显示设备的有限动态范围（20dB）来适应，而不会丢失图像解释所必需的局部对比度。本文描述了使用电荷耦合器件实现局部区域对比度增强方案的递归滤波器的实现，以及由此产生的实时硬件，能够处理标准的 525 线和 875 线电视兼容视频（来自摄像管、磁带录像机等）。从视频图像中包括了几个示例，以证明其有效性。
