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    • 11. 发明授权
    • Real-time automated scene display for infrared cameras
    • 红外摄像机的实时自动化场景显示
    • US5249241A
    • 1993-09-28
    • US728907
    • 1991-07-09
    • Jerry SilvermanJonathan MooneyWilliam EwingDarryl Sato
    • Jerry SilvermanJonathan MooneyWilliam EwingDarryl Sato
    • G06T5/40
    • G06T5/40G06T5/009G06T2207/10048H04N5/33
    • A histogram projection system which automatically optimizes, tracks changes in luminance and adjusts in real time the display of wide dynamic range imagery from IR cameras. It is computationally simpler than and offers markedly superior results to the standard available technique for this purpose, histogram equalization. The new technique assigns display dynamic range equally to each occupied intensity level in the raw data in contrast to the old procedure which assigns dynamic range in proportion to the number of pixels at given levels. Less shot noise and greater resolution of image detail for smaller objects or targets are the main improvements from the new algorithm. By the expedient of undersampling the image pixels in carrying out the histogram processing, one can in effect gradually increase the degree of dynamic range assigned to majority or background pixel levels, thereby enhancing the contrast in background regions when desired.
    • 直方图投影系统,自动优化,跟踪亮度变化,并实时调整红外摄像机的宽动态范围图像的显示。 它的计算简单,并提供了显着优越的结果与标准可用的技术为此目的,直方图均衡。 新技术将原始数据中的每个占据的强度级别均匀地分配显示动态范围,这与旧程序相比较,该过程与给定级别的像素数量成比例地分配动态范围。 较小的对象或目标的图像细节较少的散粒噪声和更高的分辨率是新算法的主要改进。 通过在进行直方图处理时对图像像素进行欠采样的方法,实际上可以逐渐增加分配给多数或背景像素级的动态范围的程度,从而当需要时增强背景区域中的对比度。