公开(公告)号：WO2008154281A3

公开(公告)日：2009-09-17

申请号：PCT/US2008065892

申请日：2008-06-05

Applicant: SENSORS UNLIMITED INC ,  STERN MARK C ,  SUDOL THOMAS

Inventor： STERN MARK C ,  SUDOL THOMAS

IPC: G06T5/40

CPC classification number: G06T5/40 ,  G06T5/009 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/30212

Abstract: A method and an apparatus for enhancing images are provided. An input image generated by an imaging device, such as a short- wavelength infrared (SWIR) camera, sensor, or any other imaging device, is processed to produce an input histogram representing the distribution of pixel intensities in the input image. Histogram start and end points are determined, and a variable plateau profile is calculated depending upon the type of enhancement desired. The plateau profile could take on any desired shape or size, and two or more plateau regions could be included in the profile. The input histogram is clipped along the variable plateau profile. A cumulative histogram is constructed from the clipped histogram, and is normalized. The input image is then transformed into an enhanced output image using the normalized cumulative histogram as a look-up table.

Abstract translation: 提供了一种用于增强图像的方法和装置。 处理由诸如短波长红外（SWIR）相机，传感器或任何其它成像装置的成像装置产生的输入图像，以产生表示输入图像中的像素强度分布的输入直方图。 确定直方图开始点和终点，并根据所需增强的类型计算可变平台曲线。 高原剖面可以采取任何所需的形状或尺寸，并且两个或多个平台区域可以包括在轮廓中。 输入直方图沿着可变平台轮廓剪切。 累积直方图由剪切直方图构造，并被归一化。 然后使用归一化的累积直方图作为查找表将输入图像变换成增强的输出图像。

公开(公告)号：WO2008154281A9

公开(公告)日：2009-12-03

申请号：PCT/US2008065892

申请日：2008-06-05

Applicant: SENSORS UNLIMITED INC ,  STERN MARK C ,  SUDOL THOMAS

Inventor： STERN MARK C ,  SUDOL THOMAS

IPC: G06T5/40

CPC classification number: G06T5/40 ,  G06T5/009 ,  G06T2207/10016 ,  G06T2207/10048 ,  G06T2207/30212

Abstract: A method and an apparatus for enhancing images are provided. An input image generated by an imaging device, such as a short- wavelength infrared (SWIR) camera, sensor, or any other imaging device, is processed to produce an input histogram representing the distribution of pixel intensities in the input image. Histogram start and end points are determined, and a variable plateau profile is calculated depending upon the type of enhancement desired. The plateau profile could take on any desired shape or size, and two or more plateau regions could be included in the profile. The input histogram is clipped along the variable plateau profile. A cumulative histogram is constructed from the clipped histogram, and is normalized. The input image is then transformed into an enhanced output image using the normalized cumulative histogram as a look-up table.

Abstract translation: 提供了用于增强图像的方法和设备。 由诸如短波长红外（SWIR）相机，传感器或任何其他成像装置的成像装置生成的输入图像被处理以产生表示输入图像中的像素强度的分布的输入直方图。 确定直方图的起点和终点，并根据所需增强的类型计算可变平稳概况。 平台轮廓可以呈现任何期望的形状或尺寸，并且轮廓中可以包括两个或更多个平台区域。 输入直方图沿变量平台轮廓剪切。 从剪切的直方图构建累积直方图，并对其进行归一化。 然后使用归一化的累积直方图作为查找表格将输入图像转换为增强的输出图像。