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公开(公告)号：US20240257306A1
公开(公告)日：2024-08-01
申请号：US18102865
申请日：2023-01-30
Inventor： Robin L Brown , Jaime A Caicedo Baquerizo , Gregory W Sletterink
CPC classification number: G06T5/40 , G06T5/90 , G06T2207/20024
Abstract: A method of image enhancement, the method comprising: obtaining image data representing an image comprising a plurality of pixels, each having a pixel intensity value, the image further comprising a region of interest; analyzing image data associated with the region of interest and gathering relevant statistics thereon; analyzing image data associated with the image as a whole and gathering relevant statistics thereon; accumulating a histogram based on the intensity value of pixels in the image as a whole; defining histogram bins of interest that correspond to a range of pixel intensity values from within the region of interest; attenuating histogram bins outside of the bins of interest OR multiplying bins of interest by a scaling factor; using the attenuated or scaled histogram to create a cumulative distribution function; and using the cumulative distribution function to produce a contrast enhanced image.
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公开(公告)号：US11049226B1
公开(公告)日：2021-06-29
申请号：US16391783
申请日：2019-04-23
Inventor： Derek T Robison , Robin L Brown , Jason V Irr , Gregory W Sletterink
Abstract: Local detail enhancement (LDE) is an imagery contrast enhancement method applied to visible and uncooled long wave imagery. It enhances local spatial detail through the use of a median based high/band pass filter. The generated detail channel is blended with a histogram-equalized version of the image, creating an image that contains both local detail as well as retaining some amount of global intensity. Retaining global intensity coherency allows for easier target acquisition when compared to fully local forms of contrast enhancement.
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