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US 2010/0061655 A1Published application
Method and Apparatus for Despeckling an Image
AssigneeDigital Business Processes, Inc.
InventorHuanfeng Ma
Life of this patent
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AssigneeDigital Business Processes, Inc.
InventorHuanfeng Ma
Estimating the term…
A method, computer readable medium, and device for reducing speckle in an image by detecting the edges of the image to create an edge detected image, binarizing the edge detected image to create a binary edge image for processing, creating a list, L, of connected components in the binary edge image, creating a list, C, of connected components in list L that are smaller than a predetermined number of pixels, determining noise candidate pixels from the edge detected image that are covered by the connected components in list C, computing a histogram he of the noise candidate pixels, calculating a threshold from the total number of noise candidate pixels, and marking the pixels in the connected components in list C having a pixel intensity smaller than the threshold as noise. The pixels marked as noise may then be removed by setting the pixels marked as noise to a background color of the image. Optionally, a number of connected components M in list C and a number of connected components N in list L are counted and a percentage p of noise candidates M to the number of connected components N is calculated as p=M/N. The processing only removes the speckle if p is more than a predetermined percentage and stops processing of the image if p is less than the predetermined percentage.
A method of reducing speckle in an image comprising:
A computer readable storage medium having instructions that when processed by a processor causes the processor to implement a method of reducing speckle in an image, the method comprising:
A device for reducing speckle in an image, comprising:
Dependencies are inferred from the claim text.