Enhancing an image, such as an image having bi-valued pixel...

Details Enhancing an image, such as an image having bi-valued pixel... Enhancing an image, such as an image having bi-valued pixel...

2000-02-25

2009-02-24

Thompson, James A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060, C358S003240

Reexamination Certificate

active

07495805

ABSTRACT:
A method is proposed for converting an image in which each pixel takes one of two binary values, into an image in which each pixel can take continuous values. The method is iterative and works in the space domain. For each pixel, a neighborhood of the image is defined containing that pixel and other pixels. In a first iteration, the method obtains a continuous value for each pixel as a weighted sum of the binary values of the pixels in its neighborhood. In further iterations, the method obtains a continuous value for each pixel as a weighted sum of the values of the pixels in its neighborhood at the previous iteration.

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