Adaptive image filter for filtering image information

Details Adaptive image filter for filtering image information Adaptive image filter for filtering image information

2006-02-09

2010-12-28

Bali, Vikkram (Department: 2624)

Image analysis

Image enhancement or restoration

Image filter

C382S260000

Reexamination Certificate

active

07860334

ABSTRACT:
This disclosure describes adaptive filtering techniques to improve the quality of captured imagery, such as video or still images. In particular, this disclosure describes adaptive filtering techniques that filter each pixel as a function of a set of surrounding pixels. An adaptive image filter may compare image information associated with a pixel of interest to image information associated with a set of surrounding pixels by, for example, computing differences between the image information associated with the pixel of interest and each of the surrounding pixels of the set. The computed differences can be used in a variety of ways to filter image information of the pixel of interest. In some embodiments, for example, the adaptive image filter may include both a low pass component and high pass component that adjust as a function of the computed differences.

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