Marvell International Limited

Pamela Voss

Jay McDougal

Brian S Watson

Embodiments provide techniques for enhancing an existing image after image acquisition. These techniques include sub-sampling the original image, identifying and/or deriving local region brightness, and using the local region brightness to enhance the contrast of pixels within these regions in the original image. Sub-sampling is generally used to reduce the number of pixels and corresponding computational load. Local region brightness is localized brightness in an image determined based on the dark and light regions within the image by, for example, using a 2-D Gaussian filter. The use of the local region brightness to enhance the image may be accomplished using a lookup table that may be configured to implement a variety of techniques, for example, contrast overlay, Alpha blending, and the like, for contrast enhancement in the dark and light regions.

Shadow and highlight image enhancement

Embodiments of the present disclosure provide a method for adjusting parameters of an algorithm for enhancing an image. In various embodiments, the method includes automatically analyzing an image to identify at least one image attribute; based on the at least one image attribute, automatically determining a value of at least one parameter for an image processing algorithm; and applying the value of at least one parameter to the image processing algorithm. Other embodiments are also described and claimed.

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Corvallis, OR, United States of America

Pamela Voss