DYNAMIC RANGE-ADJUSTMENT APPARATUSES AND METHODS
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United States of America Patent
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Issued Date -
Nov 27, 2014
app pub date -
May 24, 2013
filing date -
May 24, 2013
priority date (Note) -
Abandoned
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Abstract
A dynamic range-adjustment apparatus is provided. The apparatus includes: an input unit for receiving an original image; an histogram equalization unit, coupled to the input unit, for performing contrast enhancement on the original image to produce a contrast-enhanced image; a factor-determination unit, coupled to the input unit and the histogram equalization unit, for determining a first factor based on the gray level of a pixel of the original image and the tone of the corresponding pixel of the contrast-enhanced image; and an adjustment unit, coupled to the input unit, the histogram equalization unit and the factor-determination unit.
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