Method and/or apparatus for detecting edges of blocks in an image processing system
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United States of America Patent
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Sep 15, 2009
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N/A
app pub date -
Nov 7, 2005
filing date -
Nov 7, 2005
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Expired
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Abstract
An apparatus comprising an edge detector circuit, an edge strength detector and an edge strength threshold circuit. The edge detector circuit may be configured to determine a plurality of default directions of a macroblock in response to a plurality of input signals comprising information about a plurality of samples in the macroblock. The edge strength detector circuit may be configured to generate a maximum strength signal and a next maximum strength signal in response to the default directions. The edge strength threshold circuit may be configured to generate an edge direction signal and an edge strength signal in response to the maximum strength signal and the next maximum strength signal. The edge direction signal may comprise (i) any one of the default directions when in a first state and (ii) any one of a plurality of intermediate directions when in a second state.
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