| http://www.w3.org/ns/prov#value | - al direction; a first high-pass filter for extracting a high frequency component from an accumulated/added high frequency component signal outputted from said horizontal accumulating/adding means; first N-point accumulating/adding means for accumulating/adding a signal outputted from said first high-pass filter on a predetermined N-point basis, where N is a positive integer; a first temporal filte
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