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TVec.PixelDownSampleHigh Method (integer, TVec, integer, integer, TVec, TVec)
TVec Class | TVec Members | MtxVec Namespace | PixelDownSampleHigh Method | Example | See Also
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Downsample the vectors Y and (optionaly) X starting at position Index and for Len samples.

Pascal
procedure PixelDownSampleHigh(Width: integer; Y: TVec; Index: integer; Len: integer; X: TVec = nil; NX: TVec = nil); overload;
Description

The method downsamples only the maximum values. This can be usefull, if the input is already a downsampled signal which has to be further downsampled.

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Example
var a,b,c,d,High,Low: TVec; begin CreateIt(a,b,c,d); CreateIt(High,Low); try a.SetIt(False,[0,0,0,1,2,3,1,2,3]); b.PixelDownSample(4,a); High.Demultiplex(b,2,0); Low.Demultiplex(b,2,1); c.PixelDownSampleHigh(2,High); //further downsample d.PixelDownSampleLow(2,Low); //further downsample b.Size(2*c.Length); b.Multiplex(c,2,0); b.Multiplex(d,2,1); //b now contains the same result, as if we would have called //on the start: b.PixelDownSample(2,a); finally FreeIt(a,b,c,d); FreeIt(High,Low); end; end;
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