org.jcodec.scale

Class BaseResampler

java.lang.Object

org.jcodec.scale.BaseResampler

Direct Known Subclasses:

BicubicResampler, LanczosResampler

public abstract class BaseResampler
extends Object

Resamples image interpolating points using Lanczos sinc over sine windowed filter.

Author:

Stanislav Vitvitskiy

Constructor Summary

Constructors

Constructor and Description
BaseResampler(Size from, Size to)

Method Summary

Modifier and Type	Method and Description
protected abstract short[]	getTapsX(int dstX)
protected abstract short[]	getTapsY(int dstY)
static void	normalizeAndGenerateFixedPrecision(double[] taps, int precBits, short[] out) Converts floating point taps to fixed precision taps.
protected abstract int	nTaps()
void	resample(Picture src, Picture dst) Interpolates points using a 2d convolution

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BaseResampler

public BaseResampler(Size from,
                     Size to)

Method Detail

getTapsX

protected abstract short[] getTapsX(int dstX)

getTapsY

protected abstract short[] getTapsY(int dstY)

nTaps

protected abstract int nTaps()

normalizeAndGenerateFixedPrecision

public static void normalizeAndGenerateFixedPrecision(double[] taps,
                                                      int precBits,
                                                      short[] out)

Converts floating point taps to fixed precision taps.

Parameters:

taps - The 64 bit double representation

precBits - Precision bits

out - Taps converted to fixed precision

resample

public void resample(Picture src,
                     Picture dst)

Interpolates points using a 2d convolution