How to use

border

method

in

boofcv.abst.distort.FDistort

/**
 * <p>Sets the border to EXTEND.</p>
 */
public FDistort borderExt() {
  return border(BorderType.EXTENDED);
}

/**
 * Sets the border by type.
 */
public FDistort border( BorderType type ) {
  if( borderType == type )
    return this;
  borderType = type;
  return border(FactoryImageBorder.generic(type, inputType));
}

  /**
   * Sets the border to a fixed gray-scale value
   */
  public FDistort border( double value ) {
    // to recycle here the value also needs to be saved
//        if( borderType == BorderType.VALUE )
//            return this;
    borderType = BorderType.ZERO;
    return border(FactoryImageBorder.genericValue(value, inputType));
  }

/**
 * Specifies the input and output image and sets interpolation to BILINEAR, black image border, cache is off.
 */
public FDistort init(ImageBase input, ImageBase output) {
  this.input = input;
  this.output = output;
  inputType = input.getImageType();
  interp(InterpolationType.BILINEAR);
  border(0);
  cached = false;
  distorter = null;
  outputToInput = null;
  return this;
}

private void applyScaling() {
  scaledImage.reshape(panel.getWidth(), panel.getHeight());
  if( scaledImage.width <= 0 || scaledImage.height <= 0 ) {
    return;
  }
  if( latestImage.width != 0 && latestImage.height != 0 ) {
    new FDistort(latestImage, scaledImage).interp(interpType).border(BorderType.EXTENDED).scale().apply();
    BufferedImage out = ConvertBufferedImage.convertTo(scaledImage, null, true);
    panel.setImageUI(out);
    panel.repaint();
  }
}