/**
* Create an ellipse based on the features parameters. Scale the ellipse about its centre with the
* given scale factor.
*
* @param sf the scale factor
* @return an ellipse
*/
public Ellipse getEllipse(float sf) {
float u = (float) m10();
float v = (float) m01();
Matrix sm =
new Matrix(
new double[][] {
{u20(), u11()},
{u11(), u02()}
});
return EllipseUtilities.ellipseFromCovariance(u, v, sm, sf);
}
private void displayCurrentPatch(
FImage unwarped,
float unwarpedx,
float unwarpedy,
FImage warped,
int warpedx,
int warpedy,
Matrix transform,
float scale) {
DisplayUtilities.createNamedWindow("warpunwarp", "Warped and Unwarped Image", true);
logger.debug("Displaying patch");
float resizeScale = 5f;
float warppedPatchScale = resizeScale;
ResizeProcessor patchSizer = new ResizeProcessor(resizeScale);
FImage warppedPatchGrey = warped.process(patchSizer);
MBFImage warppedPatch =
new MBFImage(warppedPatchGrey.clone(), warppedPatchGrey.clone(), warppedPatchGrey.clone());
float x = warpedx * warppedPatchScale;
float y = warpedy * warppedPatchScale;
float r = scale * warppedPatchScale;
warppedPatch.createRenderer().drawShape(new Ellipse(x, y, r, r, 0), RGBColour.RED);
warppedPatch.createRenderer().drawPoint(new Point2dImpl(x, y), RGBColour.RED, 3);
FImage unwarppedPatchGrey = unwarped.clone();
MBFImage unwarppedPatch =
new MBFImage(
unwarppedPatchGrey.clone(), unwarppedPatchGrey.clone(), unwarppedPatchGrey.clone());
unwarppedPatch = unwarppedPatch.process(patchSizer);
float unwarppedPatchScale = resizeScale;
x = unwarpedx * unwarppedPatchScale;
y = unwarpedy * unwarppedPatchScale;
// Matrix sm = state.selected.secondMoments;
// float scale = state.selected.scale * unwarppedPatchScale;
// Ellipse e = EllipseUtilities.ellipseFromSecondMoments(x, y, sm, scale*2);
Ellipse e =
EllipseUtilities.fromTransformMatrix2x2(transform, x, y, scale * unwarppedPatchScale);
unwarppedPatch.createRenderer().drawShape(e, RGBColour.BLUE);
unwarppedPatch.createRenderer().drawPoint(new Point2dImpl(x, y), RGBColour.RED, 3);
// give the patch a border (10px, black)
warppedPatch = warppedPatch.padding(5, 5, RGBColour.BLACK);
unwarppedPatch = unwarppedPatch.padding(5, 5, RGBColour.BLACK);
MBFImage displayArea =
warppedPatch.newInstance(warppedPatch.getWidth() * 2, warppedPatch.getHeight());
displayArea.createRenderer().drawImage(warppedPatch, 0, 0);
displayArea.createRenderer().drawImage(unwarppedPatch, warppedPatch.getWidth(), 0);
DisplayUtilities.displayName(displayArea, "warpunwarp");
logger.debug("Done");
}