Examples with ImageAccessor imagingbook.lib.image.access.ImageAccessor used on opensource projects

Example 1 with ImageAccessor

use of imagingbook.lib.image.access.ImageAccessor in project imagingbook-common by imagingbook.

the class ImageExtractor method extractImage.

/**
 * Fills the image {@code R} from the source image
 * {@code I} (referenced by {@code this} object).
 * The image {@code R} is extracted from a quadrilateral patch of the source image,
 * defined by the transformation of the boundary of {@code R} by {@code T(x)}.
 * Grayscale and color images my not be mixed (i.e., {@code R} must be of the same type as {@code I}).
 * @param R the image to be filled.
 * @param T a {@link LinearMapping2D} object.
 */
public void extractImage(ImageProcessor R, LinearMapping2D T) {
    int prevInterpolationMethod = I.getInterpolationMethod();
    // save current interpolation method
    I.setInterpolationMethod(interpolationMethod);
    ImageAccessor iaI = ImageAccessor.create(I);
    ImageAccessor iaR = ImageAccessor.create(R);
    int wT = R.getWidth();
    int hT = R.getHeight();
    for (int u = 0; u < wT; u++) {
        for (int v = 0; v < hT; v++) {
            Pnt2d uv = PntInt.from(u, v);
            Pnt2d xy = T.applyTo(uv);
            float[] val = iaI.getPix(xy.getX(), xy.getY());
            iaR.setPix(u, v, val);
        }
    }
    // restore interpolation method
    I.setInterpolationMethod(prevInterpolationMethod);
}