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A collection of functions for image registration based on control points using rigid and affine transforms.

There is a newer version: 0.0.7

/*-
 * #%L
 * Image-Registration
 * %%
 * Copyright (C) 2019, 2021 Oliver Loeffler, Raumzeitfalle.net
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package net.raumzeitfalle.registration;

import java.util.Collection;

public final class Orientations {

	public static final Orientation X = new XOrientation();

	public static final Orientation Y = new YOrientation();

	public static final Orientation XY = new XYOrientation();
	
	public  Orientation determine(Collection x, Collection y) {
		return determine(x.size(), y.size());
	}
	
	public Orientation determine(int xCount, int yCount) {
		if (0 == xCount && 0 == yCount) {
			return XY;
		}
		
		if (0 == xCount) {
			return Y;
		}
		
		if (0 == yCount) {
			return X;
		}
		
		return XY;
	}
	
	private static abstract class OrientationBase implements Orientation {
		protected String orientation;
		
		private OrientationBase(String descriptor) {
			this.orientation = descriptor;
		}
		
		@Override
		public String toString() {
			return this.orientation;
		}
	}

	private static final class XOrientation extends OrientationBase {

		private XOrientation() {
			super("X");
		}
		
		@Override
		public int getDimensions() {
			return 1;
		}

		@Override
		public  T runOperation(OrientedOperation operationFactory) {
			return operationFactory.getX();
		}
		
	}

	private static final class YOrientation extends OrientationBase {
		
		private YOrientation() {
			super("Y");
		}
		
		@Override
		public int getDimensions() {
			return 1;
		}

		@Override
		public  T runOperation(OrientedOperation operationFactory) {
			return operationFactory.getY();
		}

	}

	private static final class XYOrientation extends OrientationBase {

		private XYOrientation() {
			super("XY");
		}
		
		@Override
		public int getDimensions() {
			return 2;
		}

		@Override
		public  T runOperation(OrientedOperation operationFactory) {
			return operationFactory.getCombined();
		}

	}
}