boofcv.alg.geo.bundle.BundleAdjustmentMetricSchurJacobian_DDRM Maven / Gradle / Ivy

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BoofCV is an open source Java library for real-time computer vision and robotics applications.

There is a newer version: 1.1.5

/*
 * Copyright (c) 2011-2020, Peter Abeles. All Rights Reserved.
 *
 * This file is part of BoofCV (http://boofcv.org).
 *
 * 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.
 */

package boofcv.alg.geo.bundle;

import boofcv.abst.geo.bundle.BundleAdjustmentSchur_DDRM;
import org.ejml.data.DMatrix;
import org.ejml.data.DMatrixRMaj;

/**
 * Computes the Jacobian for {@link BundleAdjustmentSchur_DDRM} using sparse matrices
 * in EJML. Parameterization is done using the format in {@link CodecSceneStructureMetric}.
 *
 * @author Peter Abeles
 */
public class BundleAdjustmentMetricSchurJacobian_DDRM
		extends BundleAdjustmentMetricSchurJacobian {
	@Override
	public void process( double[] input, DMatrixRMaj left, DMatrixRMaj right ) {
		internalProcess(input, left, right);
	}

	@Override
	protected void set( DMatrix matrix, int row, int col, double value ) {
		matrix.unsafe_set(row, col, value);
	}

	@Override
	protected void add( DMatrix matrix, int row, int col, double value ) {
		DMatrixRMaj m = (DMatrixRMaj)matrix;
		m.data[row*m.numCols + col] += value;
	}
}