| // Copyright (c) 2022, ETH Zurich and UNC Chapel Hill. | |
| // All rights reserved. | |
| // | |
| // Redistribution and use in source and binary forms, with or without | |
| // modification, are permitted provided that the following conditions are met: | |
| // | |
| // * Redistributions of source code must retain the above copyright | |
| // notice, this list of conditions and the following disclaimer. | |
| // | |
| // * Redistributions in binary form must reproduce the above copyright | |
| // notice, this list of conditions and the following disclaimer in the | |
| // documentation and/or other materials provided with the distribution. | |
| // | |
| // * Neither the name of ETH Zurich and UNC Chapel Hill nor the names of | |
| // its contributors may be used to endorse or promote products derived | |
| // from this software without specific prior written permission. | |
| // | |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE | |
| // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| // POSSIBILITY OF SUCH DAMAGE. | |
| // | |
| // Author: Johannes L. Schoenberger (jsch-at-demuc-dot-de) | |
| namespace colmap { | |
| namespace retrieval { | |
| struct FeatureGeometryTransform { | |
| float scale = 0.0f; | |
| float angle = 0.0f; | |
| float tx = 0.0f; | |
| float ty = 0.0f; | |
| }; | |
| struct FeatureGeometry { | |
| // Compute the similarity that transforms the shape of feature 1 to feature 2. | |
| static FeatureGeometryTransform TransformFromMatch( | |
| const FeatureGeometry& feature1, const FeatureGeometry& feature2); | |
| static Eigen::Matrix<float, 2, 3> TransformMatrixFromMatch( | |
| const FeatureGeometry& feature1, const FeatureGeometry& feature2); | |
| // Get the approximate area occupied by the feature. | |
| float GetArea() const; | |
| // Get the approximate area occupied by the feature after applying an affine | |
| // transformation to the feature geometry. | |
| float GetAreaUnderTransform(const Eigen::Matrix2f& A) const; | |
| float x = 0.0f; | |
| float y = 0.0f; | |
| float scale = 0.0f; | |
| float orientation = 0.0f; | |
| }; | |
| // 1-to-M feature geometry match. | |
| struct FeatureGeometryMatch { | |
| FeatureGeometry geometry1; | |
| std::vector<FeatureGeometry> geometries2; | |
| }; | |
| } // namespace retrieval | |
| } // namespace colmap | |