<?xml version="1.0" encoding="UTF-8"?><toc><section id="sec_foreword"><title>Foreword</title></section><section id="sec_intro"><title>Introduction</title></section><section id="sec_1"><label>1</label><title>Scope</title></section><section id="sec_2"><label>2</label><title>Normative references</title></section><section id="sec_3"><label>3</label><title>Terms and definitions</title></section><section id="sec_4"><label>4</label><title>Symbols and abbreviated terms</title><section id="sec_4.1"><label>4.1</label><title>General</title></section><section id="sec_4.2"><label>4.2</label><title>Abbreviations</title></section><section id="sec_4.3"><label>4.3</label><title>Arithmetic operations</title></section><section id="sec_4.4"><label>4.4</label><title>Logical operators</title></section><section id="sec_4.5"><label>4.5</label><title>Relational operators</title></section><section id="sec_4.6"><label>4.6</label><title>Bitwise operators</title></section><section id="sec_4.7"><label>4.7</label><title>Assignment</title></section><section id="sec_4.8"><label>4.8</label><title>Set operators</title></section><section id="sec_4.9"><label>4.9</label><title>Constants</title></section><section id="sec_4.10"><label>4.10</label><title>Functions</title></section></section><section id="sec_5"><label>5</label><title>Reference software</title><section id="sec_5.1"><label>5.1</label><title>Reference software location</title></section><section id="sec_5.2"><label>5.2</label><title>Reference software license</title></section><section id="sec_5.3"><label>5.3</label><title>Reference software documentation</title></section><section id="sec_5.4"><label>5.4</label><title>Reference software compilation</title></section><section id="sec_5.5"><label>5.5</label><title>Reference software architecture</title></section></section><section id="sec_6"><label>6</label><title>Conformance testing</title><section id="sec_6.1"><label>6.1</label><title>Conformance image data set and reference CDVS bitstreams</title></section><section id="sec_6.2"><label>6.2</label><title>Conformance test conditions</title><section id="sec_6.2.1"><label>6.2.1</label><title>General</title></section><section id="sec_6.2.2"><label>6.2.2</label><title>Global descriptor test</title></section><section id="sec_6.2.3"><label>6.2.3</label><title>Interest point test</title></section><section id="sec_6.2.4"><label>6.2.4</label><title>Local descriptor test</title></section></section></section><section id="sec_7___1"><label>7</label><title>Usage guidelines</title><section id="sec_7.1"><label>7.1</label><title>Overview</title></section><section id="sec_7.2"><label>7.2</label><title>Pairwise matching</title><section id="sec_7.2.1"><label>7.2.1</label><title>Overview</title></section><section id="sec_7.2.2"><label>7.2.2</label><title>Global descriptor matching</title></section><section id="sec_7.2.3"><label>7.2.3</label><title>Local descriptors matching</title><section id="sec_7.2.3.1"><label>7.2.3.1</label><title>Two-way local feature matching</title></section><section id="sec_7.2.3.2"><label>7.2.3.2</label><title>Geometric verification</title></section><section id="sec_7.2.3.3"><label>7.2.3.3</label><title>Weighted inliers computation</title></section></section><section id="sec_7.2.4"><label>7.2.4</label><title>Image match decision</title></section><section id="sec_7.2.5"><label>7.2.5</label><title>Homography estimation for localization</title></section></section><section id="sec_7.3"><label>7.3</label><title>Retrieval</title><section id="sec_7.3.1"><label>7.3.1</label><title>Overview</title></section><section id="sec_7.3.2"><label>7.3.2</label><title>Shortlist generation</title></section><section id="sec_7.3.3"><label>7.3.3</label><title>Geometric reranking</title></section></section></section></toc>