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<html>
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<head>
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<meta charset="utf-8">
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<title>PySIFT: GPU-Resident Deterministic SIFT</title>
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>PySIFT: GPU-Resident Deterministic SIFT</title>
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<style>
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body { font-family: system-ui, sans-serif; max-width: 800px; margin: 40px auto; padding: 0 20px; color: #333;
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}
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h1 { color: #1a1a1a; }
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.badge { display: inline-block; margin-right: 8px; }
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.links { margin: 24px 0; }
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.links a { display: inline-block; padding: 10px 20px; margin: 4px 8px 4px 0; background: #2ecc71; color:
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white; text-decoration: none; border-radius: 6px; font-weight: bold; }
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.links a.paper { background: #b31b1b; }
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.links a.pypi { background: #3775a9; }
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table { border-collapse: collapse; margin: 20px 0; }
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th, td { border: 1px solid #ddd; padding: 8px 14px; text-align: left; }
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th { background: #f5f5f5; }
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code { background: #f0f0f0; padding: 2px 6px; border-radius: 3px; }
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</style>
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</head>
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<body>
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<h1>PySIFT</h1>
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<p><strong>GPU-Resident Deterministic SIFT for Deep Learning Vision Pipelines</strong></p>
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<div class="links">
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<a class="paper" href="https://arxiv.org/abs/2605.17869">arXiv Paper</a>
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<a href="https://github.com/SivaIITM/PySIFT">GitHub Code</a>
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<a class="pypi" href="https://pypi.org/project/staysift/">pip install staysift</a>
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</div>
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<p>A pure-Python, GPU-resident SIFT implementation that matches OpenCV SIFT accuracy while running <strong>26%
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faster end-to-end</strong> with <strong>4x matching speedup</strong>. Zero-copy DLPack interop keeps tensors on the
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GPU across the full pipeline.</p>
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<table>
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<tr><th>Benchmark</th><th>Metric</th><th>PySIFT vs OpenCV</th></tr>
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<tr><td>HPatches</td><td>MMA@10</td><td>+2.2pp</td></tr>
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<tr><td>IMC Phototourism</td><td>Inliers/pair</td><td>303 vs 205 (+47%)</td></tr>
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<tr><td>MegaDepth-1500</td><td>AUC@10</td><td>+5.6pp</td></tr>
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<tr><td>ROxford5K</td><td>mAP</td><td>+7.5pp</td></tr>
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</table>
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<h3>Quick Start</h3>
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<pre><code>pip install staysift
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from pysift import PySIFT
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sift = PySIFT()
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keypoints, descriptors = sift.detectAndCompute(gray_image)</code></pre>
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</body>
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</html>
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