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flykhan
2026-05-03 11:47:30 +08:00
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<svg width="700" height="240" xmlns="http://www.w3.org/2000/svg">
<text x="350" y="22" fill="#333" font-size="14" font-weight="bold" text-anchor="middle">Semantic Segmentation: Per-Pixel Classification</text>
<!-- Input image (street scene) -->
<text x="160" y="48" fill="#666" font-size="11" text-anchor="middle">Input Image</text>
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<!-- Road -->
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<!-- Car -->
<rect x="110" y="120" width="60" height="30" rx="4" fill="#2c3e50" opacity="0.4"/>
<!-- Person -->
<ellipse cx="170" cy="125" rx="8" ry="8" fill="#f5cba7" opacity="0.5"/>
<rect x="162" y="133" width="16" height="20" fill="#2c3e50" opacity="0.3"/>
<!-- Tree -->
<polygon points="100,90 85,120 115,120" fill="#27ae60" opacity="0.3"/>
<!-- Arrow -->
<text x="340" y="120" fill="#333" font-size="18" text-anchor="middle">→</text>
<text x="340" y="140" fill="#666" font-size="9" text-anchor="middle">segmentation</text>
<text x="340" y="152" fill="#666" font-size="9" text-anchor="middle">model</text>
<!-- Segmentation output -->
<text x="530" y="48" fill="#666" font-size="11" text-anchor="middle">Segmentation Map</text>
<rect x="400" y="55" width="260" height="140" rx="4" fill="#fff" stroke="#999" stroke-width="1.5"/>
<!-- Sky (blue) -->
<rect x="404" y="59" width="252" height="50" fill="#3498db" opacity="0.4"/>
<!-- Buildings (grey) -->
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<!-- Road (dark) -->
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<!-- Car (red) -->
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<!-- Person (green) -->
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<rect x="532" y="133" width="16" height="20" fill="#27ae60" opacity="0.5"/>
<!-- Vegetation (green) -->
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<!-- Legend -->
<g transform="translate(410, 200)">
<rect x="0" y="0" width="12" height="12" fill="#3498db" opacity="0.4"/>
<text x="18" y="10" fill="#666" font-size="9">sky</text>
<rect x="45" y="0" width="12" height="12" fill="#95a5a6" opacity="0.5"/>
<text x="63" y="10" fill="#666" font-size="9">building</text>
<rect x="110" y="0" width="12" height="12" fill="#2c3e50" opacity="0.4"/>
<text x="128" y="10" fill="#666" font-size="9">road</text>
<rect x="160" y="0" width="12" height="12" fill="#e74c3c" opacity="0.5"/>
<text x="178" y="10" fill="#666" font-size="9">car</text>
<rect x="200" y="0" width="12" height="12" fill="#27ae60" opacity="0.5"/>
<text x="218" y="10" fill="#666" font-size="9">person</text>
</g>
<text x="350" y="233" fill="#666" font-size="9" text-anchor="middle">Every pixel gets a class label. No instance distinction — all cars share the same label.</text>
</svg>
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