# 시간↔측점 대응표 — 재생 기준을 '시간'에서 '스테이션(측점)'으로 전환하기 위한 색인 구조

<figure>
<svg viewBox="0 0 1080 470" role="img" aria-label="시간↔측점 대응표 도식" font-family="Malgun Gothic, sans-serif">
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<!-- 상단: 영상 프레임 -->
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<text x="540" y="63" text-anchor="middle" font-size="21" font-weight="bold" fill="#ffffff">영상 프레임 (사진 1장)</text>
<text x="540" y="90" text-anchor="middle" font-size="15" fill="#e8e8e8">(번호 + 드론 GPS 기록)</text>
<!-- 좌: 시간 계산 -->
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<text x="280" y="215" text-anchor="middle" font-size="21" font-weight="bold" fill="#ffffff">프레임번호 ÷ fps = 시간</text>
<text x="280" y="243" text-anchor="middle" font-size="15" fill="#dbe9f7">예: 5760번 ÷ 30 = 192초</text>
<!-- 우: 측점 계산 -->
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<text x="800" y="215" text-anchor="middle" font-size="21" font-weight="bold" fill="#ffffff">GPS → 측점 (선로에 투영)</text>
<text x="800" y="243" text-anchor="middle" font-size="15" fill="#e6f2dc">예: 위도·경도 → 160k130</text>
<!-- 하단: 대응표 완성 -->
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<text x="540" y="375" text-anchor="middle" font-size="21" font-weight="bold" fill="#ffffff">시간 ↔ 측점 대응표 완성!</text>
<text x="540" y="403" text-anchor="middle" font-size="15" fill="#f7ecd0">"192초 = 160k130" 처럼 서로 변환 가능</text>
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