# NavSea Strict Audit Summary

## Scope

- Compare page: `http://192.168.200.184/newpec/navsea-compare-karatsu-20nm.html`
- Compare version: `20nm-r7-20260331-2044`
- Backend render audit: `/root/sourceserver/pbf/NavSea_Original_vs_Delivery_Render_Audit_Karatsu_20nm_2026-03-31.r7.json`

## Visual Audit

- changed pixels: `230361` / `256000`
- changed ratio: `0.899848`
- mean abs rgb: `[27.394, 28.0012, 51.399]`
- rms rgb: `[42.1614, 40.8117, 66.9404]`
- left crop: `[0, 150, 640, 550]`
- right crop: `[640, 150, 1280, 550]`

Artifacts:

- `/root/sourceserver/pbf/report/strict_audit/compare_full.png`
- `/root/sourceserver/pbf/report/strict_audit/compare_left.png`
- `/root/sourceserver/pbf/report/strict_audit/compare_right.png`
- `/root/sourceserver/pbf/report/strict_audit/compare_diff.png`

## Hotspot AOI Audit

### 西南灯塔区

- id: `southwest_lighthouse_cluster`
- notes: `左下角远处灯塔与标记点，用来校验远处 symbol 表现。`
- backend focus: `['p航路標識群', 'p陸上構造物']`
- changed pixels: `10501` / `10800`
- changed ratio: `0.972315`
- mean abs rgb: `[35.1766, 36.7016, 83.6827]`
- pane box norm: `[0.0, 0.7, 0.14, 1.0]`
- pane box pixels: `[0, 280, 90, 400]`
- left image: `/root/sourceserver/pbf/report/strict_audit/hotspots/southwest_lighthouse_cluster_left.png`
- right image: `/root/sourceserver/pbf/report/strict_audit/hotspots/southwest_lighthouse_cluster_right.png`
- diff image: `/root/sourceserver/pbf/report/strict_audit/hotspots/southwest_lighthouse_cluster_diff.png`

### 高岛主港航标区

- id: `takashima_main_harbor_marks`
- notes: `主港口灯塔、红绿标识、近岸障碍标记。`
- backend focus: `['p航路標識群', 'safety_icon_missing', 'text_missing_in_engineering']`
- changed pixels: `9217` / `11760`
- changed ratio: `0.783759`
- mean abs rgb: `[25.8832, 26.3819, 35.8165]`
- pane box norm: `[0.34, 0.05, 0.57, 0.25]`
- pane box pixels: `[218, 20, 365, 100]`
- left image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_main_harbor_marks_left.png`
- right image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_main_harbor_marks_right.png`
- diff image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_main_harbor_marks_diff.png`

### 高岛近岸碍航与鱼礁区

- id: `takashima_inner_nearshore_hazards`
- notes: `近岸鱼礁、碍航点、灯塔与小灯混合区。`
- backend focus: `['p投錨注意障害物', 'p航行危険障害物', 'p航路標識群']`
- changed pixels: `5820` / `7820`
- changed ratio: `0.744246`
- mean abs rgb: `[26.0925, 28.3926, 32.3252]`
- pane box norm: `[0.44, 0.14, 0.62, 0.31]`
- pane box pixels: `[282, 56, 397, 124]`
- left image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_inner_nearshore_hazards_left.png`
- right image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_inner_nearshore_hazards_right.png`
- diff image: `/root/sourceserver/pbf/report/strict_audit/hotspots/takashima_inner_nearshore_hazards_diff.png`

### 东侧防波堤灯台区

- id: `east_breakwater_marks`
- notes: `右上沿岸的防波堤灯台与港口标记。`
- backend focus: `['p航路標識群', 'safety_icon_missing']`
- changed pixels: `4310` / `6976`
- changed ratio: `0.617833`
- mean abs rgb: `[14.5257, 14.9903, 20.7008]`
- pane box norm: `[0.83, 0.0, 1.0, 0.16]`
- pane box pixels: `[531, 0, 640, 64]`
- left image: `/root/sourceserver/pbf/report/strict_audit/hotspots/east_breakwater_marks_left.png`
- right image: `/root/sourceserver/pbf/report/strict_audit/hotspots/east_breakwater_marks_right.png`
- diff image: `/root/sourceserver/pbf/report/strict_audit/hotspots/east_breakwater_marks_diff.png`

## Backend Render Audit

- original feature instances: `258317`
- delivery feature instances: `258317`
- result count: `516634`

Status counts:

- `extra_in_engineering`: `258317`
- `missing_in_engineering`: `258317`

Top annotation issues:

- `extra_text_in_engineering` | `bathymetry_line` | `24168`
- `text_missing_in_engineering` | `L海底地形` | `24168`
- `extra_text_in_engineering` | `depth_contour` | `11929`
- `text_missing_in_engineering` | `L等深線` | `11929`
- `extra_text_in_engineering` | `seabed_text_point` | `4499`
- `text_missing_in_engineering` | `p底質` | `4499`
- `extra_text_in_engineering` | `navigation_marks` | `1516`
- `text_missing_in_engineering` | `p航路標識群` | `1516`
- `text_missing_in_engineering` | `p地名` | `1444`
- `extra_text_in_engineering` | `place_label_sea` | `1444`

Top style semantic issues:

- `depth_numeric_missing` | `L海底地形` | `24168`
- `depth_numeric_missing` | `L等深線` | `11929`
- `safety_icon_missing` | `p航路標識群` | `1885`
- `depth_numeric_missing` | `L概略等深線` | `350`
- `clearance_numeric_missing` | `p高さ制限` | `33`

## Interpretation

- This report intentionally puts browser-rendered visual output and backend render-audit summary in one place.
- If the browser screenshot improves but backend counts do not, the current backend audit is likely blind to a browser/runtime issue such as sprite resolution.