皆さん、こんにちは。日本のコミュニティの皆さまへ。 TomTomは、日本の国土交通省（MLIT）が公開するProject PLATEAUのオープン3D都市モデルデータセット（CC BY 4.0 / ODbL互換ライセンス）を活用し、OpenStreetMapの建物に不足している高さ情報を自動的に追加するプロセスに取り組んでいます。
**概要** このプロセスでは、幾何学的コンフレーション（空間照合）を使用して、PLATEAUの建物フットプリントを既存のOSM建物と空間的にマッチングします。オーバーラップ率、面積比較、ジオメトリの妥当性チェックなど、複数の検証を行います。マッチした建物のうち、height=* タグがまだ付与されていないものだけが更新対象となります。 既存のタグが上書きされることはなく、建物のジオメトリが変更されたり、新しい建物が作成されることもありません。 **パイロット計画** 今週、TTmechanicalupdates OSMアカウントを使用して、大阪で小規模なテストを実施する予定です。問題が見つかった場合は、チェンジセットをリバートします。パイロットが成功した場合、大阪全域に対してプロセスを拡大する予定です。 **今後のステップ** コミュニティへの相談 — フィードバック、ご質問、ご提案を歓迎します。このプロセスがコミュニティの期待に沿うものであることを確認したいと考えています。 OSM Wikiドキュメント — Organised Editing/Activities/TomTom/Global - Building Height Imports/Japan - PLATEAU Building Height Enrichment - OpenStreetMap Wiki<https://wiki.openstreetmap.org/wiki/Organised_Editing/Activities/TomTom/Global_-_Building_Height_Imports/Japan_-_PLATEAU_Building_Height_Enrichment> 皆さまのご意見をお待ちしております。 よろしくお願いいたします。 ==================== Hi everyone in the Japanese community TomTom is working on an automated process to add missing building heights to OpenStreetMap using Japan's Project PLATEAU open 3D city model datasets (published by MLIT under CC BY 4.0 / ODbL-compatible terms). **What we are doing** Our process uses geometric conflation to spatially match PLATEAU building footprints against existing OSM buildings, using several validation checks including overlap percentage, area ratio comparison, and geometry validity. Only buildings that match and do not already have a height=* tag will be updated. No existing tags will be overwritten, no building geometries will be modified, and no new buildings will be created. **Pilot plan** We are planning to run a small-scale test in Osaka this week using the TTmechanicalupdates OSM account. If any issues are found, we will revert the changesets. If the pilot is successful, we plan to expand the process to cover the entire Osaka area. **Next steps** Community consultation — All feedback, questions, and suggestions are very welcome. We want to make sure this process aligns with community expectations. OSM Wiki documentation — Organised Editing/Activities/TomTom/Global - Building Height Imports/Japan - PLATEAU Building Height Enrichment - OpenStreetMap Wiki<https://wiki.openstreetmap.org/wiki/Organised_Editing/Activities/TomTom/Global_-_Building_Height_Imports/Japan_-_PLATEAU_Building_Height_Enrichment> We look forward to hearing your thoughts. Best regards, Can Ünen * Can Ünen, Ph.D. / Manager I - Partner Development / MAPS I/O - Sourcing, Community & Partnerships / [email protected]<mailto:[email protected]> / www.tomtom.com<http://www.tomtom.com/mep> This email message and any attachments are for the sole use of the intended recipient(s) and may contain information that is proprietary to TomTom and/or its affiliates or otherwise confidential or legally privileged. If you have received this message in error, please notify the sender by reply, and delete all copies of this message and any attachments. If you are the intended recipient, you may use the information contained in this message and any files attached to this message only as authorised by TomTom. Any unauthorised use, dissemination or disclosure of this message or its attachments is strictly prohibited. The contents of this e-mail are not to be considered binding upon TomTom. This email message and any attachments are for the sole use of the intended recipient(s) and may contain information that is proprietary to TomTom and/or its affiliates or otherwise confidential or legally privileged. If you have received this message in error, please notify the sender by reply, and delete all copies of this message and any attachments. If you are the intended recipient, you may use the information contained in this message and any files attached to this message only as authorized by TomTom. Any unauthorized use, dissemination, or disclosure of this message or its attachments is strictly prohibited. The contents of this email are not to be considered binding upon TomTom.
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