mainly in charge of forestry engineering (mountain control, forest roads) オープンデータに精通し 2018年から2023年3月まで 道庁のオープンデータ担当 Expert in open data and in charge of open data for the Hokkaido government from 2018 to March 2023. Kouichi kita
laser surveying is a technique where lasers are emitted from aircraft or drones to measure the height of buildings and the ground surface. ※ When measuring at an altitude of 2000m with a scanning angle of 20 degrees to the left and right, the scanning width is 700m.
is used to create a 3D model (ORIGINAL) that includes trees and buildings. From this model, a 3D model (GROUND) of the ground surface is generated by removing the above-ground objects. Then, a 3D model (GRID) is created by aligning points at regular intervals within the ground model.
results of aerial laser surveying, micro-topographic analysis of collapsed areas, Sediment runoff, and other features was conducted using orthoimages and contour maps. Sediment runoff
aerial laser surveying for the purpose of river management, forest management, and preparation for mountainous disasters. 北海道庁が平成18年(2006年）から令和4年（2022）までに 行った航空レーザー測量の範囲
a license that allows anyone to freely use it for secondary purposes such as modification, editing, and redistribution. ▪インターネット等を通じて誰でも無償で利用できるデータ Data that is available to anyone free of charge through the internet or other means. ▪機械判読に適したデータ Data suitable for machine reading. Definition of "Open Data "
that allows anyone to freely use it for secondary purposes such as modification, editing, and redistribution. ▪インターネット等を通じて誰でも無償で利用できるデータ Data that is available to anyone free of charge through the internet or other means. ▪機械判読に適したデータ Data suitable for machine reading. 25 「オープンデータ」の定義 Definition of "Open Data "
promotion of open data has spread The push for open data in Japan began after the Great East Japan Earthquake in 2011. During the disaster, amidst the exchange of various information within the country, the lack of access to accurate information led to confusion at the scene. Due to the lack of open data, it was not possible to utilize it for secondary purposes. Efforts were made by the private sector to disseminate disaster-related information such as evacuation centers. The momentum for open data initiatives is growing domestically. 27
release information held by governments and local authorities as open data, ensuring that people who want to utilize the information can access it anytime.
open data from Shizuoka Prefecture with locally sourced data that was released as open data by private entities, swift disaster response was carried out. 資料：熱海市伊豆山土石流災害における点群 データ活用（静岡県）から引用 官民がデータを共有し、 危険箇所を迅速に可視化した The government and private sector share data and quickly visualize areas of danger.
aerial LiDAR data released by prefectures and other entities to create and publish various digital maps. 現在は 栃木県、兵庫県、高知県の データを試験公開中 Currently, data from Tochigi, Hyogo, and Kochi prefectures is being test-published.
platform implemented by the Ministry of Land, Infrastructure, Transport, and Tourism, aerial LiDAR data acquired by local governments is also being utilized.
of nationwide aerial LiDAR surveys through the "Public Survey Implementation Information" provided by the Geospatial Information Authority of Japan (GSI). https://psgsv2.gsi.go.jp/kouhyou/Kouhyou_KoukyouSokuryou/Kensaku10.aspx
from the national government and municipalities should be publicly released as open data. To achieve this, it is necessary to have the support and voices of everyone. 本来は、道庁だけでなく国や市町村の データもオープンデータとして公開されるべき これが公開されるためには、 みなさんからの声が必要です
data released by the Hokkaido Government to its fullest extent! 北海道庁が公開する 航空レーザー測量データについて 是非ご活用ください！ 「北海道オープンデータポータル」で検索！ Search on the "Hokkaido Open Data Portal"!
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