This guide is a translation of my previous diary written in Chinese. The motivation for developing this method is trying to find a way to map vast areas of forests with minimum human effort.

Methodology

The OpenStreetMap data is based on nodes and vector ways. Manual mapping requires a mapper to put nodes on the satellite pictures and connect nodes by mouse clicking, which is a time-consuming process. This guide proposes a software-assisted workflow to ease the mapping process, it includes the following steps.

1. Raster image acquiring and segmentation
2. Raster image preparation
3. Vectorization
4. Mapping to OSM

Raster image acquiring and segmentation

Software used in this step:

• JOSM
• Fiji (Fiji Is Just ImageJ)

Install the JOSM plugin importvec and restart JOSM, Download the map data of the region of interest (ROI), choose a satellite source and download the image. Hide the data layer and take a snapshot of the satellite image on (ROI). Save the snapshot as JPG or PNG file.

Open the snapshot image in Fiji. Turn to the menu: Plugins, Segmentation, Trainable Weka Segmentation. A new Weka window will pop up containing the image. On the right side of the window, there are two preset classes 1 and 2 representing features to be recognized in the image. Create more if needed with create new class button on the left side, and in settings button, you can rename the preset class 1 and 2 to meaningful names to avoid mistakes made by yourself.

Now you can use your mouse left click and hold to draw a curve on the image and click “add to class” button to tag the feature and repeat to create several items. Double-click an item to remove it if you tag it wrong. You don’t have to precisely draw along the edge of the feature, just draw a random curve inside it. When you have collected several items, you can click train classifier in the top-left corner to, well, train the classifier.

… See full entry

After having had my finds reported on in their online newspaper last week, the Kilkenny People today had a half-page article reporting about my discovery of three crannógs in Co. Cavan.

This time, the journalist did a bit of extra research. Last time, when I discovered the two enclosures (as mentioned in this article), they used my press release almost verbatim. It must be newsworthy, if they put extra effort in. I wouldn’t know, I’m biased. :P

I sent them the press release about two weeks ago mentioning OSM as often as possible, because there is still a lot of ignorance in the general public about it. So, I will definitely keep on reaching out to the press every time I discover something, just to hammer the message in about OpenStreetMap.

… See full entry

MAPEAMENTO de COMUNIDADES no Brasil

Apresentação: Tulio Sala de Conferência: https://meet.jit.si/umbraosm Presentation: Tulio Conference room: https://meet.jit.si/umbraosm

Data: 29/11/2022 - Hora: 19:00hs

https://osmcal.org/event/1737/

Apoio: UMBRAOSM - WWW.UMBRAOSM.COM.BR

Workshop Mapeamento Participativo e Cartografico Social 2022 / Workshop Participatory Mapping and Social Cartography 2022 -

14th December 18:00 – 20:00 Apoio:

WORKSHOP MAPEAMENTO PARTICIPATIVO E CARTOGRAFIA SOCIAL 2022 WORKSHOP PARTICIPATORY MAPPING AND SOCIAL CARTOGRAPHY 2022

APOIO:

UMBRAOSM - WWW.UMBRAOSM.COM.BR OSMAND - WWW.OSMAND.NET

PROGRAMA - SCHEDULE

14 DEC 22 — DAY 2

18h - ABERTURA / OPENING

Raquel Dezidério Souto, IVIDES.org e GeoCart-UFRJ,

Paulo Márcio Leal de Menezes e Manoel do Couto Fernandes, GeoCart-UFRJ

18h10 - PALESTRA/ KEYNOTE - 1

Experiências de mapeamento participativo no INPE

Participatory mapping experiences at INPE

Jocilene Dantas Barros, INPE

18h35 - PALESTRA/ KEYNOTE - 2

O mapeamento participativo como processo de visibilidade

Participatory mapping as a visibility process

Tatiana de Sá Freire Ferreira, GeoCart-UFRJ

19h - PALESTRA/ KEYNOTE - 3

Uso do Mapeamento participativo como estratégia

… See full entry

Workshop Mapeamento Participativo e Cartografico Social 2022 / Workshop Participatory Mapping and Social Cartography 2022

7th December 18:00 – 20:00 Apoio:

UMBRAOSM - www.umbraosm.com.br OsmAnd - https://osmand.net/

Rio de Janeiro, Rio de Janeiro, Brazil rio de janeiro

7th December 18:00 – 20:00 Apoio:

UMBRAOSM - www.umbraosm.com.br OsmAnd - https://osmand.net/

WORKSHOP MAPEAMENTO PARTICIPATIVO E CARTOGRAFIA SOCIAL 2022 WORKSHOP PARTICIPATORY MAPPING AND SOCIAL CARTOGRAPHY 2022

PROGRAMA - SCHEDULE

07 DEC 22 — DAY 1

18h - ABERTURA / OPENING

Raquel Dezidério Souto, IVIDES.org e GeoCart-UFRJ

Paulo Márcio Leal de Menezes, GeoCart-UFRJ

18h10 - PALESTRA/ KEYNOTE - 1

Mapeamento com OpenStreetMap

Mapping with OpenStreetMap

Raquel Dezidério Souto, IVIDES.org e GeoCart-UFRJ

18h35 - PALESTRA/ KEYNOTE - 2

Mapeamento participativo aplicado ao planejamento urbano

Participatory mapping applied to urban planning

Carolina Carvalho, Comunidades Vivas

19h - PALESTRA/ KEYNOTE - 3

… See full entry

The mapping of AEDs in Flanders is of poor quality. These last years I improved and corrected it. Mapping AEDs without mapillary is setting death traps. For this conviction I received insults, stupid comments and proposals. We were a few hundred AEDs away from total coverage. I wanted to update OSM with notes asking for mapillary from the monthly official list. The community did not want this. But that is not all.
When I have mapped an AED perfectly the mutilation begins. They snap it to the wall, they add tags that they cannot explain. They make the mapillary key unusable. By doing so, they make my maintenance work difficult. This is also sad for the few good men who mapped well.

For those who have been following my daily progress on Mastodon, here is the summary.

Data Collection

• StreetComplete: each quest
• OsmAnd: each POI
• Notes: each note
• SOTM22: each talk
• droneImages: each image
• OSMTrace: each trace
• WikiData: each image for WikiData
• vespucci: each changeset
• idEditor: each changeset
• JOSM: each changeset

First 50 days

During the first 50 days I was mainly doing the challenge remotely, which can seen quite well that a lot of mobile apps are present.

Second 50 days

… See full entry

General

Vías Agrarias

Me estoy encargando de mapear todas las vías agrarias, caminos o accesos a fincas de Arcones, Segovia. Literalmente no había ninguna mapeada. Me estoy basando entre el PNOA y el Catastro y conocimientos propios porque las ortofotos de la zona ya tienen un tiempo.

Cambio en la etiqueta de los barrios

Los barrios pertenecientes a Arcones estaban indicados como aldeas independientes (place=hamlet). Según la wiki las divisiones de un pueblo (place=village) deben ser indicadas como place=neighbourhood y así lo he hecho con los nodos. Los he añadido a la relación del límite como subarea cada uno.

La Mata y Castillejo

He añadido o corregido edificios que estaban fusionados en uno solo. He añadido diversos muros entre casas y fincas y especificado el uso de la tierra en varios casos añadiendo prados, tierras de cultivo, huertos y zonas de césped.

Arcones

He añadido mobiliario urbano en la Plaza Mayor y detallado algunos edificios públicos con sus nombres. Antes de esto ya añadí una acera imprescindible para poder enrutar a pie y otras no tan necesarias junto con sus cruces de peatones. Aún me falta por especificar en condiciones el ayuntamiento y otros edificios de interés como bares y tiendas.

It’s time to review a little of what I did during this year, one of the main was to participate in SToM22 in Florence you can read more about it here during this year I also learned a lot and I could help in the importation of the buildings in Fortaleza, and without a doubt this year was the year that I used JOSM the most even against my will.

It has been a big challenge trying to keep me motivated to continue with my work in OSM I have been dedicating myself day and night and it is hard to stay motivated all this time, during many days this year I thought about giving up and I feel that many of you who are reading me may have already felt like that but our work is like ants that in the end added up we make a big difference! and I really feel that every day OSM has received the recognition it deserves.

Statistics

• 214.398 buildings mapped
• 19.811 Km of roads mapped
• 21.957 Places of interest mapped
• 6.446 Km of rivers mapped

Projects

This year I tried to organize myself better and diversify my contributions by not only focusing on my state but on corrections in Brazil as a whole but I ended up being called to contribute to the import of buildings in Fortaleza which has been a pleasure.

Schools in Tocatins

… See full entry

Está na hora de revisar um pouco do que eu fiz durante esse ano, uma das principais foi poder participar do SToM22 em Florença você pode ler mais de como foi aqui durante esse ano tambem aprendi muito e pude ajudar na importação dos edifícios em Fortaleza, e sem duvida esse ano foi o que eu mais usei o JOSM mesmo contra minha vontade.

Tem sido um grande desafio tentar me manter motivado para continuar com meu trabalho no OSM tenho me dedicado dia e noite e é difícil se manter motivado todo esse tempo, durante muitos dias desse ano pensei em desistir e sinto que muitos de vocês que estão me lendo talvez já tenham sentindo assim mas nosso trabalho é como de formigas que no final somado fazemos uma grande diferença! e realmente sinto que a cada dia o OSM tem recebido o reconhecimento que merece.

Estatísticas

• 214.398 Edifícios mapeados
• 19.811 Km de vias mapeadas
• 21.957 Pontos de interesses mapeados
• 6.446 Km de rios mapeados

Projetos

Esse ano tentei me organizar melhor e diversificar minhas contribuições não somente focando no meu estado mas em correções no Brasil como todo mas acabei sendo chamado para poder contribuir com a importação dos edifícios em Fortaleza o que tem sido um prazer.

Escolas no Tocatins

… See full entry

Ano passado decidi fazer esse desafio que estava abandonado no site do MapRoulette e consegui atingir um avanço significativo. Falta pouco para completar o desafio, relativo à adição de edifícios rurais no município de Igarassu, PE. Acredito que ainda em 2022 estará completo.

I gathered some statistics about usage of the website and tiles in 2022Q3.

I looked at total tile.osm.org usage, tile.osm.org usage from osm.org itself, osm.org visits, and osm.org unique visitors.

Here’s the data for the top 20 countries.

country	osm.org tile requests	total tile requests	Website visits	Website unique Visitors
DE	17.79%	7.78%	8.27%	7.98%
RU	12.23%	8.49%	2.47%	2.43%
US	8.72%	9.22%	13.11%	13.56%
PL	7.69%	4.99%	3.09%	2.80%
GB	4.85%	3.68%	4.42%	4.42%
FR	4.79%	7.00%	3.91%	3.94%
NL	3.62%	3.31%	2.17%	2.09%
IT	3.49%	3.46%	4.74%	4.86%
IN	2.64%	2.66%	3.67%	3.16%
CN	2.62%	0.79%	2.65%	2.72%
AT	2.03%	0.89%	0.98%	0.91%
UA	1.78%	1.98%	1.20%	1.21%
CH	1.41%	0.71%	0.83%	0.82%
CA	1.29%	1.59%	1.36%	1.39%
BE	1.29%	1.06%	1.10%	1.03%
ES	1.27%	2.41%	2.32%	2.39%
JP	1.10%	1.54%	1.74%	1.71%
AU	1.09%	0.92%	0.88%	0.82%
SE	0.91%	0.95%	0.87%	0.88%
FI	0.89%	0.74%	0.74%	0.71%

I’ve put the full data into a gist on github

The Goal

While working through some edits in Indonesia I noticed object with the key “nama”. A quick search revealed that this in Indonesian for “name” and the objects can very likely be modified to use the standard English. I wondered, how common is this? Is it easy enough to track down?

The Plan

As a test run I picked 4 tags: name, building, source, type. These show up in TagInfo in abundance and I’m sure there are lots of other good candidates.

Next step is to get usable translations. It turns out Google Sheets has a GOOGLETRANSLATE function that takes a word and will return translations into various languages. I pulled in the two letter language code list and built my sheet. After eliminating all languages that Google Translate didn’t support and all languages with non Latin characters I was left with ~80 languages to check.

The last step was to pull usage information. Fortunately for me TagInfo has an exceptionally well documented REST API. Fifty lines of C# later and I had my results.

The Results

Clicking through a few of these in TagInfo reveals some more likely candidates for cleanup.

… See full entry

Gestión popular de riesgos de desastres y OpenStreetMap LATAM 2022

El comité organizador de la conferencia internacional sobre Gestión popular de riesgos de desastres y OpenStreetMap LATAM 2022 se complace en anunciar la publicación del programa en el sitio web del evento.

La programación incluye actividades como charlas, paneles, talleres, visitas y mapeo.

Fecha del evento

Del 24 de Noviembre al 27 de Noviembre de 2022.

Lugar

Facultad de Ciencias Sociales de la Universidad Nacional Mayor de San Marcos, en Lima, Perú.

I’ve been working with the Mapillary team through my job at Kaart. In the process, I’ve been stepping up my Mapillary contributions quite a bit. Here’s a recent capture on the way back from an afternoon of skiing!

source: Mapillary

A recent-ish new feature (on iOS only for now) is Mapillary Missions. Missions focus on specific areas where there’s particular benefit to OSM in capturing new(er) imagery, for example because there’s potentially high POI density, or the existing images are stale. Individual missions are small, usually around 300-400ft along one street. Here’s a few in my area:

… See full entry

De izquierda a derecha y de arriba a abajo, bustos conmemorativos de José María Martín Carpena, Eduardo Ocón, Alfonso Canales, Rubén Darío, Rockberto, José Moreno Carbonero, Juan Temboury, Gálvez Ginachero y José Rizal. Fuente: trabajo propio (CC BY-SA 4.0), imágenes individuales disponibles en Wikimedia Commons.

En una entrada anterior sobre la inauguración de una placa conmemorativa dedicada a Anita Delgado, comentaba mi intención de trabajar en la incorporación al mapa de OpenStreetMap de otros pequeños monumentos de este tipo, principalmente placas y bustos.

… See full entry

L’impianto idroelettrico è situato a nord di Tolmezzo, non lontano dall’abitato di Ilegio lungo il rio Tramba. La centrale di Tramba è una centrale idroelettrica entrata in funzione nel 1957 che sfrutta un bacino artificiale di 7.550 m3 ricavato mediante uno sbarramento in calcestruzzo. Il salto utile è pari a 96,9 metri. La centrale si sviluppa su un unico piano, con accesso alla Sala Macchine direttamente dal piazzale esterno. Il gruppo turbina generatore, di tipo Francis ad asse orizzontale, produce energia elettrica alla tensione di 0,4 kV che viene trasportata, tramite cavi al trasformatore e da questi alla rete MT a 20 kV.

Impianto di Tramba

Dettagli tecnici: Ubicazione: Via Navarlons, 5 - loc. Tramba, 33028 TOLMEZZO (UD) Anno di costruzione: 1956 Anno di entrata in esercizio: 1957 Acque utilizzate: Rio Tramba Tipo di impianto: Acqua fluente Portata media di concessione: 0,255 m3/s Salto nominale di concessione: 96,9 m

Some time ago we prepared a website that allows you to easily add AED (Automatic Defibrillators) locations to the OSM database. The website is available at: https://openaedmap.org We would like as many people as possible to use it. That’s why we want to remove as many barriers to using this website as possible.

We would like to ask for help in translating into other languages. Translation is done using: Weblate

If you want to add new language beside adding translations here create an issue in GitHub https://github.com/openstreetmap-polska/openaedmap-frontend/issues site uses a list of language to display in navbar.

前言

虽然Openstreetmap是不面向渲染绘图，但日常看到地图上欧洲一片绿意盎然而东亚地区即使在胡焕庸线以东也是一片空白，实在是有碍观瞻。本地已有的大片自然地貌有国际友人协助开荒，但毕竟不是长久之计。然则大陆地区绘图者寥寥，很难做到大面积开荒，如能使用一些半自动化工具或可以加快开荒速度。故此摸索了一套工具链，希望能有所帮助。

方法

Openstreetmap的数据是矢量路径，手动绘制的过程是以卫星和航拍图为底图进行路径描摹后修整，这一过程最费时费力的是照片判读和路径描摹。本文提出的方法就是尝试用自动化/半自动化的方式减轻这个过程的劳动强度，缩短工时。本方法包括以下几个流程

1. 图像获取和自动化识别
2. 位图预处理
3. 矢量化
4. 绘图

图像获取和自动化识别

使用的工具

• JOSM

• Fiji (Fiji Is Just ImageJ)

JOSM使用方法不赘述。选择合适的卫星图做为底图，隐藏数据层后截图获得位图(raster image)保存。

在Fiji中打开图片，使用Fiji提供的plugin, Segmentation, Trainable Weka Segmentation工具进行图像识别。启动该工具后，先按需建立分类(class)，预设有2个分类class 1和class 2。如图像中包含树林，河流，村庄和农田，则需新建两个分类，再去setting里将class 1, 2更名（不更名也没关系，但有明确含义的名字可以避免自己犯错）。用鼠标按住左键画任意曲线的方式在卫星图中指示特征后，点击右侧分类的按钮将曲线加入该类的列表，如有分类失误可以双击列表项移除。指示特征不必精确画出边界，在特征范围内随意标注既可。每个分类都添加若干条目后，点击左上的train classifier进行分类器训练。计算结束后会在图片上叠加用不同颜色标识的分类结果，在这个阶段可以评估分类器有效性，对分类识别失败的地方进行修正标注后重新训练分类器，直到结果满意，在这个阶段不必追求严格精准，因为精准的曲线需要大量控制点描述，而JOSM限制单一路径控制点不能超过2000个，后序的矢量化处理也会精简掉大量控制点。在软件界面点击create result获取结果图片。

位图预处理

使用的工具

• Fiji (Fiji Is Just ImageJ)

使用Weka Segmentation获得的结果图片包含多个分类，以上述四个分类为例，各个分类的像素点赋值为0, 1, 2和3，下一步是选出需要的分类。使用Fiji的内嵌功能Image, Adjust, Threshold，在弹出的对话框中，滑动上下两个阈值滑块，选出分类的像素点赋值，同时图片中会显示出当前阈值选区。选好后点击Apply应用阈值选择结果。

通常在此步获得的图片还有大量孤立小像素点，本着抓大放小的原则可以去除掉。通过执行N次Process, Binary, Erode功能腐蚀掉所有图形的边界吃掉小点，再执行N次Process, Binary, Dilate将存活的图形膨胀回来。此时得到的边界当然和最初识别的边界存在差异，但前述已说过，只要偏差不是太离谱，误差都应该在可控范围内。另外建议使用Binary下的fill holes功能避免区域嵌套，导入JOSM以后还得处理复合多边形，徒增工作量。如果不想保留贴边的区域，可以用Flood Fill Tool把黑区填充成白色，如果边缘部分和想保留的部分有连接，可以使用Process, Binary, Watershed功能把图形分割成小块再填充掉不要的部分，用Process, Binary, Close~功能把Watershed的切分拼回去。此时已完成位图的预处理，File, Save as PNG保存后就可以进入下一步矢量化了。

矢量化

使用的工具

• inkscape

将预处理后的位图导入inkscape，使用Path, Trace Bitmap功能，Detection Mode选默认的Brightness cutoff，选中位图后Apply获得矢量路径。矢量路径是叠加在位图上的，拖动一下就可以看到结果。路径内部是填充的，可以在Object, Fill and Stroke功能里取消填充，绘制路径，得到图形干净的边界线。然后保存为svg格式的矢量图就可以了。

绘图

使用的工具

• JOSM

• JOSM插件importvec

安装importvec后，JOSM可以打开svg矢量图，导入svg后会问你比例，随便吧，反正也不知道具体是多少，需要缩放调整的。

… See full entry

I’m still “obsessing” about crannógs. There are now 205 mapped in Ireland and the UK with site_type=crannog. The timing is unfortunate with the proposal about changing site_type=crannog to archaeological_site pending, but I have been delayed for so long; I did not want to wait any longer. I’m adding disclaimers to every video to keep watching out for tag changes…

Five parts of a mini series about crannógs are planned, two of them have been published on my channel already, one will go public next Saturday.

I have created a page on the wiki mentioning some of the sources for finding crannógs, and I’m basically covering all the options in these videos.

• Mapping Kilkenny’s only crannóg
• Mapping a Time Team Dig - Llangorse Crannog (Wales)
• Mapping a crannóg found in the School’s Collection (duchas.ie) (Co. Mayo)
• Mapping a crannóg from excavations.ie (Co. Westmeath)
• Mapping a crannóg from WikiCommons (this will most likely be an example from Scotland, because there are hardly any photographs from Ireland)

I’m hoping to gather some interest from historians and archaeologists in OpenStreetMap with this. Long shot…