Support Public Lab Today! For the last twelve years, Public Lab has hosted Mapknitter.org so th...
Public Lab is an open community which collaboratively develops accessible, open source, Do-It-Yourself technologies for investigating local environmental health and justice issues.
| 40 CURRENT | jmacha |
August 02, 2022 03:40
| over 2 years ago
For the last twelve years, Public Lab has hosted Mapknitter.org so that people everywhere can make maps from their aerial photos. Unfortunately, current circumstances have led us to scale back and take certain services offline. MapKnitter.org will go offline August 15, 2022. The MapKnitter platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for MapKnitter are approximately $1000 per month. We are doing our best to sustain programming and support for our community, and we need your help. Thank you for being part of our community. We can't wait to be back online with you. Support Public Lab by making a donation today. Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 39 | jmacha |
August 02, 2022 03:39
| over 2 years ago
For the last twelve years, Public Lab has hosted Mapknitter.org so that people everywhere can make maps from their aerial photos. Unfortunately, current circumstances have led us to scale back and take certain services offline. MapKnitter.org will go offline Augusg 15, 2022. The MapKnitter platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for MapKnitter are approximately $1000 per month. We are doing our best to sustain programming and support for our community, and we need your help. Thank you for being part of our community. We can't wait to be back online with you. Support Public Lab by making a donation today. Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 38 | liz |
July 27, 2022 21:46
| over 2 years ago
The MapKnitter platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for MapKnitter are approximately $1000 per month.
For the last twelve years, Public Lab has hosted Mapknitter.org so that people everywhere can make maps from their aerial photos. Unfortunately, current circumstances have led us to scale back and take certain services offline. We are doing our best to sustain programming and support for our community. And we need your help. Support Public Lab by making a donation today.
Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 37 | liz |
July 27, 2022 21:43
| over 2 years ago
The MapKnitter platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for MapKnitter are approximately $1000 per month.
For the last twelve years, Public Lab has hosted Mapknitter.org so that people everywhere can make maps from their aerial photos. Unfortunately, current circumstances have led us to scale back and take certain services offline. We are doing our best to sustain programming and support for our community. And we need your help. [Support Public Lab today making a donation today.](https://secure.lglforms.com/form_engine/s/zIbQWRjJiBYCVwCN6tXIHw)
Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 36 | liz |
July 27, 2022 21:43
| over 2 years ago
The MapKnitter platform runs on a combination of volunteer and paid labor by the many people that build, maintain, and operate it via Public Lab. This is an effective combination thanks to the culture of Public Lab's Coding Community. Public Lab's web ecosystem, including PublicLab.org, MapKnitter.org, SpectralWorkbench.org, Infragram.org and associated projects, takes 20 hours a week from three Code Coordinators and our sysadmin. While cost effective, it is not free. Web hosting and server costs for MapKnitter are approximately $1000 per month.
For the last twelve years, Public Lab has hosted Mapknitter.org so that people everywhere can make maps from their aerial photos. Unfortunately, current circumstances have led us to scale back and take certain services offline. We are doing our best to sustain programming and support for our community. And we need your help. (Support Public Lab today making a donation today.)[https://secure.lglforms.com/form_engine/s/zIbQWRjJiBYCVwCN6tXIHw]
Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 35 | warren |
April 12, 2020 17:22
| over 4 years ago
Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Read about the new Cloud exporter here: https://publiclab.org/wiki/mapknitter-cloud-exporter Learn more about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 34 | warren |
July 10, 2019 15:30
| over 5 years ago
Part of the Grassroots Mapping Curriculum series. MapKnitter is a free and open source tool for combining aerial images into a map, or composite image. Informally, we call this "stitching a map" and it's useful if you have many images of overlapping or identical areas, and getting either a web map or a printable map from your photos. MapKnitter can make maps from any image source, but it was designed for making maps with aerial photos from balloons and kites. Start using MapKnitter.org or read on for more documentation! ExportingOnce you're map is complete, you can download it as a single image in JPG and other formats. Learn about exporting maps in MapKnitter here. Activities[activities:mapknitter] Questions[questions:mapknitter] Advanced
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| 33 | warren |
June 03, 2018 23:42
| over 6 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: [activities:mapknitter] Advanced
Upcoming tutorials
Questions[questions:mapknitter] |
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| 32 | warren |
April 19, 2018 17:34
| over 6 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: [activities:mapknitter] Advanced
Upcoming tutorials
Questions[questions:mapknitter] |
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| 31 | GFFchris |
September 22, 2017 12:28
| about 7 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
Q&A[questions:mapknitter] |
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| 30 | stevie |
July 12, 2017 13:34
| over 7 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
Q&A[questions:mapknitter] |
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| 29 | warren |
July 07, 2017 14:04
| over 7 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
Q&A[questions:mapknitter] |
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| 28 | freshcleaning15 |
July 07, 2017 04:54
| over 7 years ago
Are you looking for professional window cleaners in Sydney? If so, Fresh Cleaning makes here a better choice for you. Fresh Cleaning, i.e. us has been operating in cleaning industry since a long time now and our customer-base is always expanding. Service qualities that make us stand apart from the remaining are our commitment, consistency and start to end project management process. Moreover, we are always equipped and on a stance to take over your project, irrespective of any on-going complications. Location: Unit 10 / 37 Penkivil St,Bondi,NSW,2026 |
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| 27 | warren |
May 14, 2017 12:40
| over 7 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
Q&A[questions:mapknitter] |
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| 26 | warren |
February 16, 2016 17:28
| almost 9 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
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| 25 | gonzoearth |
February 11, 2016 06:52
| almost 9 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
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| 24 | Ariana16 |
April 29, 2015 21:31
| over 9 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
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| 23 | gonzoearth |
August 09, 2012 05:36
| over 12 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
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| 22 | gonzoearth |
March 11, 2012 07:44
| almost 13 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter in this list of guides: Advanced
Upcoming tutorials
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| 21 | gonzoearth |
March 11, 2012 07:44
| almost 13 years ago
Part of the Grassroots Mapping Curriculum series. Creating a map from a set of aerial photosLearn to turn aerial images into maps with the Public laboratory's open source MapKnitter.org tool. Upload an image, rotate, distort and stretch it onto a reference map, and use the transparency and outline modes to check how close the fit is. Then export to GeoTiff or OpenLayers/TMS. MapKnitter (MapKnitter.org) is a free and open source tool for combining and positioning images (often from MapMill.org) in geographic space into a composite image map. Known as “orthorectification” or “georectification” to geographers, this step covers the process of figuring out where images can be placed on an existing map, and how they can be combined, or “stitched” together. You are likely to have many images of overlapping or identical areas, which is why MapMill or some type of sorting is used to determine which source images to use from the original set. BackgroundMapKnitter can make maps from any image source, but it particularly lends itself to making maps with balloons and kites. The manual process of making maps with MapKnitter differs greatly from automated aerial imaging systems. In those systems the imaging is of a higher precision and processed with spatial and telemetry data collected along with the imagery, typically at higher altitudes and with consistent image overlap in the flight path sequence. With MapKnitter the cartographer dynamically places each image and selects which images to include in the mosaic. Although the approaches are similar in that they use some type of additional information (usually pre-existing imagery of a lower resolution) as a reference, and that they are bound to specific cartographic elements such as map scale and map projection. GuidesLearn more about MapKnitter, including advanced techniques, in this list of guides: Advanced
Upcoming tutorials
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