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en:help:v2:maps:file-based-calibrate [2019/10/17 14:20] – [How to calibrate an image to use it as a map?] alpinequest | en:help:v2:maps:file-based-calibrate [2019/10/17 14:56] – alpinequest | ||
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====== How to calibrate an image to use it as a map? ====== | ====== How to calibrate an image to use it as a map? ====== | ||
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- | The application allows you to use regular images as maps. | + | The application allows you to use regular images as maps. In order to correctly locate items on this map (points, tracks, etc.), the application must know what is the exact area covered, this is done by the calibration process: after displaying the image, you must match 4 points with another existing and correct map. This process is done only one time, then the image is imported as a regular map file. |
+ | {{: | ||
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+ | The supported image formats are: JPEG, PNG, BMP< | ||
+ | < | ||
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+ | To calibrate an image: | ||
* Select a base map over which one you'll calibrate your image. The application will display the imported image so that it almost covers the current view (as displayed by the white dotted line {{: | * Select a base map over which one you'll calibrate your image. The application will display the imported image so that it almost covers the current view (as displayed by the white dotted line {{: | ||
* Tap the ''" | * Tap the ''" | ||
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When you've selected the correct folder, tap the image {{: | When you've selected the correct folder, tap the image {{: | ||
- | {{ : | + | By default, the 4 calibration points are placed on the four corners. |
- | The application requires you to correctly match four (4) calibration points with the base map. By default, those points are placed on the four corners. | + | {{ : |
For each calibration point: | For each calibration point: | ||
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* Tap and old the arrows icon on the map {{: | * Tap and old the arrows icon on the map {{: | ||
* Tap the button of this calibration point {{: | * Tap the button of this calibration point {{: | ||
- | * Reduce the opacity of the image to calibrate using the opacity slider {{: | + | * Reduce the opacity of the image to calibrate using the opacity slider {{: |
Repeat those steps for the three other calibration points. | Repeat those steps for the three other calibration points. |