In uploading preprocessed data, it's important to make sure your dataset is correctly formatted before uploading, otherwise it might not pass the data validation.

For orthophoto upload, you will encounter an error if the color bands of the submitted image are out of order. It will be deemed invalid by our system. The file has to be manually rewritten so that it will contain the correct band information.

Here are the steps on how to correct it using QGIS:


1. Launch QGIS and import the orthophoto.


2. Ensure that your data is an RGB image (contains color information for red, green and blue channels) by checking if its bit depth is in values ranging from 8 to 24 bits per pixel or higher. (Normally, gray scale is in 2 to 8 bits.) To check this, right click your image > Select Properties > Select Details tab.

Check the Bit Depth information under the Image Property.

3. Once confirmed that the image data has the correct bit-depth value, import the raster into the QGIS platform. Under the Layer Panel, right click the image layer and navigate to Properties.

4. This will prompt the Layer Properties Dialogue Box. Navigate to the Style Tab and then set the proper bands to their correct band channel. Click Apply then OK.

5. In the Layer Panel, right click again the image layer then select Save As.

6. Choose geoTIFF as the file format. Make sure to select Rendered Image as output mode and set the correct coordinate reference system.

7. Upload the corrected orthophoto in the Propeller Platform.

I still can't do it!

We wrote these articles to arm you with everything you need to get the job done on your own, but we understand that sometimes this isn't sufficient.

If you're stuck, the Propeller data specialists team can help for an hourly consulting rate. Email us at support@propelleraero.com or talk with us right now from the chat bubble and we'll do our best to help.

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