Setting the Correct Band Information for Orthophotos Using QGIS


In uploading preprocessed data, it's important to make sure your dataset is correctly formatted before uploading. Otherwise, it might not pass 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 ranges from 8 to 24 bits per pixel or higher. (Normally, grayscale is in 2 to 8 bits.) 

To check this, right-click your image, select Properties, and select the Details tab.

Check the Bit depth information under the Image section.

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 set the proper bands to their correct band channel. Click Apply, then OK.


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


6. Choose geoTIFF as the file format. 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 equip 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, you can connect with our support team by clicking the support button on the top right corner of your user portal.