Messages

1

General / Parrot Sequoia + Reflectance Calibration Values

« on: February 13, 2021, 09:56:43 PM »

Hey All--

The Parrot Sequoia+ reflectance calibration seems to remain an ongoing issue/ frustration. While others may have solved this, I, personally, have never gotten Metashape to automatically recognize the proper reflectance values for the bands. As the Sequoia+ doesn't export a .CSV file like the MicaSense, I always have to input the values manually. The one benefit of this is that it gives me the flexibility to select the target with the best exposure since Sequoia+ captures 3 images of the target with varying exposure. Per the calibration target, I'm using the following values: Green 0.189; Red 0.197; REG 0.221; NIR 0.255. I've included a pic of the target as well. Hope this helps some of y'all!

2

General / Export Points with Column Headers

« on: September 18, 2020, 11:42:32 PM »

When exporting points with colors, can you add headers so that I can understand the column values when I open the text document?

3

General / Export Points with NDVI Values

« on: September 17, 2020, 11:42:41 PM »

After calculating the NDVI values for a dense point cloud can the points be exported with the NDVI values associated to the points?  I would like to export the points with the NDVI values directly from Agisoft to ArcGIS so that I nest the local data within the larger regional multispectral data. Any insights or recommendations would be much appreciated!

4

General / Filter Dense Cloud while retaining classification

« on: November 09, 2019, 07:14:24 PM »

Is there a way to filter (aka reduce quantity) a dense cloud and still retain the classification? I've tried selecting "No" in the "Replace Default Dense Cloud" option. The classifications are removed, nevertheless. I've spent too much time cleaning up the classification to start over.

5

Camera Calibration / Marker at base of image

« on: July 22, 2019, 12:47:49 AM »

I have an aerial in which the GCP is at the base of the building and blocked by an overhang. Should the marker (GCP 1d-5) on that image be blocked so that the elevation isn't misinterpreted when I calibrate the model?