# Radiometric calibration image has a wrong format (sequoia)
**URL:** https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364
**Category:** PIX4Dmapper Questions/Troubleshooting
**Created:** [October 12, 2018, 12:36am UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364 "2018-10-12T00:36:43Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@terraDrone\_PT](https://community.pix4d.com/u/terraDrone_PT)
#### Post date: [October 12, 2018, 12:36am UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/1 "2018-10-12T00:36:43Z")
Recently I flew a forest and my Sequoia took 640 x 480 instead (32 bit) instead of 1280 x 960 (16 bit). Pix4D cannot calibrate due to wrong parameters. I tried to resize, but then Pix4D gives me a the following error:
_[Error]: Unable to compute radiometric target calibration for Sequoia\_4.0\_1280x960 (Green)_
What can I do to solve this issue? It happens for all bands.
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### Author:  [@momtanu.chakraborty](https://community.pix4d.com/u/momtanu.chakraborty)
#### Post date: [October 15, 2018, 11:46pm UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/2 "2018-10-15T23:46:14Z")
Hi,
Can you try computing the radiometric calibration with camera only? It might be that your panel images are overexposed, otherwise, I guess you would get an error before.
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### Author:  [@terraDrone\_PT](https://community.pix4d.com/u/terraDrone_PT)
#### Post date: [October 16, 2018, 8:52am UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/3 "2018-10-16T08:52:07Z")
Hi,
Already tried with all options, and it didn’t work.
The only option that works is “no calibration”.
Isn’t there a way I can edit the images so Pix4D accepts it?
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### Author:  [@momtanu.chakraborty](https://community.pix4d.com/u/momtanu.chakraborty)
#### Post date: [October 17, 2018, 6:40pm UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/4 "2018-10-17T18:40:28Z")
Hi,
You can up-sample the images to get the correct resolution and then correct the exif tags. It is a bit of work but it should work.
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### Author:  [@terraDrone\_PT](https://community.pix4d.com/u/terraDrone_PT)
#### Post date: [October 22, 2018, 8:46am UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/5 "2018-10-22T08:46:32Z")
Hi, I up-sampled, but how can I correct the EXIF, and what metadata should I use?
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### Author:  [@momtanu.chakraborty](https://community.pix4d.com/u/momtanu.chakraborty)
#### Post date: [October 22, 2018, 9:32pm UTC](https://community.pix4d.com/t/radiometric-calibration-image-has-a-wrong-format-sequoia/7364/6 "2018-10-22T21:32:30Z")
Hi,
The link has the list of tags: [https://support.pix4d.com/hc/en-us/articles/205732309-EXIF-and-XMP-tag-information-read-by-Pix4D-Desktop](https://support.pix4d.com/hc/en-us/articles/205732309-EXIF-and-XMP-tag-information-read-by-Pix4D-Desktop). You can use exiv2 for writing the tags. The important camera and radiometry tags need to be preserved.