topic Re: How to fix image calibration? in ArcGIS Drone2Map Questions

How to fix image calibration?

AaronWorthley1 — Sat, 11 Jun 2016 18:50:45 GMT

Just testing out Drone2Map for the first time with images from a DJI phantom. Finding that only a portion of my mission area is processed, which appears to be because only a selection of the images were calibrated...Its not clear to me what to do to fix this? Processing the same images through the Maps Made Easy service results in full coverage orthomosaic. In Drone2Map processing report I see: "31 out of 50 images calibrated (62%), all images enabled". Any ideas on what to do differently?

Re: How to fix image calibration?

MatthewKing — Thu, 22 Sep 2016 19:48:49 GMT

I would like to know this too....but it looks like there won't be an answer.

I get the following error message: "Processing Failed: No Blocks Computed No Calibrated Cameras"

I have no idea what that means.

Re: How to fix image calibration?

AnthonyMason — Thu, 22 Sep 2016 20:30:21 GMT

This is typically caused by poor image quality (blurry or lack of texture) or insufficient overlap between the images.

If you are able to share the images, I am happy to have a look and help figure out what is happening.

Thanks

Tony

Re: How to fix image calibration?

KalvanHone — Mon, 27 Feb 2017 21:53:33 GMT

I just ran into the same issue. Only 3 images of a rooftop taken manually with DJI P4 and guessing 50% overlap approximate. Let me know where to send the images because I can't find a tool to upload them here.

Re: How to fix image calibration?

KalvanHone — Mon, 27 Feb 2017 21:55:56 GMT

Re: How to fix image calibration?

JeremySchuyler — Tue, 28 Feb 2017 21:24:14 GMT

Hi Kalvan Hone‌,

That message is indicative of either poor image quality or insufficient overlap. We recommend 75% frontal overlap and 60% side overlap. Please try adding additional images with the recommended overlap and run processing again.

Thank you.

Jeremy

Re: How to fix image calibration?

KellyPilarski — Fri, 11 May 2018 18:48:02 GMT

We have been having this issue as well. We are fly with a 80 by 80 percent overlap at 300 feet with a Inspire 2. Our issue comes in mainly when we fly over forested areas.

I can not see a difference in image quality between the photos that work, and the ones that do not calibrate.

Re: How to fix image calibration?

AnthonyMason — Fri, 11 May 2018 20:05:45 GMT

Kelly,

Try to change the calibration method in the processing options to Alternative.

Processing options—Drone2Map for ArcGIS Help | ArcGIS

This is the preferred method when your images are homogeneous and lack the necessary features to generate key points and matches.

Additionally use the 2D Mapping template when creating the project to make sure you are generating enough keypoints.

Thanks

Tony

Re: How to fix image calibration?

GaryBabb — Thu, 30 Apr 2020 19:09:59 GMT

I have the same issue but with XT2 RGB dataset. There is nothing wrong with the image quality. I need to change the camera calibration settings...I am able to do so in pix4d. See photo...How can I do this in Drone2Map?

Re: How to fix image calibration?

CodyBenkelman — Thu, 30 Apr 2020 20:30:30 GMT

Gary

see Editing the camera model—ArcGIS Help | Documentation
Cody B

Re: How to fix image calibration?

GaryBabb — Thu, 30 Apr 2020 20:50:31 GMT

Cody, thanks. I don't have that option but I haven't updated to 2.1 yet. Will be installing. Thanks again!

Re: How to fix image calibration?

TaraBeckman — Fri, 23 Aug 2024 15:39:56 GMT

Hello,

I am having a similar issue. Can you post a screenshot of where the 'alternative' calibration setting is located?

Re: How to fix image calibration?

CodyBenkelman — Mon, 26 Aug 2024 15:41:13 GMT

Hi Tara

Sorry but would you mind starting a new post and explaining exactly what you're seeing? This thread began 8 years ago, and the software has changed dramatically since that time. Screenshots of your project would be helpful, if that doesn't reveal proprietary information. If you have a lot of heavy canopy or water, the image correlation is fundamentally challenging.

Cody B.