# Calibration error **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [July 21, 2017, 1:18pm UTC](https://community.pix4d.com/t/calibration-error/3882 "2017-07-21T13:18:53Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Sigma\_VANT](https://avatars.discourse-cdn.com/v4/letter/s/4bbf92/32.png) [@Sigma\_VANT](https://community.pix4d.com/u/Sigma_VANT)\ **Post date:** [July 21, 2017, 1:18pm UTC](https://community.pix4d.com/t/calibration-error/3882/1 "2017-07-21T13:18:53Z")
 Hello I would like to know if anyone can help me, I need to process this flight that are in two blocks, but one of them is giving calibration error, any suggestions? If you need flight data, you are in the link [https://drive.google.com/drive/folders/0B2Lz26Ra2MbDNFhPazB4N3FwcDA?usp=sharing](https://drive.google.com/drive/folders/0B2Lz26Ra2MbDNFhPazB4N3FwcDA?usp=sharing)    ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 21, 2017, 2:09pm UTC](https://community.pix4d.com/t/calibration-error/3882/2 "2017-07-21T14:09:55Z")
I would like to help, but give me this afternoon to look at what you have. ---
**Author:** ![Pierangelo\_Rothenbuhler](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/pierangelo_rothenbuhler/32/2439_2.png) [@Pierangelo\_Rothenbuhler](https://community.pix4d.com/u/Pierangelo_Rothenbuhler)\ **Post date:** [July 24, 2017, 9:53am UTC](https://community.pix4d.com/t/calibration-error/3882/3 "2017-07-24T09:53:37Z")
Please make the Google Drive link public, so that it is easier to have access to the files. :)  Checking the following points is usually a good way to start investigating such issues:  - Verify that the image quality is sufficient: [203756115](https://support.pix4d.com/hc/en-us/articles/203756115). - Verify that there is enough overlap between the images: [203756125](https://support.pix4d.com/hc/en-us/articles/203756125). - Verify that the camera model associated to the camera is correct: [203032259](https://support.pix4d.com/hc/en-us/articles/203032259). - Verify that the image geolocation and coordinate system is correct: [203755985](https://support.pix4d.com/hc/en-us/articles/203755985). - Verify that the GCP geolocation and coordinate system is correct: [203032299](https://support.pix4d.com/hc/en-us/articles/203032299). These steps are grouped in this article: [https://support.pix4d.com/hc/en-us/articles/203832269-Error-e0046-Processing-failed-No-calibrated-cameras-](https://support.pix4d.com/hc/en-us/articles/203832269-Error-e0046-Processing-failed-No-calibrated-cameras-)  @Gary did you already have a look at the data? Did you find anything? Would be interesting to have your input. ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 24, 2017, 10:43am UTC](https://community.pix4d.com/t/calibration-error/3882/4 "2017-07-24T10:43:07Z")
Trying to look yesterday but access was restricted, 0630 here now logging in now ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 24, 2017, 11:19am UTC](https://community.pix4d.com/t/calibration-error/3882/5 "2017-07-24T11:19:32Z")
This dataset should be processed as two separate datasets, If you would like, I will process and upload outputs to your share drive. ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 24, 2017, 12:23pm UTC](https://community.pix4d.com/t/calibration-error/3882/6 "2017-07-24T12:23:08Z")
Recommend increasing overlaps, this would help greatly in your areas of interest (terrain). Using some ground targets would help you with image registration in this case. Area 1 to the east will process well, however Area 2 to the west has less overlap and pixel smearing is a problem for automatic tie point creation.   ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 24, 2017, 1:39pm UTC](https://community.pix4d.com/t/calibration-error/3882/7 "2017-07-24T13:39:33Z")
Results for Eastern POI report upload to your share. ---
**Author:** ![Sigma\_VANT](https://avatars.discourse-cdn.com/v4/letter/s/4bbf92/32.png) [@Sigma\_VANT](https://community.pix4d.com/u/Sigma_VANT)\ **Post date:** [July 26, 2017, 1:34pm UTC](https://community.pix4d.com/t/calibration-error/3882/8 "2017-07-26T13:34:19Z")
Gary/ Pierangelo Thank you very much for your commitment to help me, I thought it was some processing problem, but in the case of the west area I believe that I will have to make a new flight taking care of the overlap. Gary, thank you very much for your commitment to help me, I thought it was some processing problem, but in the case of the west area I believe that I will have to make a new flight taking care of the overlap. Oséias Valiejus  [geo.oseias@gmail.com](mailto:geo.oseias@gmail.com) Ribeirão Preto/SP - Brasil   ---
**Author:** ![Gary\_La\_Mantia](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/gary_la_mantia/32/300_2.png) [@Gary\_La\_Mantia](https://community.pix4d.com/u/Gary_La_Mantia)\ **Post date:** [July 26, 2017, 1:43pm UTC](https://community.pix4d.com/t/calibration-error/3882/9 "2017-07-26T13:43:11Z")
Pleasure Sir! Feel free to call on me if you have more detailed question or technical issues. Good luck going forward. ---
**Author:** ![uavis](https://avatars.discourse-cdn.com/v4/letter/u/ed655f/32.png) [@uavis](https://community.pix4d.com/u/uavis)\ **Post date:** [June 20, 2021, 7:49am UTC](https://community.pix4d.com/t/calibration-error/3882/10 "2021-06-20T07:49:39Z")
I have a project that has been merged from 12 down to 2 and I am currently merging the final two projects. Everything has calibrated fine to this point but now on the last merge the calibrating has happened 4 times so far. Does it calibrate at different image scales? I have set the image scale to 1/2 as it needs to be of high quality. Hardware is fine, image quality is fine and overlap is fine. It’s just calibrating multiple times. Is this normal? ---
**Author:** ![Christina](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/christina/32/303_2.png) [@Christina](https://community.pix4d.com/u/Christina)\ **Post date:** [June 21, 2021, 6:50am UTC](https://community.pix4d.com/t/calibration-error/3882/11 "2021-06-21T06:50:24Z")
What do you mean by > but now on the last merge the calibrating has happened 4 times so far. Does the software freeze? Does it give you an error message? ---
**Author:** ![Christina](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/christina/32/303_2.png) [@Christina](https://community.pix4d.com/u/Christina)\ **Post date:** [June 24, 2021, 12:20pm UTC](https://community.pix4d.com/t/calibration-error/3882/12 "2021-06-24T12:20:48Z")
A post was split to a new topic: [I get black screen when adding GCPs](https://community.pix4d.com/t/i-get-black-screen-when-adding-gcps/18678)