# Image was not calibrated Properly. What is the reason? **URL:** \ **Category:** PIX4Dmapper Questions/Troubleshooting\ **Created:** [April 18, 2018, 6:27am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392 "2018-04-18T06:27:55Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![rohini\_murugan1](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@rohini\_murugan1](https://community.pix4d.com/u/rohini_murugan1)\ **Post date:** [April 18, 2018, 6:27am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/1 "2018-04-18T06:27:55Z")
  ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 18, 2018, 6:58am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/2 "2018-04-18T06:58:55Z")
Could you share the quality report? It seems that the overlap isn’t sufficient ---
**Author:** ![rohini\_murugan1](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@rohini\_murugan1](https://community.pix4d.com/u/rohini_murugan1)\ **Post date:** [April 18, 2018, 11:07am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/3 "2018-04-18T11:07:10Z")
I have just finished my Initial Processing… I Couldn’t identify the reason for Uncalibration…  I thought that it may due to vegetation area or Coordinate Zone Changing place… The place(Uncalibrated Strip) was locate between two zones. ---
**Author:** ![Selim\_Erguden](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/selim_erguden/32/337_2.png) [@Selim\_Erguden](https://community.pix4d.com/u/Selim_Erguden)\ **Post date:** [April 18, 2018, 11:53am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/4 "2018-04-18T11:53:44Z")
Hey Rohini, Are all those uncalibrated images trees? If so you could try using Alternative calibration, and 0.5 image scale. Alternatively you could add some MTP’s. ---
**Author:** ![rohini\_murugan1](https://avatars.discourse-cdn.com/v4/letter/r/e95f7d/32.png) [@rohini\_murugan1](https://community.pix4d.com/u/rohini_murugan1)\ **Post date:** [April 18, 2018, 12:20pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/5 "2018-04-18T12:20:52Z")
Hey Selim, I’m a beginner to Pix4D. So please explain briefly about the alternative calibration. ---
**Author:** ![Selim\_Erguden](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/selim_erguden/32/337_2.png) [@Selim\_Erguden](https://community.pix4d.com/u/Selim_Erguden)\ **Post date:** [April 18, 2018, 12:59pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/6 "2018-04-18T12:59:19Z")
Hey Rohini, Image scale is under Processing Options/General  tab and the Calibration method is under Calibration tab, make sure the Advanced tab is checked.  Take a look at the following link: [https://support.pix4d.com/hc/en-us/articles/205327965-Menu-Process-Processing-Options-1-Initial-Processing-Calibration](https://support.pix4d.com/hc/en-us/articles/205327965-Menu-Process-Processing-Options-1-Initial-Processing-Calibration) ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 18, 2018, 2:34pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/7 "2018-04-18T14:34:41Z")
  Even thought 93% of photos were calibrated pix4d created 7 blocks which is not a good sign. I’m pretty sure that there are more some kind of shifts You can see those blocks here. Different color means different block. ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 19, 2018, 7:29am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/8 "2018-04-19T07:29:32Z")
Hey Selim, I have used Alternative Calibration & 0.25 Image scale for that single strip. Eventhough there were some images which are uncalibrated. Take a look at the image… ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 19, 2018, 9:39am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/9 "2018-04-19T09:39:59Z")
Hey Jaakko, Would You please explain what kind of shift it is? how to rectify the problem? ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 19, 2018, 9:44am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/10 "2018-04-19T09:44:47Z")
The projects I’ve done and had similar results using “All prior” in camera optimization settings have solved the problem. You should try that.   The shift is usually some kind of vertical shift between blocks. Something like this: ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 19, 2018, 10:21am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/11 "2018-04-19T10:21:15Z")
Hey Jaakko, I have processed initial step for that uncalibrated single strip using all priors in camera optimization but the problem doesn’t solved. ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 19, 2018, 10:42am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/12 "2018-04-19T10:42:30Z")
Could you share the data set? I could take a look at it ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 19, 2018, 1:01pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/13 "2018-04-19T13:01:21Z")
Hey Jaakko, Here I have attached the uncalibrated dataset… take a look at it. [http://www.fileconvoy.com/dfl.php?id=g1302e8a6b89903cc1000075704d770fb595071b4d0](http://www.fileconvoy.com/dfl.php?id=g1302e8a6b89903cc1000075704d770fb595071b4d0) ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 19, 2018, 2:40pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/14 "2018-04-19T14:40:18Z")
I’ve checked the images and I’m pretty sure that the overlap isn’t sufficient. ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 20, 2018, 4:18am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/15 "2018-04-20T04:18:46Z")
Hey Jaakko, Is there any other possible ways to calibrate images? ---
**Author:** ![Jaakko\_Laihola](https://avatars.discourse-cdn.com/v4/letter/j/f6c823/32.png) [@Jaakko\_Laihola](https://community.pix4d.com/u/Jaakko_Laihola)\ **Post date:** [April 20, 2018, 4:24am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/16 "2018-04-20T04:24:28Z")
You could try to get them manually calibrated  [https://support.pix4d.com/hc/en-us/articles/202560189-How-to-manually-calibrate-uncalibrated-Cameras-in-the-rayCloud](https://support.pix4d.com/hc/en-us/articles/202560189-How-to-manually-calibrate-uncalibrated-Cameras-in-the-rayCloud) ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 20, 2018, 7:27am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/17 "2018-04-20T07:27:01Z")
I will try about the Manual Calibration and then let u know. ---
**Author:** ![Selim\_Erguden](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/selim_erguden/32/337_2.png) [@Selim\_Erguden](https://community.pix4d.com/u/Selim_Erguden)\ **Post date:** [April 20, 2018, 12:26pm UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/18 "2018-04-20T12:26:52Z")
Hey Rohini,  You have mentioned that you tried 0.25 image scale have you also tried 0.5 image scale? ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 23, 2018, 5:40am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/19 "2018-04-23T05:40:44Z")
Hey Jaakko, Thanks for your Instructions. I will try about the Manual Calibration and let you know. ---
**Author:** ![rohini\_murugan](https://avatars.discourse-cdn.com/v4/letter/r/e0b2c6/32.png) [@rohini\_murugan](https://community.pix4d.com/u/rohini_murugan)\ **Post date:** [April 23, 2018, 5:42am UTC](https://community.pix4d.com/t/image-was-not-calibrated-properly-what-is-the-reason/6392/20 "2018-04-23T05:42:08Z")
Hey Selim, I have also tried 0.5 image scale… still there was an error in an image.