# Model Distortion

**URL:** <https://community.pix4d.com/t/model-distortion/15986>\
**Category:** PIX4Dmapper\
**Created:** [December 23, 2020, 9:26pm UTC](https://community.pix4d.com/t/model-distortion/15986 "2020-12-23T21:26:41Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ksnook](https://avatars.discourse-cdn.com/v4/letter/k/ce7236/32.png) [@ksnook](https://community.pix4d.com/u/ksnook)\
**Post date:** [December 23, 2020, 9:26pm UTC](https://community.pix4d.com/t/model-distortion/15986/1 "2020-12-23T21:26:41Z")

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I have a project that was flown with Drone Deploy / Terrain Awareness on. In the attached image you can see that the blue and green dots are very different.

 ![Capture.PNG](https://global.discourse-cdn.com/pix4d/original/2X/7/78008b72df603603d72a999aa0f54e21266938c9.jpeg) . How can I correct this. It appears as though the image is rapid around a ball.

Thanks,

kevin

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**Author:** ![Yuka](https://avatars.discourse-cdn.com/v4/letter/y/9d8465/32.png) [@Yuka](https://community.pix4d.com/u/Yuka)\
**Post date:** [December 25, 2020, 1:24am UTC](https://community.pix4d.com/t/model-distortion/15986/2 "2020-12-25T01:24:43Z")

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Hello Kevin,

Would you please add the quality report?

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**Author:** ![ksnook](https://avatars.discourse-cdn.com/v4/letter/k/ce7236/32.png) [@ksnook](https://community.pix4d.com/u/ksnook)\
**Post date:** [January 4, 2021, 5:43pm UTC](https://community.pix4d.com/t/model-distortion/15986/3 "2021-01-04T17:43:14Z")

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Yuka,

I’ve attached the report, thanks.

Kevin

[Hwy 370 to Cornhusker\_report.pdf](https://community.pix4d.com/uploads/short-url/3AJtxW2s4AhtD4rtLhVX4x57G6U.pdf) (118.2 KB)

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**Author:** ![Yuka](https://avatars.discourse-cdn.com/v4/letter/y/9d8465/32.png) [@Yuka](https://community.pix4d.com/u/Yuka)\
**Post date:** [January 5, 2021, 9:09am UTC](https://community.pix4d.com/t/model-distortion/15986/4 "2021-01-05T09:09:56Z")

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Hello Kevin,

Thank you for uploading the quality report.

We found bugs on version 4.6.3 of Pix4Dmapper regarding the horizontal and vertical accuracy. Apologize for any inconvenience caused.

If it is possible, would you please process it using version 4.5.6 with the 3D Maps template and mark the GCPs to achieve the best accuracy? You can download 4.5.6 from [here](https://cloud.pix4d.com/download/) and find information [here](https://support.pix4d.com/hc/en-us/articles/202557299-Software-Download-and-Installation) about Software Download and Installation.

For more information about the bugs, please visit  
[The horizontal and vertical accuracy values are not being read correctly](https://community.pix4d.com/t/horizontal-and-vertical-accuracy-not-being-read-correctly/16049)  
[Vertical offset for projects in feet](https://community.pix4d.com/t/vertical-offset-in-pix4dmapper-4-6-3-projects-in-feet/15978).

Thank you for your understanding.

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**Author:** ![ksnook](https://avatars.discourse-cdn.com/v4/letter/k/ce7236/32.png) [@ksnook](https://community.pix4d.com/u/ksnook)\
**Post date:** [January 5, 2021, 2:57pm UTC](https://community.pix4d.com/t/model-distortion/15986/5 "2021-01-05T14:57:08Z")

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Thank you so much Yuka, however I was using a trial version that is no longer licensed, and no longer have a way to process the dataset. Management is going to purchase the software but I’m not sure of the time frame. Thanks again.

Kevin

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**Author:** ![Yuka](https://avatars.discourse-cdn.com/v4/letter/y/9d8465/32.png) [@Yuka](https://community.pix4d.com/u/Yuka)\
**Post date:** [January 6, 2021, 1:54am UTC](https://community.pix4d.com/t/model-distortion/15986/6 "2021-01-06T01:54:24Z")

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Hello Kevin,

That is great to know. Thank you！