# Gap in image

**URL:** <https://community.pix4d.com/t/gap-in-image/22915>\
**Category:** PIX4Dmapper\
**Created:** [June 8, 2022, 8:45pm UTC](https://community.pix4d.com/t/gap-in-image/22915 "2022-06-08T20:45:29Z")\
**Posts on this page:** 11\
**Page:** 1

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 8, 2022, 8:45pm UTC](https://community.pix4d.com/t/gap-in-image/22915/1 "2022-06-08T20:45:29Z")

</div>

I flew this job and processed it as I normally do, however, this time I have a large hole in my map.

There are no ray clouds over the gap.

Did the drone not take pictures in this area?

[Agave Highlands 060722\_report.pdf](https://community.pix4d.com/uploads/short-url/hfASwk63k8i7H75YhRtgRWalaqZ.pdf) (2.8 MB)

---

<div class="post-metadata">

**Author:** ![Mike\_K](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/mike_k/32/4697_2.png) [@Mike\_K](https://community.pix4d.com/u/Mike_K)\
**Post date:** [June 9, 2022, 8:44pm UTC](https://community.pix4d.com/t/gap-in-image/22915/2 "2022-06-09T20:44:15Z")

</div>

Hi msmith,  
First, you have very high camera optimization error. I would enable All Prior and reprocess. This will force the optimal internal parameters to be close to the initial values. If it still has problems let us know.

 ![All Prior (Highlighted)](https://global.discourse-cdn.com/pix4d/original/2X/d/ded10d4f4530372bbcbfdf69cd1043bdea1f5974.png)

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 9, 2022, 8:56pm UTC](https://community.pix4d.com/t/gap-in-image/22915/3 "2022-06-09T20:56:11Z")

</div>

Will do, thank you!

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 10, 2022, 12:57am UTC](https://community.pix4d.com/t/gap-in-image/22915/4 "2022-06-10T00:57:49Z")

</div>

I reprocessed the image but half of the image was missing although the quality is much better from what I can see.

---

<div class="post-metadata">

**Author:** ![Mike\_K](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/mike_k/32/4697_2.png) [@Mike\_K](https://community.pix4d.com/u/Mike_K)\
**Post date:** [June 10, 2022, 2:36pm UTC](https://community.pix4d.com/t/gap-in-image/22915/5 "2022-06-10T14:36:21Z")

</div>

Can you attach the updated quality report?

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 10, 2022, 3:34pm UTC](https://community.pix4d.com/t/gap-in-image/22915/6 "2022-06-10T15:34:02Z")

</div>

Its showing that the GCP’s are not marked for some reason. I have them marked unless they lose their properties after I played with the settings?

Its definitely a calibration GCP problem of some kind. Im just not sure how to go about fixing it.

The initial hole in the image is now gone which tells me its a processing error and not an error with the flight.

[Agave Highlands 061022\_report.pdf](https://community.pix4d.com/uploads/short-url/lHXtWzXdzjO7Lv09lbzhV4DZUiJ.pdf) (1.4 MB)

---

<div class="post-metadata">

**Author:** ![Mike\_K](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/mike_k/32/4697_2.png) [@Mike\_K](https://community.pix4d.com/u/Mike_K)\
**Post date:** [June 10, 2022, 4:37pm UTC](https://community.pix4d.com/t/gap-in-image/22915/7 "2022-06-10T16:37:31Z")

</div>

I don’t know if you have orientation geotags, but you can try either Alternative or Accurate Geolocation and Orientation as your calibration method.

 ![Alternative-All Prior](https://global.discourse-cdn.com/pix4d/original/2X/c/cb069c9f7305381ce77d6c2a18f45f8d642df3bb.png)

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 10, 2022, 5:49pm UTC](https://community.pix4d.com/t/gap-in-image/22915/8 "2022-06-10T17:49:33Z")

</div>

I tried processing it again. I just went through the initial process to see a preview and what I got looked great but it only covers part of the site again. Its a different portion of the site for some reason. I dont know why I would get two different portions of the site processed from the same image?

Take a look at my ray cloud. Why is it showing some images tied to a GCP but not others, even though I have them tagged?

I tried changing the calibration method but it would not allo me to, it says all images must be geolocated and oriented to use those methods.

[AGAVE HIGHLANDS GOLFCOURSE 061022\_report.pdf](https://community.pix4d.com/uploads/short-url/iAtjZPvQtIh0KbfccwosgjVRTRd.pdf) (1.2 MB)

 ![AGAVE HIGHLANDS RAY CLOUD](https://global.discourse-cdn.com/pix4d/original/2X/6/6e9c1afc6f7c1d27be7a2f926d8b21944ba2f2e7.png)

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 10, 2022, 7:08pm UTC](https://community.pix4d.com/t/gap-in-image/22915/9 "2022-06-10T19:08:43Z")

</div>

100% CALIBRATION!

Thank you for your help!

---

<div class="post-metadata">

**Author:** ![msmith](https://avatars.discourse-cdn.com/v4/letter/m/aca169/32.png) [@msmith](https://community.pix4d.com/u/msmith)\
**Post date:** [June 13, 2022, 2:43pm UTC](https://community.pix4d.com/t/gap-in-image/22915/10 "2022-06-13T14:43:06Z")

</div>

Spoke too soon!

Everything looked good in pre-process however now I have striping in my ortho…

[Agave Highlands 060722\_report.pdf](https://community.pix4d.com/uploads/short-url/hkI1uhMZDbnbIb1XLiN9Bs4LcBk.pdf) (2.8 MB)  
 ![agave highlands ortho](https://global.discourse-cdn.com/pix4d/original/2X/2/26580c96a17dca5b600831be9921fafd142f76cf.png)

---

<div class="post-metadata">

**Author:** ![Mike\_K](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/mike_k/32/4697_2.png) [@Mike\_K](https://community.pix4d.com/u/Mike_K)\
**Post date:** [June 13, 2022, 5:12pm UTC](https://community.pix4d.com/t/gap-in-image/22915/11 "2022-06-13T17:12:20Z")

</div>

Hi msmith.  
It looks like you have one bad GCP. GCP 7525 shows -355 ft in the X and 160 in the Y. All of your other GCP look good. I would disable this since it appears to be erroneous.

 ![2022-06-13_11-08-00](https://global.discourse-cdn.com/pix4d/original/2X/a/ab6f512061bcd7b8329cc7d367bd361ee83156c5.png)

As for your orthomosaic, this is difficult to say why it is stripped like this. However, I noticed that your GPU driver is quite out of date and out of date drivers can cause many processing issues. I suggest downloading the latest driver and reprocessing.

> **[NVIDIA RTX / Quadro Desktop and Notebook Driver Release 515 | R515 U1 (516.25)...](https://www.nvidia.com/Download/driverResults.aspx/189746/en-us/)**
>
> Download the English (US) NVIDIA RTX / Quadro Desktop and Notebook Driver Release 515 for Windows 10 64-bit, Windows 11 systems. Released 2022.5.31
