# No keypoints detected in dozens of images

**URL:** <https://community.pix4d.com/t/no-keypoints-detected-in-dozens-of-images/3026>\
**Category:** PIX4Dmapper Questions/Troubleshooting\
**Created:** [March 31, 2017, 12:25am UTC](https://community.pix4d.com/t/no-keypoints-detected-in-dozens-of-images/3026 "2017-03-31T00:25:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Jason\_Rolfe](https://avatars.discourse-cdn.com/v4/letter/j/a88e4f/32.png) [@Jason\_Rolfe](https://community.pix4d.com/u/Jason_Rolfe)\
**Post date:** [March 31, 2017, 12:25am UTC](https://community.pix4d.com/t/no-keypoints-detected-in-dozens-of-images/3026/1 "2017-03-31T00:25:43Z")

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I am trying to process some terrestrial data and I have dozens of images that have zero keypoints detected. I can’t seem to calibrate the image without having them, unless I want to add 20 manual tie points, which I’m not certain will work. The images are clear and full of features, but none are being created. What’s going on?

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**Author:** ![Blaz](https://sea2.discourse-cdn.com/pix4d/user_avatar/community.pix4d.com/blaz/32/4344_2.png) [@Blaz](https://community.pix4d.com/u/Blaz)\
**Post date:** [April 12, 2017, 6:39am UTC](https://community.pix4d.com/t/no-keypoints-detected-in-dozens-of-images/3026/2 "2017-04-12T06:39:06Z")

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Hi,

Actually when many images are not calibrated, we suspect a problem with the following:

- The image quality is not sufficient (blurry images, no texture, etc.).
- There is no overlap between the images.
- The camera model associated to the cameras is not correct.
- The image geolocation or coordinate system is not correct.
- The GCP geolocation or coordinate system is not correct.

Solutions that we recommend are to:

- Verify that the image quality is sufficient. For more information: [203756115](https://support.pix4d.com/hc/en-us/articles/203756115).
- Verify that there is enough overlap between the images. For more information: [203756125](https://support.pix4d.com/hc/en-us/articles/203756125).
- Verify that the camera model associated to the camera is correct. For more information: [203032259](https://support.pix4d.com/hc/en-us/articles/203032259).
- Verify that the image geolocation and coordinate system is correct. For more information: [203755985](https://support.pix4d.com/hc/en-us/articles/203755985).
- Verify that the GCP geolocation and coordinate system is correct. For more information: [203032299](https://support.pix4d.com/hc/en-us/articles/203032299).

Best Regards,