# object in subsurface

**URL:** <https://discourse.slicer.org/t/object-in-subsurface/27451>\
**Category:** Support\
**Created:** [January 24, 2023, 8:52pm UTC](https://discourse.slicer.org/t/object-in-subsurface/27451 "2023-01-24T20:52:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![THOD](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/thod/32/18172_2.png) [@THOD](https://discourse.slicer.org/u/THOD)\
**Post date:** [January 24, 2023, 8:52pm UTC](https://discourse.slicer.org/t/object-in-subsurface/27451/1 "2023-01-24T20:52:28Z")

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Hello, i want help if anyone knows

i’m looking a barried object (metal box) and i get some data from my gpr. i use raw image in the 3d slicer but i cant figure how can i see some structure in the image, is any other way? I adjust “HEADER SIZE” to remove non image data but i cant figure the pattern.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [January 24, 2023, 9:05pm UTC](https://discourse.slicer.org/t/object-in-subsurface/27451/2 "2023-01-24T21:05:59Z")

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Try the raw image guess extension. If you don’t see any pattern it’s also possible the image is compressed and further reverse engineering is needed.

> [@New extension: RawImageGuess - for loading of images from unrecognized file format](https://discourse.slicer.org/t/new-extension-rawimageguess-for-loading-of-images-from-unrecognized-file-format/9219/18):
>
> Thank you I will do what you have recommended. Just for clarity, on the button Display ROI what does it mean (ROI) ? The X Y Z Spacing means the the size of the model I think, so if the fetus is 31 CM from Cranium to Coccyx then how do I calibrate correctly or at least very close?