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I am trying to create a scene inside the Reality Composer to track images.

So I added a cube, an image, and I see this error message

This image lacks the attributes necessary for tracking.

enter image description here

I have tried with different images, same message.

After reading the extensive documentation Apple wrote about the theme (zero lines), I ask you guys what what kind of attributes should the be present on tracking image...

Andy Jazz
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Duck
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2 Answers2

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You're right, there's no official documentation on that topic. But you can get to the bottom of the truth experimentally. A reference picture you've imported for image tracking has repetitive pattern. If you change it for a proper image you'll never receive such a message again.

Here are some tips for correct reference image attributes:

  • Well-discernable pattern
  • No repetitive pattern (like yours, or stripes, or polka dot)
  • High-contrast edges of silhouettes on a picture
  • High-contrast colours (RGB image mustn't be a solid grey if you convert it into B&W)
  • Moderate size (400 x 400 pix is quite enough)
  • No white-sheet-image or gradient-only-image
  • RGB linear color space
  • 72 pixels per inch
  • No high compression for JPG
Andy Jazz
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    Thanks, I will try that but who writes documentations for Apple has to be fired. I am undecided if Apple hates or despises developers. Thanks. – Duck Aug 04 '20 at 20:29
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I just had to make my image higher quality and I didn’t get that message at all after that.

MASONNET
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