A offset for PBR's camera K

rasmushaugaard / surfemb

SurfEmb (CVPR 2022)

https://surfemb.github.io/

MIT License

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A offset for PBR's camera K #15

Closed rcao-hk closed 2 years ago

rcao-hk commented 2 years ago

Hi,

Thank you for your excellent work! I just wondering why there is a 0.5 offset to compensate camera K for PBR data. Thank you!

Best, Rui

rasmushaugaard commented 2 years ago

Hi there Thank you!

In the camera matrix provided with the PBR data, i presume the principal axis is in the center of the image and that the image origin is at the corner of the top left pixel, since cx=w/2. In opencv however, the convention is to have the image origin in the center of the top left pixel.