depths_double_to_points is different from rendered_expected_coord

BaowenZ / RaDe-GS

RaDe-GS: Rasterizing Depth in Gaussian Splatting

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depths_double_to_points is different from rendered_expected_coord #49

Open qingjie-wang opened 3 months ago

qingjie-wang commented 3 months ago

why the value of depths_double_to_points(rendered_expected_depth) is different from rendered_expected_coord?

BaowenZ commented 3 months ago

Hi, the rendered_expected_coord are calculated from the inverse of local affine transformation of Gaussian Splatting. While depths_double_to_points uses prospective.