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Transformation Questions #147

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Janudis opened this issue Mar 8, 2023 · 0 comments
Open

Transformation Questions #147

Janudis opened this issue Mar 8, 2023 · 0 comments

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@Janudis
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Janudis commented Mar 8, 2023

I have some questions mostly regarding the transformations you used.

  1. In lib/data/TrainDataset.py you create the calibration matrix in get_render. You create the uv_intrinsic matrix with: 1.0 / float(self.opt.loadSize // 2), where opt.loadSize = 512. However the feature maps from which you sample are 128 x 128. Wouldn't be more correct to use opt.loadSize = 128 or it doesn't matter?
  2. Your calib matrix is a 4x4 matrix where the last row is [0, 0, 0, 1]. This means that the input 3d points should be in homogeneous coordinates. However your 3d points are of size [B, 3, N]. Furthermore your calib matrix is 4x4 but the documentation of the query function in lib/model/HGPIFuNet is:
    :param points: [B, 3, N] world space coordinates of points
    :param calibs: [B, 3, 4] calibration matrices for each image
    :param transforms: Optional [B, 2, 3] image space coordinate transforms

Thanks in advance for your time.

@Janudis Janudis changed the title Image Encoder: Hourglass Architecture Transformation Questions Nov 23, 2023
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