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6 changes: 3 additions & 3 deletions pytorch3d/transforms/rotation_conversions.py
Original file line number Diff line number Diff line change
Expand Up @@ -110,7 +110,7 @@ def matrix_to_quaternion(matrix: torch.Tensor) -> torch.Tensor:
quaternions with real part first, as tensor of shape (..., 4).
"""
if matrix.size(-1) != 3 or matrix.size(-2) != 3:
raise ValueError(f"Invalid rotation matrix shape f{matrix.shape}.")
raise ValueError(f"Invalid rotation matrix shape {matrix.shape}.")

batch_dim = matrix.shape[:-2]
m00, m01, m02, m10, m11, m12, m20, m21, m22 = torch.unbind(
Expand Down Expand Up @@ -267,7 +267,7 @@ def matrix_to_euler_angles(matrix, convention: str):
if letter not in ("X", "Y", "Z"):
raise ValueError(f"Invalid letter {letter} in convention string.")
if matrix.size(-1) != 3 or matrix.size(-2) != 3:
raise ValueError(f"Invalid rotation matrix shape f{matrix.shape}.")
raise ValueError(f"Invalid rotation matrix shape {matrix.shape}.")
i0 = _index_from_letter(convention[0])
i2 = _index_from_letter(convention[2])
tait_bryan = i0 != i2
Expand Down Expand Up @@ -430,7 +430,7 @@ def quaternion_apply(quaternion, point):
Tensor of rotated points of shape (..., 3).
"""
if point.size(-1) != 3:
raise ValueError(f"Points are not in 3D, f{point.shape}.")
raise ValueError(f"Points are not in 3D, {point.shape}.")
real_parts = point.new_zeros(point.shape[:-1] + (1,))
point_as_quaternion = torch.cat((real_parts, point), -1)
out = quaternion_raw_multiply(
Expand Down