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Running
on
Zero
File size: 2,647 Bytes
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#
# Copyright (C) 2023, Inria
# GRAPHDECO research group, https://team.inria.fr/graphdeco
# All rights reserved.
#
# This software is free for non-commercial, research and evaluation use
# under the terms of the LICENSE.md file.
#
# For inquiries contact george.drettakis@inria.fr
#
import torch
from torch import nn
import numpy as np
from utils.graphics_utils import getWorld2View2, getProjectionMatrix
class Camera(nn.Module):
def __init__(self, colmap_id, R, T, FoVx, FoVy, image, gt_alpha_mask,
image_name, uid,
trans=np.array([0.0, 0.0, 0.0]), scale=1.0, data_device = "cuda"
):
super(Camera, self).__init__()
self.uid = uid
self.colmap_id = colmap_id
self.R = R
self.T = T
self.FoVx = FoVx
self.FoVy = FoVy
self.image_name = image_name
try:
self.data_device = torch.device(data_device)
except Exception as e:
print(e)
print(f"[Warning] Custom device {data_device} failed, fallback to default cuda device" )
self.data_device = torch.device("cuda")
self.original_image = image.clamp(0.0, 1.0).to(self.data_device)
self.image_width = self.original_image.shape[2]
self.image_height = self.original_image.shape[1]
if gt_alpha_mask is not None:
self.original_image *= gt_alpha_mask.to(self.data_device)
else:
self.original_image *= torch.ones((1, self.image_height, self.image_width), device=self.data_device)
self.zfar = 100.0
self.znear = 0.01
self.trans = trans
self.scale = scale
self.world_view_transform = torch.tensor(getWorld2View2(R, T, trans, scale)).transpose(0, 1).cuda()
self.projection_matrix = getProjectionMatrix(znear=self.znear, zfar=self.zfar, fovX=self.FoVx, fovY=self.FoVy).transpose(0,1).cuda()
self.full_proj_transform = (self.world_view_transform.unsqueeze(0).bmm(self.projection_matrix.unsqueeze(0))).squeeze(0)
self.camera_center = self.world_view_transform.inverse()[3, :3]
class MiniCam:
def __init__(self, width, height, fovy, fovx, znear, zfar, world_view_transform, full_proj_transform):
self.image_width = width
self.image_height = height
self.FoVy = fovy
self.FoVx = fovx
self.znear = znear
self.zfar = zfar
self.world_view_transform = world_view_transform
self.full_proj_transform = full_proj_transform
view_inv = torch.inverse(self.world_view_transform)
self.camera_center = view_inv[3][:3]
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