140 lines
5 KiB
Python
140 lines
5 KiB
Python
import torch
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import torchvision as tv # type: ignore
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import logging
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from functions.calculate_rotation import calculate_rotation
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from functions.ImageAlignment import ImageAlignment
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@torch.no_grad()
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def perform_donor_volume_rotation(
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mylogger: logging.Logger,
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acceptor: torch.Tensor,
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donor: torch.Tensor,
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oxygenation: torch.Tensor,
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volume: torch.Tensor,
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ref_image_donor: torch.Tensor,
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ref_image_volume: torch.Tensor,
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image_alignment: ImageAlignment,
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batch_size: int,
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config: dict,
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fill_value: float = 0,
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) -> tuple[
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torch.Tensor,
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torch.Tensor,
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torch.Tensor,
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torch.Tensor,
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torch.Tensor,
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]:
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mylogger.info("Calculate rotation between donor data and donor ref image")
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angle_donor = calculate_rotation(
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input=donor,
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reference_image=ref_image_donor,
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image_alignment=image_alignment,
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batch_size=batch_size,
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)
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mylogger.info("Calculate rotation between volume data and volume ref image")
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angle_volume = calculate_rotation(
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input=volume,
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reference_image=ref_image_volume,
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image_alignment=image_alignment,
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batch_size=batch_size,
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)
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mylogger.info("Average over both rotations")
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donor_threshold: torch.Tensor = torch.sort(torch.abs(angle_donor))[0]
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donor_threshold = donor_threshold[
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int(
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donor_threshold.shape[0]
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* float(config["rotation_stabilization_threshold_border"])
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)
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] * float(config["rotation_stabilization_threshold_factor"])
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volume_threshold: torch.Tensor = torch.sort(torch.abs(angle_volume))[0]
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volume_threshold = volume_threshold[
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int(
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volume_threshold.shape[0]
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* float(config["rotation_stabilization_threshold_border"])
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)
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] * float(config["rotation_stabilization_threshold_factor"])
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donor_idx = torch.where(torch.abs(angle_donor) > donor_threshold)[0]
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volume_idx = torch.where(torch.abs(angle_volume) > volume_threshold)[0]
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mylogger.info(
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f"Border: {config['rotation_stabilization_threshold_border']}, "
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f"factor {config['rotation_stabilization_threshold_factor']} "
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)
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mylogger.info(
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f"Donor threshold: {donor_threshold:.3e}, volume threshold: {volume_threshold:.3e}"
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)
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mylogger.info(
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f"Found broken rotation values: "
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f"donor {int(donor_idx.shape[0])}, "
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f"volume {int(volume_idx.shape[0])}"
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)
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angle_donor[donor_idx] = angle_volume[donor_idx]
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angle_volume[volume_idx] = angle_donor[volume_idx]
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donor_idx = torch.where(torch.abs(angle_donor) > donor_threshold)[0]
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volume_idx = torch.where(torch.abs(angle_volume) > volume_threshold)[0]
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mylogger.info(
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f"After fill in these broken rotation values remain: "
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f"donor {int(donor_idx.shape[0])}, "
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f"volume {int(volume_idx.shape[0])}"
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)
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angle_donor[donor_idx] = 0.0
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angle_volume[volume_idx] = 0.0
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angle_donor_volume = (angle_donor + angle_volume) / 2.0
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mylogger.info("Rotate acceptor data based on the average rotation")
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for frame_id in range(0, angle_donor_volume.shape[0]):
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acceptor[frame_id, ...] = tv.transforms.functional.affine(
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img=acceptor[frame_id, ...].unsqueeze(0),
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angle=-float(angle_donor_volume[frame_id]),
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translate=[0, 0],
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scale=1.0,
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shear=0,
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interpolation=tv.transforms.InterpolationMode.BILINEAR,
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fill=fill_value,
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).squeeze(0)
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mylogger.info("Rotate donor data based on the average rotation")
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for frame_id in range(0, angle_donor_volume.shape[0]):
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donor[frame_id, ...] = tv.transforms.functional.affine(
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img=donor[frame_id, ...].unsqueeze(0),
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angle=-float(angle_donor_volume[frame_id]),
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translate=[0, 0],
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scale=1.0,
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shear=0,
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interpolation=tv.transforms.InterpolationMode.BILINEAR,
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fill=fill_value,
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).squeeze(0)
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mylogger.info("Rotate oxygenation data based on the average rotation")
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for frame_id in range(0, angle_donor_volume.shape[0]):
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oxygenation[frame_id, ...] = tv.transforms.functional.affine(
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img=oxygenation[frame_id, ...].unsqueeze(0),
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angle=-float(angle_donor_volume[frame_id]),
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translate=[0, 0],
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scale=1.0,
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shear=0,
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interpolation=tv.transforms.InterpolationMode.BILINEAR,
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fill=fill_value,
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).squeeze(0)
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mylogger.info("Rotate volume data based on the average rotation")
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for frame_id in range(0, angle_donor_volume.shape[0]):
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volume[frame_id, ...] = tv.transforms.functional.affine(
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img=volume[frame_id, ...].unsqueeze(0),
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angle=-float(angle_donor_volume[frame_id]),
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translate=[0, 0],
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scale=1.0,
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shear=0,
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interpolation=tv.transforms.InterpolationMode.BILINEAR,
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fill=fill_value,
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).squeeze(0)
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return (acceptor, donor, oxygenation, volume, angle_donor_volume)
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