f07e915f6d
- Découpage du monolithe process_lidar.py (~2750 lignes) en package lidar_pipeline/ avec 9 modules (gpu, dtm, visualizations, ign, rendering, pipeline, cli, __init__, __main__) - Logging configurable: -v (verbose avec timestamps) et --debug (détails internes fichier:ligne) - Option --force pour régénérer tous les fichiers (par défaut skip les WebP existants) - Option --file NOM pour traiter un seul fichier LAZ (tests rapides) - ProcessPoolExecutor avec répertoires temporaires uniques par worker - Suppression du code mort (geomorphons, hillshade_ne, nodata_mask) - Aucun fichier TIFF résiduel après conversion WebP - setup.py pour installation pip, stub process_lidar.py compatible Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
"""GPU acceleration helpers for LiDAR pipeline.
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Provides CuPy/numpy abstraction layer. If CuPy is available and a CUDA GPU
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is detected, array operations are accelerated on the GPU. Otherwise, all
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operations fall back to numpy/scipy on CPU.
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"""
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import logging
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import numpy as np
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from scipy import ndimage
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logger = logging.getLogger("lidar")
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# GPU detection - must happen at import time
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HAS_GPU = False
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_gpu_name = None
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_gpu_mem_gb = 0
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_xp = np # Default: CPU
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try:
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import cupy as cp
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import cupyx.scipy.ndimage as cp_ndimage
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_gpu_info = cp.cuda.runtime.getDeviceProperties(0)
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_gpu_name = _gpu_info['name'].decode() if isinstance(_gpu_info['name'], bytes) else str(_gpu_info['name'])
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_gpu_mem_gb = _gpu_info['totalGlobalMem'] // (1024 ** 3)
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HAS_GPU = True
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_xp = cp
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except (ImportError, Exception):
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pass
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def log_gpu_status():
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"""Log GPU detection result. Called after logging is configured."""
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if HAS_GPU:
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logger.info(f"GPU détectée: {_gpu_name} ({_gpu_mem_gb} Go VRAM)")
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else:
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logger.info("Pas de GPU — mode CPU uniquement")
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def to_gpu(arr):
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"""Send array to GPU if available, otherwise return as float64 numpy."""
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if HAS_GPU:
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return cp.asarray(arr.astype(np.float64))
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return arr.astype(np.float64)
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def to_cpu(arr):
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"""Bring array back to CPU (numpy). No-op if already on CPU."""
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if HAS_GPU and isinstance(arr, cp.ndarray):
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return cp.asnumpy(arr)
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return arr
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def xp_gaussian_filter(arr, sigma):
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"""Gaussian filter — uses GPU if array is on GPU, CPU otherwise."""
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if HAS_GPU and isinstance(arr, cp.ndarray):
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return cp_ndimage.gaussian_filter(arr, sigma)
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return ndimage.gaussian_filter(arr, sigma)
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def xp_uniform_filter(arr, size):
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"""Uniform filter — uses GPU if array is on GPU, CPU otherwise."""
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if HAS_GPU and isinstance(arr, cp.ndarray):
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return cp_ndimage.uniform_filter(arr, size)
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return ndimage.uniform_filter(arr, size)
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def xp_minimum_filter(arr, footprint=None, size=None):
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"""Minimum filter — uses GPU if array is on GPU, CPU otherwise."""
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if HAS_GPU and isinstance(arr, cp.ndarray):
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return cp_ndimage.minimum_filter(arr, footprint=footprint, size=size)
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return ndimage.minimum_filter(arr, footprint=footprint, size=size) |