0d3c3ba8bc
Nouvelle visualisation relief_oriente : une image RGB unique qui fusionne l'openness positive locale (MNT détendancé σ 10 m, rayons 5/10/20 m, 16 directions) portée par la clarté CIELAB et l'orientation des pentes portée par la teinte. Échelle log fixe et support de 40 m sous la bande de raccord de 100 m : dalles jointives. Calcul sur grille décimée à 0,8 m, noyau dédié (CuPy RawKernel, numba parallèle, repli numpy) et colorisation par table L* × teinte : ~8 s par dalle sur CPU au lieu de ~50 s. L'openness positive et négative est normalisée par des références figées mesurées sur 15 dalles au lieu d'un z-score par dalle, qui rendait l'échelle de couleur non jointive. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
220 lines
9.4 KiB
Python
220 lines
9.4 KiB
Python
"""Tests for rendering module (colormaps, tif_to_png)."""
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import numpy as np
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import rasterio
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from rasterio.transform import from_bounds
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import pytest
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from pathlib import Path
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def _make_test_tif(tmp_path, data=None, size=50):
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"""Create a small test GeoTIFF and return its path."""
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if data is None:
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rng = np.random.default_rng(42)
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data = rng.normal(0, 1, (size, size)).astype(np.float32)
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transform = from_bounds(660000, 6700000, 661000, 6701000, size, size)
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tif_file = tmp_path / "test_vis.tif"
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with rasterio.open(
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tif_file, 'w', driver='GTiff', height=size, width=size,
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count=1, dtype='float32', crs='EPSG:2154', transform=transform,
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compress='lzw'
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) as dst:
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dst.write(data, 1)
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return tif_file
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class TestColormaps:
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def test_colormaps_dict_exists(self):
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from lidar_pipeline.rendering import COLORMAPS
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assert isinstance(COLORMAPS, dict)
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def test_all_viz_steps_have_colormaps(self):
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"""Every VIZ_STEPS entry should have a corresponding COLORMAPS entry or render correctly."""
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from lidar_pipeline.pipeline import VIZ_STEPS
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from lidar_pipeline.rendering import COLORMAPS
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# Some viz names differ from colormap keys
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name_map = {
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'pos_open': 'positive_openness',
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'neg_open': 'negative_openness',
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'hillshade': 'hillshade_multi',
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}
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# Images RGB (fonds IGN, relief orienté) — pas de colormap
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from lidar_pipeline.rendering import RGB_KEYWORDS
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skip = set(RGB_KEYWORDS)
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for name, _ in VIZ_STEPS:
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if name in skip:
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continue
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cmap_key = name_map.get(name, name)
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assert cmap_key in COLORMAPS, f"Missing colormap for: {name} (looked as {cmap_key})"
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def test_colormap_has_required_keys(self):
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"""Each colormap entry must have cmap, title, legend, description."""
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from lidar_pipeline.rendering import COLORMAPS
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required = {'cmap', 'title', 'legend', 'description'}
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for name, entry in COLORMAPS.items():
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missing = required - set(entry.keys())
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assert not missing, f"Colormap '{name}' missing keys: {missing}"
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class TestTifToPng:
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def test_converts_tif_to_webp(self, tmp_path):
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from lidar_pipeline.rendering import tif_to_png
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tif_file = _make_test_tif(tmp_path)
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result = tif_to_png(tif_file, tmp_path, 5.0)
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assert result is not None
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assert result.exists()
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assert result.suffix == '.avif'
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def test_removes_source_tif(self, tmp_path):
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from lidar_pipeline.rendering import tif_to_png
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tif_file = _make_test_tif(tmp_path)
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assert tif_file.exists()
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tif_to_png(tif_file, tmp_path, 5.0)
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assert not tif_file.exists(), "Source TIF should be deleted after conversion"
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def test_webp_has_content(self, tmp_path):
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from lidar_pipeline.rendering import tif_to_png
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tif_file = _make_test_tif(tmp_path)
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result = tif_to_png(tif_file, tmp_path, 5.0)
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assert result.stat().st_size > 1000 # Must be a real image
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class TestApplyColormap:
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def test_symmetric_mode(self, tmp_path):
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from lidar_pipeline.rendering import COLORMAPS, tif_to_png
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# LRM uses symmetric mode
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data = np.random.default_rng(42).normal(0, 0.5, (50, 50)).astype(np.float32)
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tif_file = _make_test_tif(tmp_path, data)
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result = tif_to_png(tif_file, tmp_path, 5.0)
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assert result is not None
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assert result.exists()
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def test_percentile_mode(self, tmp_path):
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from lidar_pipeline.rendering import tif_to_png
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# Most visualizations use percentile mode
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data = np.random.default_rng(42).normal(50, 10, (50, 50)).astype(np.float32)
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tif_file = _make_test_tif(tmp_path, data)
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result = tif_to_png(tif_file, tmp_path, 5.0)
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assert result is not None
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assert result.exists()
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def test_knots_mode_fixed_transfer(self):
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"""L'étalonnage quantile figé (ondelette) : même valeur → même couleur.
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Les nœuds sont constants (pas de percentile local) : clamp aux
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extrêmes, médiane (1.0) → 0.5, transfert monotone.
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"""
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from lidar_pipeline.rendering import COLORMAPS, _apply_colormap
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info = COLORMAPS['wavelet']
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kv, kt = info['knots'][0.5]
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assert kv[6] == 1.0 and kt[6] == 0.5 # nœud médian
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vals = np.array([0.05, kv[0], 1.0, kv[-1], 50.0], dtype=float)
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out, cmap, *_ = _apply_colormap(vals, 'x_wavelet.tif', resolution=0.5)
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assert cmap == 'inferno'
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assert out[0] == 0.0 and out[1] == 0.01 # clamp bas
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assert abs(out[2] - 0.5) < 1e-9 # médiane → 0.5
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assert out[3] == 0.995 and out[4] == 1.0 # nœud haut, puis clamp au-delà
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# Monotonie (pas d'inversion de teinte)
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s = np.sort(np.random.default_rng(1).uniform(0.2, 3.0, 500))
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o, *_ = _apply_colormap(s, 'x_wavelet.tif', resolution=0.5)
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assert np.all(np.diff(o) >= -1e-12)
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# Les nœuds 0.2 m diffèrent de ceux 0.5 m (calibrations distinctes)
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kv02, _ = info['knots'][0.2]
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assert kv02 != kv
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class TestTifToCrop:
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"""Conversion TIF → dalle cartographique (tif_to_crop)."""
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@staticmethod
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def _write_named_tif(tmp_path, name, arr):
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transform = from_bounds(660000, 6700000, 661000, 6701000, arr.shape[1], arr.shape[0])
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tif_file = tmp_path / name
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with rasterio.open(
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tif_file, 'w', driver='GTiff', height=arr.shape[0], width=arr.shape[1],
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count=1, dtype='float32', crs='EPSG:2154', transform=transform,
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nodata=float('nan'), compress='lzw'
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) as dst:
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dst.write(arr.astype('float32'), 1)
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return tif_file
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def test_nodata_renders_black(self, tmp_path):
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"""Le nodata restant est rendu en noir (comportement historique).
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Les trous du MNT sont comblés en amont (interpolation dans
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create_dtm_fast, tous modes) ; ce qui reste en nodata doit rester
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visible en noir sur la dalle plutôt qu'inventé au rendu.
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"""
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from PIL import Image as PILImage
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from lidar_pipeline.rendering import tif_to_crop
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data = np.random.default_rng(7).normal(50, 10, (40, 40)).astype(np.float32)
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data[15:25, 15:25] = np.nan
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tif_file = self._write_named_tif(tmp_path, "LHD_test_slope.tif", data)
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# WebP lossless : l'encodeur AVIF de l'image « saigne » légèrement les
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# bords du noir même en lossless — on teste la logique nodata→noir,
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# pas les artefacts du codec.
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out = tif_to_crop(tif_file, tmp_path, 5.0, keep_tif=True,
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quality=100, output_format='webp')
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assert out is not None and out.exists()
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rgb = np.asarray(PILImage.open(str(out)).convert('RGB'))
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hole = rgb[15:25, 15:25, :]
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assert np.all(hole < 10), "le nodata doit être rendu en noir"
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def test_without_nodata(self, tmp_path):
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"""Un TIF sans nodata est converti sans crash, taille préservée."""
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from PIL import Image as PILImage
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from lidar_pipeline.rendering import tif_to_crop
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data = np.random.default_rng(7).normal(50, 10, (40, 40)).astype(np.float32)
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tif_file = self._write_named_tif(tmp_path, "LHD_test_slope.tif", data)
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out = tif_to_crop(tif_file, tmp_path, 5.0)
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assert out is not None and out.exists()
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img = PILImage.open(str(out))
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assert img.size == (40, 40)
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class TestCoreTileWindow:
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"""Recadrage des TIF à bande de raccord sur la dalle nominale 1 km."""
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def _write_tif(self, tmp_path, name, bounds, size):
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transform = from_bounds(*bounds, size, size)
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tif_file = tmp_path / name
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with rasterio.open(
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tif_file, 'w', driver='GTiff', height=size, width=size,
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count=1, dtype='float32', crs='EPSG:2154', transform=transform,
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) as dst:
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dst.write(np.zeros((size, size), dtype=np.float32), 1)
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return tif_file
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def test_window_on_buffered_tif(self, tmp_path):
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from lidar_pipeline.rendering import _core_tile_window
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tif = self._write_tif(tmp_path, "LHD_FXX_0638_6628_PTS_LAMB93_IGN69_slope.tif",
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(637900, 6626900, 639100, 6628100), 1200)
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with rasterio.open(tif) as src:
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win = _core_tile_window(tif, src)
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assert win is not None
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assert (win.width, win.height) == (1000, 1000)
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assert (win.col_off, win.row_off) == (100, 100)
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wt = src.window_transform(win)
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assert abs(wt.c - 638000.0) < 1e-6
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assert abs(wt.f - 6628000.0) < 1e-6
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def test_no_window_without_overflow(self, tmp_path):
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"""TIF historique sur les bornes d'en-tête (~999,99 m) : rien à recadrer."""
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from lidar_pipeline.rendering import _core_tile_window
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tif = self._write_tif(tmp_path, "LHD_FXX_0638_6628_PTS_LAMB93_IGN69_slope.tif",
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(638000, 6627000, 638999.99, 6627999.99), 5000)
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with rasterio.open(tif) as src:
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assert _core_tile_window(tif, src) is None
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def test_no_window_for_non_lhd_name(self, tmp_path):
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from lidar_pipeline.rendering import _core_tile_window
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tif = self._write_tif(tmp_path, "test_vis.tif",
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(637900, 6626900, 639100, 6628100), 1200)
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with rasterio.open(tif) as src:
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assert _core_tile_window(tif, src) is None
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