def testNewAndWriteCrop():
imagePath = datastore.fetch('sample_image.ptif')
source = large_image.open(imagePath)
out = large_image_source_vips.new()
assert out.crop is None
out.crop = 10, 10, 2000, 2000
assert out.crop is not None
out.crop = None
assert out.crop is None
with pytest.raises(TileSourceError):
out.crop = -1, -1, -1, -1
out.crop = 10, 10, 2000, 2000
for tile in source.tileIterator(
format=large_image.constants.TILE_FORMAT_NUMPY,
region=dict(right=4000, bottom=2000),
):
out.addTile(tile['tile'], x=tile['x'], y=tile['y'])
tmpdir = tempfile.mkdtemp()
outputPath = os.path.join(tmpdir, 'temp.tiff')
try:
out.write(outputPath)
result = large_image.open(outputPath)
resultMetadata = result.getMetadata()
assert resultMetadata['sizeX'] == 2000
assert resultMetadata['sizeY'] == 1990
finally:
shutil.rmtree(tmpdir)
def testNewAndWrite():
imagePath = datastore.fetch('sample_image.ptif')
source = large_image.open(imagePath)
out = large_image_source_vips.new()
for tile in source.tileIterator(
format=large_image.constants.TILE_FORMAT_NUMPY,
region=dict(right=4000, bottom=2000),
):
out.addTile(tile['tile'], x=tile['x'], y=tile['y'])
assert out.bandFormat == pyvips.enums.BandFormat.UCHAR
assert out.bandRanges['min'][0] > 10
assert out.mm_x is None
assert out.mm_y is None
out.mm_x = source.getNativeMagnification()['mm_x']
out.mm_y = source.getNativeMagnification()['mm_y']
assert out.mm_x == 0.00025
assert out.mm_y == 0.00025
tmpdir = tempfile.mkdtemp()
outputPath = os.path.join(tmpdir, 'temp.tiff')
try:
out.write(outputPath)
assert os.path.getsize(outputPath) > 50000
result = large_image.open(outputPath)
resultMetadata = result.getMetadata()
assert resultMetadata['sizeX'] == 4000
finally:
shutil.rmtree(tmpdir)
def testNewAndWriteLossless():
imagePath = datastore.fetch('sample_image.ptif')
source = large_image.open(imagePath)
out = large_image_source_vips.new()
for tile in source.tileIterator(
format=large_image.constants.TILE_FORMAT_NUMPY,
region=dict(right=4000, bottom=2000),
):
out.addTile(tile['tile'], x=tile['x'], y=tile['y'])
tmpdir = tempfile.mkdtemp()
outputPath = os.path.join(tmpdir, 'temp.tiff')
try:
out.write(outputPath, lossy=False)
assert os.path.getsize(outputPath) > 50000
result = large_image.open(outputPath)
resultMetadata = result.getMetadata()
assert resultMetadata['sizeX'] == 4000
finally:
shutil.rmtree(tmpdir)