def test_simple_tile(self):
"""
SCENARIO: create a simple monochromatic 2x2 tiled image
"""
data = fixtures.skimage.data.moon()
h, w = data.shape
th, tw = h // 2, w // 2
fp = libtiff.open(self.temp_tiff_filename, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:w].copy())
libtiff.writeEncodedTile(fp, 2, data[th:h, :tw].copy())
libtiff.writeEncodedTile(fp, 3, data[th:h, tw:w].copy())
libtiff.close(fp)
fp = libtiff.open(self.temp_tiff_filename)
tile = np.zeros((th, tw), dtype=np.uint8)
actual_data = np.zeros((h, w), dtype=np.uint8)
libtiff.readEncodedTile(fp, 0, tile)
actual_data[:th, :tw] = tile
libtiff.readEncodedTile(fp, 1, tile)
actual_data[:th, tw:w] = tile
libtiff.readEncodedTile(fp, 2, tile)
actual_data[th:h, :tw] = tile
libtiff.readEncodedTile(fp, 3, tile)
actual_data[th:h, tw:w] = tile
libtiff.close(fp)
np.testing.assert_array_equal(data, actual_data)
def setup_minisblack_2x2_partial_tiles(cls, path):
"""
SCENARIO: create a simple monochromatic 2x2 tiled image with partial
tiles.
"""
data = fixtures.skimage.data.moon()
h, w = 480, 480
th, tw = 256, 256
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', h)
libtiff.setField(fp, 'ImageWidth', w)
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:w].copy())
libtiff.writeEncodedTile(fp, 2, data[th:h, :tw].copy())
libtiff.writeEncodedTile(fp, 3, data[th:h, tw:w].copy())
libtiff.close(fp)
cls.minisblack_2x2_partial_tiles_data = data[:h, :w]
cls.minisblack_2x2_partial_tiles_path = path
def test_floating_point(self):
"""
SCENARIO: The sample format is 32bit floating point.
EXPECTED RESULT: RuntimeError
"""
data = fixtures.skimage.data.moon().astype(np.float32)
h, w = data.shape
th, tw = h // 2, w // 2
fp = libtiff.open(self.temp_tiff_filename, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'SampleFormat', libtiff.SampleFormat.IEEEFP)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 32)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:w].copy())
libtiff.writeEncodedTile(fp, 2, data[th:h, :tw].copy())
libtiff.writeEncodedTile(fp, 3, data[th:h, tw:w].copy())
libtiff.close(fp)
with Tiff2Jp2k(self.temp_tiff_filename, self.temp_jp2_filename) as j:
with self.assertRaises(RuntimeError):
j.run()
def setup_minisblack_spp1(cls, path):
"""
SCENARIO: create a simple monochromatic 2x2 tiled image
"""
data = fixtures.skimage.data.moon()
h, w = data.shape
th, tw = h // 2, w // 2
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:w].copy())
libtiff.writeEncodedTile(fp, 2, data[th:h, :tw].copy())
libtiff.writeEncodedTile(fp, 3, data[th:h, tw:w].copy())
libtiff.close(fp)
# now read it back
fp = libtiff.open(path)
tile = np.zeros((th, tw), dtype=np.uint8)
actual_data = np.zeros((h, w), dtype=np.uint8)
libtiff.readEncodedTile(fp, 0, tile)
actual_data[:th, :tw] = tile
libtiff.readEncodedTile(fp, 1, tile)
actual_data[:th, tw:w] = tile
libtiff.readEncodedTile(fp, 2, tile)
actual_data[th:h, :tw] = tile
libtiff.readEncodedTile(fp, 3, tile)
actual_data[th:h, tw:w] = tile
libtiff.close(fp)
cls.minisblack_spp1_data = actual_data
cls.minisblack_spp1_path = path
def setup_rgb(cls, path):
"""
SCENARIO: create a simple color 2x2 tiled image
"""
data = fixtures.skimage.data.astronaut()
h, w, z = data.shape
th, tw = h // 2, w // 2
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.RGB)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 3)
libtiff.setField(fp, 'PlanarConfig', libtiff.PlanarConfig.CONTIG)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw, :].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:w, :].copy())
libtiff.writeEncodedTile(fp, 2, data[th:h, :tw, :].copy())
libtiff.writeEncodedTile(fp, 3, data[th:h, tw:w, :].copy())
libtiff.close(fp)
# now read it back
fp = libtiff.open(path)
tile = np.zeros((th, tw, 3), dtype=np.uint8)
actual_data = np.zeros((h, w, 3), dtype=np.uint8)
libtiff.readEncodedTile(fp, 0, tile)
actual_data[:th, :tw, :] = tile
libtiff.readEncodedTile(fp, 1, tile)
actual_data[:th, tw:w, :] = tile
libtiff.readEncodedTile(fp, 2, tile)
actual_data[th:h, :tw, :] = tile
libtiff.readEncodedTile(fp, 3, tile)
actual_data[th:h, tw:w, :] = tile
libtiff.close(fp)
cls.astronaut_data = actual_data
cls.astronaut_tif = path
def setup_minisblack_3strip_partial_last_strip(cls, path):
"""
SCENARIO: create a simple monochromatic 3-strip image
"""
data = fixtures.skimage.data.moon()
data = data[:480, :480]
h, w = data.shape
# instead of 160, this will cause a partially empty last strip
rps = 170
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'RowsPerStrip', rps)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.setField(fp, 'PlanarConfig', libtiff.PlanarConfig.CONTIG)
libtiff.writeEncodedStrip(fp, 0, data[:rps, :].copy())
libtiff.writeEncodedStrip(fp, 1, data[rps:, :].copy())
data2 = np.vstack((data[340:480, :], np.zeros((30, 480),
dtype=np.uint8)))
libtiff.writeEncodedStrip(fp, 2, data2)
libtiff.close(fp)
cls.minisblack_3strip_partial_last_strip = path
def setup_minisblack_3strip(cls, path):
"""
SCENARIO: create a simple monochromatic 3-strip image. The strips
evenly divide the image.
"""
data = fixtures.skimage.data.moon()
data = data[:480, :480]
h, w = data.shape
rps = h // 3
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'RowsPerStrip', rps)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.setField(fp, 'PlanarConfig', libtiff.PlanarConfig.CONTIG)
libtiff.writeEncodedStrip(fp, 0, data[:rps, :].copy())
libtiff.writeEncodedStrip(fp, 1, data[rps:rps * 2, :].copy())
libtiff.writeEncodedStrip(fp, 2, data[rps * 2:rps * 3, :].copy())
libtiff.close(fp)
cls.minisblack_3_full_strips_path = path
def setup_rgb_evenly_stripped(cls, path):
"""
SCENARIO: create a simple RGB stripped image, stripsize of 32
"""
j = Jp2k(glymur.data.goodstuff())
data = j[:]
h, w, spp = data.shape
rps = 32
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.RGB)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'RowsPerStrip', rps)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', spp)
libtiff.setField(fp, 'PlanarConfig', libtiff.PlanarConfig.CONTIG)
for stripnum in range(25):
row = rps * stripnum
stripdata = data[row:row + rps, :, :].copy()
libtiff.writeEncodedStrip(fp, stripnum, stripdata)
libtiff.close(fp)
cls.goodstuff_data = data
cls.goodstuff_path = path
def test_cmyk(self):
"""
Scenario: CMYK (or separated) is not a supported colorspace.
Expected result: RuntimeError
"""
data = fixtures.skimage.data.moon()
data = np.dstack((data, data))
h, w, spp = data.shape
# instead of 160, this will cause a partially empty last strip
rps = 512
fp = libtiff.open(self.temp_tiff_filename, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.SEPARATED)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'RowsPerStrip', rps)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', spp)
libtiff.setField(fp, 'PlanarConfig', libtiff.PlanarConfig.CONTIG)
libtiff.setField(fp, 'InkSet', libtiff.InkSet.MULTIINK)
libtiff.writeEncodedStrip(fp, 0, data.copy())
libtiff.close(fp)
with Tiff2Jp2k(self.temp_tiff_filename, self.temp_jp2_filename) as j:
with warnings.catch_warnings():
# weird warning about extra samples
warnings.simplefilter('ignore')
with self.assertRaises(RuntimeError):
j.run()
def setup_minisblack_3x3(cls, path):
"""
SCENARIO: create a simple monochromatic 3x3 tiled image
"""
data = fixtures.skimage.data.moon()
data = data[:480, :480]
h, w = data.shape
th, tw = h // 3, w // 3
fp = libtiff.open(path, mode='w')
libtiff.setField(fp, 'Photometric', libtiff.Photometric.MINISBLACK)
libtiff.setField(fp, 'Compression', libtiff.Compression.DEFLATE)
libtiff.setField(fp, 'ImageLength', data.shape[0])
libtiff.setField(fp, 'ImageWidth', data.shape[1])
libtiff.setField(fp, 'TileLength', th)
libtiff.setField(fp, 'TileWidth', tw)
libtiff.setField(fp, 'BitsPerSample', 8)
libtiff.setField(fp, 'SamplesPerPixel', 1)
libtiff.writeEncodedTile(fp, 0, data[:th, :tw].copy())
libtiff.writeEncodedTile(fp, 1, data[:th, tw:tw * 2].copy())
libtiff.writeEncodedTile(fp, 2, data[:th, tw * 2:w].copy())
libtiff.writeEncodedTile(fp, 3, data[th:th * 2, :tw].copy())
libtiff.writeEncodedTile(fp, 4, data[th:th * 2, tw:tw * 2].copy())
libtiff.writeEncodedTile(fp, 5, data[th:th * 2, tw * 2:w].copy())
libtiff.writeEncodedTile(fp, 6, data[2 * th:h, :tw].copy())
libtiff.writeEncodedTile(fp, 7, data[2 * th:h, tw:tw * 2].copy())
libtiff.writeEncodedTile(fp, 8, data[2 * th:h, tw * 2:w].copy())
libtiff.close(fp)
cls.minisblack_3x3_data = data
cls.minisblack_3x3_tif = path