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InvokeAI/tests/backend/tiles/test_tiles.py
skunkworxdark 96a717c4ba In CalculateImageTilesEvenSplitInvocation to have overlap_fraction becomes just overlap. This is now in pixels rather than as a fraction of the tile size. 
Update calc_tiles_even_split() with the same change. Ensuring Overlap is within allowed size

Update even_split tests
2023-12-17 15:10:50 +00:00

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import numpy as np
import pytest
from invokeai.backend.tiles.tiles import (
calc_tiles_even_split,
calc_tiles_min_overlap,
calc_tiles_with_overlap,
merge_tiles_with_linear_blending,
)
from invokeai.backend.tiles.utils import TBLR, Tile
####################################
# Test calc_tiles_with_overlap(...)
####################################
def test_calc_tiles_with_overlap_single_tile():
"""Test calc_tiles_with_overlap() behavior when a single tile covers the image."""
tiles = calc_tiles_with_overlap(image_height=512, image_width=1024, tile_height=512, tile_width=1024, overlap=64)
expected_tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=1024),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
)
]
assert tiles == expected_tiles
def test_calc_tiles_with_overlap_evenly_divisible():
"""Test calc_tiles_with_overlap() behavior when the image is evenly covered by multiple tiles."""
# Parameters chosen so that image is evenly covered by 2 rows, 3 columns of tiles.
tiles = calc_tiles_with_overlap(image_height=576, image_width=1600, tile_height=320, tile_width=576, overlap=64)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=320, left=0, right=576),
overlap=TBLR(top=0, bottom=64, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=512, right=1088),
overlap=TBLR(top=0, bottom=64, left=64, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=1024, right=1600),
overlap=TBLR(top=0, bottom=64, left=64, right=0),
),
# Row 1
Tile(
coords=TBLR(top=256, bottom=576, left=0, right=576),
overlap=TBLR(top=64, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=512, right=1088),
overlap=TBLR(top=64, bottom=0, left=64, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=1024, right=1600),
overlap=TBLR(top=64, bottom=0, left=64, right=0),
),
]
assert tiles == expected_tiles
def test_calc_tiles_with_overlap_not_evenly_divisible():
"""Test calc_tiles_with_overlap() behavior when the image requires 'uneven' overlaps to achieve proper coverage."""
# Parameters chosen so that image is covered by 2 rows and 3 columns of tiles, with uneven overlaps.
tiles = calc_tiles_with_overlap(image_height=400, image_width=1200, tile_height=256, tile_width=512, overlap=64)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=256, left=0, right=512),
overlap=TBLR(top=0, bottom=112, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=256, left=448, right=960),
overlap=TBLR(top=0, bottom=112, left=64, right=272),
),
Tile(
coords=TBLR(top=0, bottom=256, left=688, right=1200),
overlap=TBLR(top=0, bottom=112, left=272, right=0),
),
# Row 1
Tile(
coords=TBLR(top=144, bottom=400, left=0, right=512),
overlap=TBLR(top=112, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=144, bottom=400, left=448, right=960),
overlap=TBLR(top=112, bottom=0, left=64, right=272),
),
Tile(
coords=TBLR(top=144, bottom=400, left=688, right=1200),
overlap=TBLR(top=112, bottom=0, left=272, right=0),
),
]
assert tiles == expected_tiles
@pytest.mark.parametrize(
["image_height", "image_width", "tile_height", "tile_width", "overlap", "raises"],
[
(128, 128, 128, 128, 127, False), # OK
(128, 128, 128, 128, 0, False), # OK
(128, 128, 64, 64, 0, False), # OK
(128, 128, 129, 128, 0, True), # tile_height exceeds image_height.
(128, 128, 128, 129, 0, True), # tile_width exceeds image_width.
(128, 128, 64, 128, 64, True), # overlap equals tile_height.
(128, 128, 128, 64, 64, True), # overlap equals tile_width.
],
)
def test_calc_tiles_with_overlap_input_validation(
image_height: int,
image_width: int,
tile_height: int,
tile_width: int,
overlap: int,
raises: bool,
):
"""Test that calc_tiles_with_overlap() raises an exception if the inputs are invalid."""
if raises:
with pytest.raises(AssertionError):
calc_tiles_with_overlap(image_height, image_width, tile_height, tile_width, overlap)
else:
calc_tiles_with_overlap(image_height, image_width, tile_height, tile_width, overlap)
####################################
# Test calc_tiles_min_overlap(...)
####################################
def test_calc_tiles_min_overlap_single_tile():
"""Test calc_tiles_min_overlap() behavior when a single tile covers the image."""
tiles = calc_tiles_min_overlap(
image_height=512,
image_width=1024,
tile_height=512,
tile_width=1024,
min_overlap=64,
)
expected_tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=1024),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
)
]
assert tiles == expected_tiles
def test_calc_tiles_min_overlap_evenly_divisible():
"""Test calc_tiles_min_overlap() behavior when the image is evenly covered by multiple tiles."""
# Parameters mimic roughly the same output as the original tile generations of the same test name
tiles = calc_tiles_min_overlap(
image_height=576,
image_width=1600,
tile_height=320,
tile_width=576,
min_overlap=64,
)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=320, left=0, right=576),
overlap=TBLR(top=0, bottom=64, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=512, right=1088),
overlap=TBLR(top=0, bottom=64, left=64, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=1024, right=1600),
overlap=TBLR(top=0, bottom=64, left=64, right=0),
),
# Row 1
Tile(
coords=TBLR(top=256, bottom=576, left=0, right=576),
overlap=TBLR(top=64, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=512, right=1088),
overlap=TBLR(top=64, bottom=0, left=64, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=1024, right=1600),
overlap=TBLR(top=64, bottom=0, left=64, right=0),
),
]
assert tiles == expected_tiles
def test_calc_tiles_min_overlap_not_evenly_divisible():
"""Test calc_tiles_min_overlap() behavior when the image requires 'uneven' overlaps to achieve proper coverage."""
# Parameters mimic roughly the same output as the original tile generations of the same test name
tiles = calc_tiles_min_overlap(
image_height=400,
image_width=1200,
tile_height=256,
tile_width=512,
min_overlap=64,
)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=256, left=0, right=512),
overlap=TBLR(top=0, bottom=112, left=0, right=168),
),
Tile(
coords=TBLR(top=0, bottom=256, left=344, right=856),
overlap=TBLR(top=0, bottom=112, left=168, right=168),
),
Tile(
coords=TBLR(top=0, bottom=256, left=688, right=1200),
overlap=TBLR(top=0, bottom=112, left=168, right=0),
),
# Row 1
Tile(
coords=TBLR(top=144, bottom=400, left=0, right=512),
overlap=TBLR(top=112, bottom=0, left=0, right=168),
),
Tile(
coords=TBLR(top=144, bottom=400, left=344, right=856),
overlap=TBLR(top=112, bottom=0, left=168, right=168),
),
Tile(
coords=TBLR(top=144, bottom=400, left=688, right=1200),
overlap=TBLR(top=112, bottom=0, left=168, right=0),
),
]
assert tiles == expected_tiles
def test_calc_tiles_min_overlap_tile_bigger_than_image():
"""Test calc_tiles_min_overlap() behavior when the tile is nigger than the image"""
# Parameters mimic roughly the same output as the original tile generations of the same test name
tiles = calc_tiles_min_overlap(
image_height=1024,
image_width=1024,
tile_height=1408,
tile_width=1408,
min_overlap=128,
)
expected_tiles = [
# single tile
Tile(
coords=TBLR(top=0, bottom=1024, left=0, right=1024),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
),
]
assert tiles == expected_tiles
@pytest.mark.parametrize(
[
"image_height",
"image_width",
"tile_height",
"tile_width",
"min_overlap",
"raises",
],
[
(128, 128, 128, 128, 127, False), # OK
(128, 128, 128, 128, 0, False), # OK
(128, 128, 64, 64, 0, False), # OK
(128, 128, 129, 128, 0, False), # tile_height exceeds image_height defaults to 1 tile.
(128, 128, 128, 129, 0, False), # tile_width exceeds image_width defaults to 1 tile.
(128, 128, 64, 128, 64, True), # overlap equals tile_height.
(128, 128, 128, 64, 64, True), # overlap equals tile_width.
],
)
def test_calc_tiles_min_overlap_input_validation(
image_height: int,
image_width: int,
tile_height: int,
tile_width: int,
min_overlap: int,
raises: bool,
):
"""Test that calc_tiles_min_overlap() raises an exception if the inputs are invalid."""
if raises:
with pytest.raises(AssertionError):
calc_tiles_min_overlap(image_height, image_width, tile_height, tile_width, min_overlap)
else:
calc_tiles_min_overlap(image_height, image_width, tile_height, tile_width, min_overlap)
####################################
# Test calc_tiles_even_split(...)
####################################
def test_calc_tiles_even_split_single_tile():
"""Test calc_tiles_even_split() behavior when a single tile covers the image."""
tiles = calc_tiles_even_split(image_height=512, image_width=1024, num_tiles_x=1, num_tiles_y=1, overlap=64)
expected_tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=1024),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
)
]
assert tiles == expected_tiles
def test_calc_tiles_even_split_evenly_divisible():
"""Test calc_tiles_even_split() behavior when the image is evenly covered by multiple tiles."""
# Parameters mimic roughly the same output as the original tile generations of the same test name
tiles = calc_tiles_even_split(image_height=576, image_width=1600, num_tiles_x=3, num_tiles_y=2, overlap=64)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=320, left=0, right=576),
overlap=TBLR(top=0, bottom=64, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=512, right=1088),
overlap=TBLR(top=0, bottom=64, left=64, right=64),
),
Tile(
coords=TBLR(top=0, bottom=320, left=1024, right=1600),
overlap=TBLR(top=0, bottom=64, left=64, right=0),
),
# Row 1
Tile(
coords=TBLR(top=256, bottom=576, left=0, right=576),
overlap=TBLR(top=64, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=512, right=1088),
overlap=TBLR(top=64, bottom=0, left=64, right=64),
),
Tile(
coords=TBLR(top=256, bottom=576, left=1024, right=1600),
overlap=TBLR(top=64, bottom=0, left=64, right=0),
),
]
assert tiles == expected_tiles
def test_calc_tiles_even_split_not_evenly_divisible():
"""Test calc_tiles_even_split() behavior when the image requires 'uneven' overlaps to achieve proper coverage."""
# Parameters mimic roughly the same output as the original tile generations of the same test name
tiles = calc_tiles_even_split(image_height=400, image_width=1200, num_tiles_x=3, num_tiles_y=2, overlap=64)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=232, left=0, right=440),
overlap=TBLR(top=0, bottom=64, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=232, left=376, right=816),
overlap=TBLR(top=0, bottom=64, left=64, right=64),
),
Tile(
coords=TBLR(top=0, bottom=232, left=752, right=1200),
overlap=TBLR(top=0, bottom=64, left=64, right=0),
),
# Row 1
Tile(
coords=TBLR(top=168, bottom=400, left=0, right=440),
overlap=TBLR(top=64, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=168, bottom=400, left=376, right=816),
overlap=TBLR(top=64, bottom=0, left=64, right=64),
),
Tile(
coords=TBLR(top=168, bottom=400, left=752, right=1200),
overlap=TBLR(top=64, bottom=0, left=64, right=0),
),
]
assert tiles == expected_tiles
def test_calc_tiles_even_split_difficult_size():
"""Test calc_tiles_even_split() behavior when the image is a difficult size to spilt evenly and keep div8."""
# Parameters are a difficult size for other tile gen routines to calculate
tiles = calc_tiles_even_split(image_height=1000, image_width=1000, num_tiles_x=2, num_tiles_y=2, overlap=64)
expected_tiles = [
# Row 0
Tile(
coords=TBLR(top=0, bottom=528, left=0, right=528),
overlap=TBLR(top=0, bottom=64, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=528, left=464, right=1000),
overlap=TBLR(top=0, bottom=64, left=64, right=0),
),
# Row 1
Tile(
coords=TBLR(top=464, bottom=1000, left=0, right=528),
overlap=TBLR(top=64, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=464, bottom=1000, left=464, right=1000),
overlap=TBLR(top=64, bottom=0, left=64, right=0),
),
]
assert tiles == expected_tiles
@pytest.mark.parametrize(
["image_height", "image_width", "num_tiles_x", "num_tiles_y", "overlap", "raises"],
[
(128, 128, 1, 1, 127, False), # OK
(128, 128, 1, 1, 0, False), # OK
(128, 128, 2, 2, 0, False), # OK
(128, 128, 2, 1, 120, True), # overlap equals tile_height.
(128, 128, 1, 2, 120, True), # overlap equals tile_width.
(127, 127, 1, 1, 0, True), # image size must be dividable by 8
],
)
def test_calc_tiles_even_split_input_validation(
image_height: int,
image_width: int,
num_tiles_x: int,
num_tiles_y: int,
overlap: int,
raises: bool,
):
"""Test that calc_tiles_even_split() raises an exception if the inputs are invalid."""
if raises:
with pytest.raises((AssertionError, ValueError)):
calc_tiles_even_split(image_height, image_width, num_tiles_x, num_tiles_y, overlap)
else:
calc_tiles_even_split(image_height, image_width, num_tiles_x, num_tiles_y, overlap)
#############################################
# Test merge_tiles_with_linear_blending(...)
#############################################
@pytest.mark.parametrize("blend_amount", [0, 32])
def test_merge_tiles_with_linear_blending_horizontal(blend_amount: int):
"""Test merge_tiles_with_linear_blending(...) behavior when merging horizontally."""
# Initialize 2 tiles side-by-side.
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=512, left=448, right=960),
overlap=TBLR(top=0, bottom=0, left=64, right=0),
),
]
dst_image = np.zeros((512, 960, 3), dtype=np.uint8)
# Prepare tile_images that match tiles. Pixel values are set based on the tile index.
tile_images = [
np.zeros((512, 512, 3)) + 64,
np.zeros((512, 512, 3)) + 128,
]
# Calculate expected output.
expected_output = np.zeros((512, 960, 3), dtype=np.uint8)
expected_output[:, : 480 - (blend_amount // 2), :] = 64
if blend_amount > 0:
gradient = np.linspace(start=64, stop=128, num=blend_amount, dtype=np.uint8).reshape((1, blend_amount, 1))
expected_output[:, 480 - (blend_amount // 2) : 480 + (blend_amount // 2), :] = gradient
expected_output[:, 480 + (blend_amount // 2) :, :] = 128
merge_tiles_with_linear_blending(
dst_image=dst_image,
tiles=tiles,
tile_images=tile_images,
blend_amount=blend_amount,
)
np.testing.assert_array_equal(dst_image, expected_output, strict=True)
@pytest.mark.parametrize("blend_amount", [0, 32])
def test_merge_tiles_with_linear_blending_vertical(blend_amount: int):
"""Test merge_tiles_with_linear_blending(...) behavior when merging vertically."""
# Initialize 2 tiles stacked vertically.
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=64, left=0, right=0),
),
Tile(
coords=TBLR(top=448, bottom=960, left=0, right=512),
overlap=TBLR(top=64, bottom=0, left=0, right=0),
),
]
dst_image = np.zeros((960, 512, 3), dtype=np.uint8)
# Prepare tile_images that match tiles. Pixel values are set based on the tile index.
tile_images = [
np.zeros((512, 512, 3)) + 64,
np.zeros((512, 512, 3)) + 128,
]
# Calculate expected output.
expected_output = np.zeros((960, 512, 3), dtype=np.uint8)
expected_output[: 480 - (blend_amount // 2), :, :] = 64
if blend_amount > 0:
gradient = np.linspace(start=64, stop=128, num=blend_amount, dtype=np.uint8).reshape((blend_amount, 1, 1))
expected_output[480 - (blend_amount // 2) : 480 + (blend_amount // 2), :, :] = gradient
expected_output[480 + (blend_amount // 2) :, :, :] = 128
merge_tiles_with_linear_blending(
dst_image=dst_image,
tiles=tiles,
tile_images=tile_images,
blend_amount=blend_amount,
)
np.testing.assert_array_equal(dst_image, expected_output, strict=True)
def test_merge_tiles_with_linear_blending_blend_amount_exceeds_vertical_overlap():
"""Test that merge_tiles_with_linear_blending(...) raises an exception if 'blend_amount' exceeds the overlap between
any vertically adjacent tiles.
"""
# Initialize 2 tiles stacked vertically.
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=64, left=0, right=0),
),
Tile(
coords=TBLR(top=448, bottom=960, left=0, right=512),
overlap=TBLR(top=64, bottom=0, left=0, right=0),
),
]
dst_image = np.zeros((960, 512, 3), dtype=np.uint8)
# Prepare tile_images that match tiles.
tile_images = [np.zeros((512, 512, 3)), np.zeros((512, 512, 3))]
# blend_amount=128 exceeds overlap of 64, so should raise exception.
with pytest.raises(AssertionError):
merge_tiles_with_linear_blending(dst_image=dst_image, tiles=tiles, tile_images=tile_images, blend_amount=128)
def test_merge_tiles_with_linear_blending_blend_amount_exceeds_horizontal_overlap():
"""Test that merge_tiles_with_linear_blending(...) raises an exception if 'blend_amount' exceeds the overlap between
any horizontally adjacent tiles.
"""
# Initialize 2 tiles side-by-side.
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=0, left=0, right=64),
),
Tile(
coords=TBLR(top=0, bottom=512, left=448, right=960),
overlap=TBLR(top=0, bottom=0, left=64, right=0),
),
]
dst_image = np.zeros((512, 960, 3), dtype=np.uint8)
# Prepare tile_images that match tiles.
tile_images = [np.zeros((512, 512, 3)), np.zeros((512, 512, 3))]
# blend_amount=128 exceeds overlap of 64, so should raise exception.
with pytest.raises(AssertionError):
merge_tiles_with_linear_blending(dst_image=dst_image, tiles=tiles, tile_images=tile_images, blend_amount=128)
def test_merge_tiles_with_linear_blending_tiles_overflow_dst_image():
"""Test that merge_tiles_with_linear_blending(...) raises an exception if any of the tiles overflows the
dst_image.
"""
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
)
]
dst_image = np.zeros((256, 512, 3), dtype=np.uint8)
# Prepare tile_images that match tiles.
tile_images = [np.zeros((512, 512, 3))]
with pytest.raises(ValueError):
merge_tiles_with_linear_blending(dst_image=dst_image, tiles=tiles, tile_images=tile_images, blend_amount=0)
def test_merge_tiles_with_linear_blending_mismatched_list_lengths():
"""Test that merge_tiles_with_linear_blending(...) raises an exception if the lengths of 'tiles' and 'tile_images'
do not match.
"""
tiles = [
Tile(
coords=TBLR(top=0, bottom=512, left=0, right=512),
overlap=TBLR(top=0, bottom=0, left=0, right=0),
)
]
dst_image = np.zeros((256, 512, 3), dtype=np.uint8)
# tile_images is longer than tiles, so should cause an exception.
tile_images = [np.zeros((512, 512, 3)), np.zeros((512, 512, 3))]
with pytest.raises(ValueError):
merge_tiles_with_linear_blending(dst_image=dst_image, tiles=tiles, tile_images=tile_images, blend_amount=0)
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