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Update dummy test and fix sample coords

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This commit is contained in:
Joe Knapper 2025-09-25 16:14:13 +01:00
parent 16bc7aeede
commit bfe0064ce8
2 changed files with 17 additions and 37 deletions
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52
src/openflexure_microscope_server/things/camera/simulation.py
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@ -53,7 +53,7 @@ class SimulatedCamera(BaseCamera):
def __init__(
self,
shape: tuple[int, int, int] = (616, 820, 3),
glyph_shape: tuple[int, int, int] = (151, 151, 3),
glyph_shape: tuple[int, int, int] = (121, 121, 3),
canvas_shape: tuple[int, int, int] = (3000, 4000, 3),
sample_limits: Optional[tuple[int, int]] = (1000, 1500),
frame_interval: float = 0.1,
@ -85,7 +85,7 @@ class SimulatedCamera(BaseCamera):
def generate_sprites(self) -> None:
"""Generate sprites to populate the image."""
sprite_sizes = [10, 21, 36, 40, 50, 70]
sprite_sizes = [10, 21, 36, 40, 50]
self.sprites = []
channel_block = np.zeros(self.glyph_shape[0:2])
@ -122,17 +122,10 @@ class SimulatedCamera(BaseCamera):
:param n_blobs: The number of blobs to generate.
"""
self.blobs = np.zeros((n_blobs, 3))
w = np.max(self.glyph_shape)
sample_centre_x, sample_centre_y = self.sample_limits[1], self.sample_limits[0]
# Coordinates relative to centre (0,0)
self.blobs[:, 0] = RNG.uniform(
-sample_centre_x + w / 2, sample_centre_x - w / 2, n_blobs
)
self.blobs[:, 1] = RNG.uniform(
-sample_centre_y + w / 2, sample_centre_y - w / 2, n_blobs
)
self.blobs[:, 0] = RNG.uniform(w // 2, self.sample_limits[1] - w // 2, n_blobs)
self.blobs[:, 1] = RNG.uniform(w // 2, self.sample_limits[0] - w // 2, n_blobs)
self.blobs[:, 2] = RNG.choice(len(self.sprites), n_blobs)
def generate_canvas(self) -> None:
@ -147,14 +140,9 @@ class SimulatedCamera(BaseCamera):
self.blank_canvas[:, :, 2] *= BG_COLOR[2]
self.canvas = self.blank_canvas.copy()
canvas_h, canvas_w, _ = self.canvas.shape
canvas_centre_x, canvas_centre_y = canvas_w // 2, canvas_h // 2
for blob_x, blob_y, sprite_index in self.blobs:
canvas_blob_x = int(round(blob_x + canvas_centre_x))
canvas_blob_y = int(round(blob_y + canvas_centre_y))
self.draw_sprite_on_canvas(
self.sprites[int(sprite_index)], canvas_blob_y, canvas_blob_x
self.sprites[int(sprite_index)], int(blob_y), int(blob_x)
)
self.canvas[self.canvas < 0] = 0
@ -180,26 +168,18 @@ class SimulatedCamera(BaseCamera):
bottom = min(centre_y + (sprite_h - sprite_h // 2), canvas_h)
right = min(centre_x + (sprite_w - sprite_w // 2), canvas_w)
# Size of the sprite
sprite_top = 0
sprite_left = 0
sprite_bottom = self.glyph_shape[0]
sprite_right = self.glyph_shape[1]
# Extract regions
canvas_region = self.canvas[top:bottom, left:right]
sprite_region = sprite[sprite_top:sprite_bottom, sprite_left:sprite_right]
# Ensure shapes are the same size before subtraction - can't have one bigger than the other
# In the case of a mismatch, use the smaller region
if canvas_region.shape != sprite_region.shape:
min_h = min(canvas_region.shape[0], sprite_region.shape[0])
min_w = min(canvas_region.shape[1], sprite_region.shape[1])
# In the case of a mismatch, use the smaller region.
if canvas_region.shape != sprite.shape:
min_h = min(canvas_region.shape[0], sprite.shape[0])
min_w = min(canvas_region.shape[1], sprite.shape[1])
self.canvas[top : top + min_h, left : left + min_w] -= sprite[
:min_h, :min_w
]
else:
self.canvas[top:bottom, left:right] -= sprite_region
self.canvas[top:bottom, left:right] -= sprite
def generate_image(self, pos: tuple[int, int, int]) -> np.ndarray:
"""Generate an image with blobs based on supplied coordinates.
@ -210,8 +190,8 @@ class SimulatedCamera(BaseCamera):
image_width, image_height, _ = self.shape
pos = tuple(x * s for x, s in zip(pos, RATIO, strict=True))
top_left = (
int(pos[0]) - image_width // 2 - canvas_width // 2,
int(pos[1]) - image_height // 2 - canvas_height // 2,
int(pos[0]) - image_width // 2 + self.sample_limits[0] // 2,
int(pos[1]) - image_height // 2 + self.sample_limits[1] // 2,
)
# Create index list with modulo rather than slicing to handle wrapping at the
# canvas edge.
@ -354,8 +334,8 @@ class SimulatedCamera(BaseCamera):
It's likely to be highly inefficient - raw and/or uncompressed captures using
binary image formats will be added in due course.
:param stream_name: ignored, provided for compatibility with other server modes
:param wait: ignored, provided for compatibility with other server modes
:param main_resolution: Currently ignored, this argument exists to ensure consistent API across camera Things.
:param buffer_count: Currently ignored, this argument exists to ensure consistent API across camera Things.
"""
if wait is not None:
LOGGER.warning("Simulation camera has no wait option. Use None.")
@ -371,8 +351,8 @@ class SimulatedCamera(BaseCamera):
It is used for capture to memory.
:param stream_name: ignored, provided for compatibility with other server modes
:param wait: ignored, provided for compatibility with other server modes
:param main_resolution: Currently ignored, this argument exists to ensure consistent API across camera Things.
:param buffer_count: Currently ignored, this argument exists to ensure consistent API across camera Things.
"""
if wait is not None:
LOGGER.warning("Simulation camera has no wait option. Use None.")