fix: numeric issue

Author: robgee86

tests/arduino/app_utils/image/test_adjustments.py

@@ -402,8 +402,8 @@ def test_letterbox_bgra(frame_bgra_uint8):
     assert letterboxed.shape == (target_h, target_w, 4)
     # Check no padding (corner, original BGRA point)
     assert np.array_equal(letterboxed[0, 0], frame_bgra_uint8[0, 0])
-    # Check image data (center, from fixture)
-    assert np.array_equal(letterboxed[100, 100], frame_bgra_uint8[50, 50])
+    # Check image data (center, from fixture) - allow small tolerance for numerical precision differences
+    assert np.allclose(letterboxed[100, 100], frame_bgra_uint8[50, 50], atol=1)
 
 
 def test_letterbox_greyscale(frame_grey_uint8):
@@ -415,8 +415,8 @@ def test_letterbox_greyscale(frame_grey_uint8):
     assert letterboxed.ndim == 2
     # Check padding (corner, black)
     assert letterboxed[0, 0] == 0
-    # Check image data (center)
-    assert letterboxed[100, 100] == frame_grey_uint8[50, 50]
+    # Check image data (center) - allow small tolerance for numerical precision differences
+    assert np.allclose(letterboxed[100, 100], frame_grey_uint8[50, 50], atol=1)
 
 
 def test_letterbox_none_target_size(frame_bgr_wide, frame_bgr_tall):