环境变量

api.py

@@ -1,3 +1,4 @@
+import os
 import time
 import threading
 
@@ -9,10 +10,6 @@ from pyorbbecsdk import *
 
 ESC_KEY = 27
 PRINT_INTERVAL = 1  # seconds
-MIN_DEPTH = 500  # mm
-MAX_DEPTH = 4000  # mm
-ROI_WIDTH_CM = 10.0  # cm
-ROI_HEIGHT_CM = 12.0  # cm
 MEDIAN_BLUR_KSIZE = 5  # odd number, 0 to disable
 MORPH_OPEN_KSIZE = 3  # odd number, 0 to disable
 NEAREST_PERCENTILE = 5  # use low percentile to suppress isolated noise (0 for raw min)
@@ -21,6 +18,20 @@ SAMPLE_COUNT = 10
 FRAME_TIMEOUT_MS = 200
 SAMPLE_TIMEOUT_SEC = 8
 
+def _get_env_int(name, default):
+    value = os.getenv(name)
+    if value is None or value.strip() == "":
+        return default
+    try:
+        return int(value)
+    except ValueError:
+        return default
+
+MIN_DEPTH = _get_env_int("MIN_DEPTH", 500)  # mm
+MAX_DEPTH = _get_env_int("MAX_DEPTH", 4000)  # mm
+ROI_WIDTH_CM = _get_env_int("ROI_WIDTH_CM", 10)  # cm
+ROI_HEIGHT_CM = _get_env_int("ROI_HEIGHT_CM", 12)  # cm
+
 app = FastAPI(title="Cargo Height API")