diff --git a/devTools/calibrationUtils.py b/devTools/calibrationUtils.py
index 340a7b982f..afd9fbc410 100644
--- a/devTools/calibrationUtils.py
+++ b/devTools/calibrationUtils.py
@@ -24,14 +24,6 @@ class JsonMatOfDoubles:
     data: list[float]
 
 
-@dataclass
-class JsonMat:
-    rows: int
-    cols: int
-    type: int
-    data: str  # Base64-encoded PNG data
-
-
 @dataclass
 class Point2:
     x: float
@@ -84,8 +76,6 @@ class Observation:
     # If we should use this observation when re-calculating camera calibration
     includeObservationInCalibration: bool
     snapshotName: str
-    # The actual image the snapshot is from
-    snapshotData: JsonMat
 
 
 @dataclass
@@ -206,14 +196,6 @@ def from_dict(cls, dict):
         if not os.path.exists(output_folder):
             os.makedirs(output_folder)
 
-        # Decode each image and save it as a png
-        for obs in camera_cal_data.observations:
-            image = obs.snapshotData.data
-            decoded_data = base64.b64decode(image)
-            np_data = np.frombuffer(decoded_data, np.uint8)
-            img = cv2.imdecode(np_data, cv2.IMREAD_UNCHANGED)
-            cv2.imwrite(f"{output_folder}/{obs.snapshotName}", img)
-
         # And create a VNL file for use with mrcal
         with open(f"{output_folder}/corners.vnl", "w+") as vnl_file:
             vnl_file.write("# filename x y level\n")