# getNmsIouThreshold method

int getNmsIouThreshold()

Gets the non-maximum suppression (NMS) intersection-over-union (IOU) threshold, in the range is (0;100). Hint: Default value is 40. Note: Setting a high threshold allows to detect more overlapping faces which can be useful in a multi-face scenario. On the contrary, in a portrait scenario, a low NMS IOU threshold should be preferred.

return Non-maximum suppression (NMS) intersection-over-union (IOU) threshold, in the range is (0;100). throws FaceException An error has occurred during Face Library execution.

## Implementation

    int getNmsIouThreshold() {
      Pointer<Int> pNmsIouThreshold = calloc();
      try {
        var err = faceSDK.id3FaceDetector_GetNmsIouThreshold(_pHandle.value, pNmsIouThreshold);
        if (err != FaceError.success.value) {
          throw FaceException(err);
        }
        final vNmsIouThreshold = pNmsIouThreshold.value;
        return vNmsIouThreshold;
      } finally {
        calloc.free(pNmsIouThreshold);
      }
    }