# getMinimumHeadHeightRatio method

int getMinimumHeadHeightRatio()

Gets the minimum distance between the base of the chin and the crown is less than 80% of the total height of the image. For ICAO compliance, this distance must be in the range 60 to 90. Hint: Default value is 60.

return Minimum distance between the base of the chin and the crown is less than 80% of the total height of the image. throws FaceException An error has occurred during Face Library execution.

## Implementation

    int getMinimumHeadHeightRatio() {
      Pointer<Int> pMinimumHeadHeightRatio = calloc();
      try {
        var err = faceSDK.id3FacePortraitProcessor_GetMinimumHeadHeightRatio(_pHandle.value, pMinimumHeadHeightRatio);
        if (err != FaceError.success.value) {
          throw FaceException(err);
        }
        final vMinimumHeadHeightRatio = pMinimumHeadHeightRatio.value;
        return vMinimumHeadHeightRatio;
      } finally {
        calloc.free(pMinimumHeadHeightRatio);
      }
    }