diff --git a/app/src/main/java/com/example/cameraxtestappjava/segpass/SegpassCamera.java b/app/src/main/java/com/example/cameraxtestappjava/segpass/SegpassCamera.java
index 49bd276..e3c1be4 100644
--- a/app/src/main/java/com/example/cameraxtestappjava/segpass/SegpassCamera.java
+++ b/app/src/main/java/com/example/cameraxtestappjava/segpass/SegpassCamera.java
@@ -275,7 +275,8 @@ public class SegpassCamera {
             mBackgroundThread.join();
             mBackgroundThread = null;
             mBackgroundHandler = null;
-        } catch (Exception e) {
+        } catch (InterruptedException e) {
+            mBackgroundThread.interrupt();
             Log.d(TAG, "InterruptedException@stopBackgroundThread(): " + e.getMessage());
         }
     }
@@ -515,7 +516,8 @@ public class SegpassCamera {
         } catch (CameraAccessException e) {
             Log.e(TAG, "CameraAccessException@openCamera(): " + e.getMessage());
             mCameraCallback.onCameraInitError(e.getMessage());
-        } catch (Exception e) {
+        } catch (InterruptedException e) {
+            mBackgroundThread.interrupt();
             Log.e(TAG, "InterruptedException@openCamera(): " + e.getMessage());
         }
     }
@@ -538,7 +540,8 @@ public class SegpassCamera {
                 mImageReader.close();
                 mImageReader = null;
             }
-        } catch (Exception e) {
+        } catch (InterruptedException e) {
+            mBackgroundThread.interrupt();
             Log.e(TAG, "InterruptedException@closeCamera(): " + e.getMessage());
         } finally {
             mCameraOpenCloseLock.release();