zbar_ros, cv_camera - dirty reads of barcodes

edit

Hello everybody. I'm trying to read barcodes using cv_camera and zbar_ros. Below you can read what I am doing.

$ rosrun cv_camera cv_camera_node /cv_camera/image_raw:=image

[ INFO] [1496521778.337223498]: using default calibration URL
[ INFO] [1496521778.337350789]: camera calibration URL: file:///home/wojtas/.ros/camera_info/camera.yaml
[ INFO] [1496521778.337442923]: Unable to open camera calibration file [/home/wojtas/.ros/camera_info/camera.yaml]
[ WARN] [1496521778.337476985]: Camera calibration file /home/wojtas/.ros/camera_info/camera.yaml not found.

$ rosrun zbar_ros barcode_reader_node 

[ INFO] [1496521948.392267314]: Initializing nodelet with 4 worker threads.

After trying reading barcode from my bottle of beer :) I get

$ rostopic echo /barcode

data: 4321136100317
---
data: 7611166100317
---
data: 7225226100317
---
data: 8639213100317
---
data: 8342113100317

When I'm using zbarcam application and reading the same barcode I get

$ zbarcam

EAN-13:5900699100317
EAN-13:5900699100317
EAN-13:5900699100317

So I'm very confused. Why barcodes from /barcode topic are different from original barcode? Any ideas?

Additional info:

$ roscore 
...
ros_comm version 1.12.7

SUMMARY
========
PARAMETERS
 * /rosdistro: kinetic
 * /rosversion: 1.12.7

$ rostopic list
/barcode
/camera_info
/image
/image/compressed
/image/compressed/parameter_descriptions
/image/compressed/parameter_updates
/image/compressedDepth
/image/compressedDepth/parameter_descriptions
/image/compressedDepth/parameter_updates
/image/theora
/image/theora/parameter_descriptions
/image/theora/parameter_updates
/rosout
/rosout_agg