I need help about barcode reader

I am developing a barcode reader integrated desktop application using C#. I tried ZXing for barcode reading but it fails to detect barcodes for attached images. So I'm searching out help from experienced developers. Actually you don't need any coding for this job. I want you to find A FREE BARCODE SDK which can read the attached images. So if you have experience in barcode readers, you can only test your past works for the attached images. Or if you have an idea to read them successfully using ZXing (maybe using some filters), that will be better for me. Thanks.