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I have approximately 2000 images with QR codes in them, each representing exactly one letter. Does anyone know a good open source framework in Java (Java prefered, but any other language is fine, too) to decode them?
I have only found shareware frameworks and web services that won't allow me to upload 2000 images to their server.
Android has the "Barcode Scanner" app that can handle QR codes. The source code is available here. Being Android, it's written in Java (although using the Android API rather than J2SE, but that it should be trivial to port the part of the source that decodes the QR code).
I'm not sure about the licensing, you may want to check with ZXing before you help yourself to their code and use it in your own project.
ZXing is the de facto standard. It has pure Java bindings and a web server you can run. Look in zxingorg/ or try it at zxing.org/w/decode.jspx.
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I have to develop trade capture modules in JAVA using Financial Information eXchange(FIX) Protocol 5.0 SP2.
Although I've tried to look up some tutorials, I cannot get any sample source codes.
How can I get some sample source codes in JAVA using FIX protocol 5.0 SP2?
FIX is a protocol, not a library, so searching for "FIX source code" is misguided and won't get you anywhere.
You need to decide on a library or engine that implements the FIX protocol, and then find examples apps that use it.
For Java, I can suggest QuickFIX/j. There's plenty of docs on that site, the source repo has demo apps.
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Since various OCR Api's like Tesseract ,Blink ocr and abby fine reader dont do much with scribed text reading.If there is any good opensource OCR API or SDK (like a jar ) which can be used to read scribed card text in android or java and also I found card.io SDK for android.Is it good enough though.
Please explain with code examples.
I think I found a perfect match,an SDK called card.io and it comes for both android and ios versions and it's free I guess.So I am going to try it.
Mainly I want to make it read the scribed text on cards.
The demo published on their site card.io seems to be promising.Though the sdk just scans the info and you have to process it to a gateway.
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I am trying to create an application which entails communication with an OPC HDA server to get historical values of tags.
I was wondering if there are any free/open source libraries available in Java which can help me do that.
I have already tried the following options:
Integration Objects Java Wrapper: It internally uses JNI. When client and server are not co-located, it is difficult to get it working. It is licensed.
jInterop: Implements the MSRPC protocol and thus does not rely on JNI. Is portable. However, the OPC HDA interfaces are quite complex and I was not able to call them via jInterop. Also the errors that it throws are quite obscure, so troubleshooting is a major issue with this library. The call that I was not able to get working was the IOPCHDA_SyncRead::ReadRaw.
For the reasons stated above, I am not keen on using both these libraries.
Any help/pointers will be greatly appreciated.
Thanks,
Saurabh
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Can anyone recommend a PHP library (if one exist) that will generate and decode QR codes? This seems to do the job: http://code.google.com/p/zxing/ but it is in Java. If I have to use ZXing, how do I make it work from PHP?
Looks like PHP QR Code will do what you want.
If you're willing to work over HTTP:
There is a web-based encoder from zxing at http://zxing.org/w/decode.jspx. I don't suggest you use it directly, but since the source is available in the open-source project under zxingorg/, you can easily run your own. Then you can decode QR codes by POSTing the image data to the server over HTTP.
For encoding, likewise, you could just use the Google Chart Server, which has generated QR codes for a long time. Look at http://zxing.appspot.com/generator -- it will show you the image URL pointing to the chart server that makes the image. You can just use the same to grab encoded images in PHP.
Zbar at http://zbar.sourceforge.net/ can decode qr codes, and it can be compiled into at php extension with the PHP wrapper at https://github.com/mkoppanen/php-zbarcode.
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Can Someone suggest me a good open source java library to read ECG data in MFER / HL7 / Other formats?
There are a number of options for a java library that parses HL7. For example, you could use the HAPI library, available on sourceforge at http://hl7api.sourceforge.net/. There is also a .NET version of that library at http://nhapi.sourceforge.net/home.php, for those that prefer that platform. Another Java-based option is HL7Comm at http://nule.org/wp/?page_id=63.
More options can be found on the Wikipedia page at http://en.wikipedia.org/wiki/Health_Level_7#Open_source_tools, and at http://www.hl7.org.au/HL7-Tools.htm.
For ECG processing in general, see the OpenECG portal at http://www.openecg.net/.
One of the standard ECG software analysis libraries is WFDB and PhysioNet:
http://www.physionet.org/physiotools/wag/wag.htm
Two American National Standards, ANSI/AAMI EC38:1998 (Ambulatory Electrocardiographs) and ANSI/AAMI EC57:1998 (Testing and Reporting Performance Results of Cardiac Rhythm and ST Segment Measurement Algorithms) require the use of several of the WFDB applications for evaluation of certain devices and algorithms.
There are wrappers written, so you can use Java to access the code:
http://www.physionet.org/physiotools/wfdb-swig.shtml