barcode

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I'm printing some QR codes (from a Ruby script) writing ESC/POS commands to a Epson TM-T20 thermal printer. BTW, I'm writing a simple ESC/POS commands printer "driver". The printer I'm using an Epson TM-T20 (USB interface) I'm doing some tests from a Windows 7 host, using serialport gem. All fine about writing ESC/POS commands for print formatted texts and also linear barcodes, but I have problems uinderstanding the command protocol to print QR CODES, using the only available documentation supplyied by Epson (as far as I know), see: http://www.novopos.ch/client/EPSON/TM-T20/TM-T20_eng_qr.pdf

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; namespace EAN13 { class Program { static void Main(string[] args) { int h = 15; int w = 4; Bitmap img = new Bitmap(w * 130, h * 60); //pictureBox1.Image = (Image)img; Graphics g = Graphics.FromImage(img); g.FillRectangle(Brushes.White, 0, 0, w * 130, h * 60); Pen p = new Pen(Color.White, 0); Random rd = new Random(); for (int y = 0; y < h; y++) { for (int x = 0; x < w; x++) { long v1 = rd.Next(100000, 999999); //只限于:十二位十进制数; long v2 = rd

Code to generate Qr code using zxing is --- It takes string data and the imageview This works just fine private void generateQRCode_general(String data, ImageView img)throws WriterException { com.google.zxing.Writer writer = new QRCodeWriter(); String finaldata = Uri.encode(data, "utf-8"); BitMatrix bm = writer.encode(finaldata, BarcodeFormat.QR_CODE,150, 150); Bitmap ImageBitmap = Bitmap.createBitmap(150, 150,Config.ARGB_8888); for (int i = 0; i < 150; i++) {//width for (int j = 0; j < 150; j++) {//height ImageBitmap.setPixel(i, j, bm.get(i, j) ? Color.BLACK: Color.WHITE); } } if (ImageBitmap

I've built an e-shopping website for a big company which has country offices. What i want to do is the following Generate barcode via PHP before sending package to country offices of company When the item will be arrived to country office, workers will login to their account, scan this barcode via barcode reader (which located on package) and website will automatically "approve" that item received. Is it possible only with web interface? I mean without any local application. How to do that? PLease explain. so here is an approach that could work for you: You need to put a record in a database

I'm seeking a library, technique or advice on how to read an EAN-13 barcode from an image (including ISBN ,and ISSN encodings). The image would come from a mobile phone or webcam, so resolution may be quite poor and not well aligned. I'm specifically interested in something that could be used from ruby on rails, but answers for other languages are welcome. Open Source solutions preferred. Leading solutions to date: ZBar (previously known as Zebra - h/t @bgbg, @Natim) - implemented in C with interfaces for Python, Perl, and C++ ZXing (h/t @codr) - implemented in Java (J2SE and Android) with