barcode-scanner

问题 I Have tried various QR code libraries and webcam capturing techniques. Capturing photos within a specific time interval and then sending it to the QR code library seemed as a good idea but the success ratio for detecting the QR code is extremely low. Could anyone recommend a better approach for detecting the QR code through webcam? Thanks a lot :) Code: void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs) { Bitmap video = (Bitmap)eventArgs.Frame.Clone(); pictureBox1.Image =

问题 I Have tried various QR code libraries and webcam capturing techniques. Capturing photos within a specific time interval and then sending it to the QR code library seemed as a good idea but the success ratio for detecting the QR code is extremely low. Could anyone recommend a better approach for detecting the QR code through webcam? Thanks a lot :) Code: void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs) { Bitmap video = (Bitmap)eventArgs.Frame.Clone(); pictureBox1.Image =

问题 I want to integrate bar-code scannerin my Android application. I attempted to add the zxing library, but all my app does is show the camera view without scanning. http://code.google.com/p/zxing/ Is there a simple way to integrate barcode scanning functionality? 回答1: This is waaaay too open-ended of a question. Long and short of it is that the Android app parts of ZXing are a bit monolithic and can be hard to copy into your existing app unless you're very familiar with it -- I'd actually

问题 This is my first post on this website, can't seem to solve the problem. How do I emulate key function Ctrl + B to a barcode so i can scan the barcode with a scanner without pressing Ctrl + B . I've tried reading the ASCII Control Codes ASCII control codes Please help me. 回答1: As one of your tags demonstrates, you are already aware of the code 128 symbology. You will want to use the code128A start code (103) and the same character as a lower case 'b' in code128B (66). Finally, after adding

问题 Is there any way to scan multiple bar-codes from a single image at a time using PHP or JavaScript. I have googled, but can scan only single barcode from an image. I have tried this code : https://gist.github.com/tobytailor/421369 回答1: If you can't find any good PHP or JavaScript Barcode SDKs, you can try some C/C++ SDKs. I just show you an example about how to wrap C/C++ methods in JavaScript and PHP. Here is an image with multiple Barcodes. You can use Dynamsoft Barcode SDK to decode the

问题 Currently I'm programming a label-writer (Brother QL-570, if it matters, in Java) to print barcodes with different ID's. The length of the barcode data can vary from ~17 characters to ~3. However, given that I've understood the barcode-concept correctly, the more data - the wider will the barcode become. I'd prefer if all barcodes had the same, contstant size: no matter data-length. (It won't look good if the barcode doesn't fill up the label, nor will it (work) if it's too large) How can one

问题 I have an app that needs to scan a barcode to get a code before it can continue. I use this code to start the scanning activity: finish = (Button) findViewById(R.id.finishButton); finish.setOnClickListener(new OnClickListener() { public void onClick(View viewParam) { /*Prompt the user to scan the barcode */ new AlertDialog.Builder(Visit.this) .setMessage("Please Scan the clients barcode to complete the visit") .setPositiveButton("Scan Barcode", new DialogInterface.OnClickListener() {

问题 I have a following code which I use to catch input from bar code scanner. The problem is in that I want to save whole scanned code in database, but every character of code prints on new line: #!/usr/bin/env python from evdev import InputDevice, ecodes, list_devices from select import select keys = "X^1234567890XXXXqwertzuiopXXXXasdfghjklXXXXXyxcvbnmXXXXXXXXXXXXXXXXXXXXXXX" dev = InputDevice("/dev/input/event10") barcode = "" while True: r,w,x = select([dev], [], []) for event in dev.read():

问题 I am creating an Apache Cordova app. I have added InAppBrowser plugin and barcode scanner plugin that is invoked from the page opened inside InAppBrowser through cross browser communication. It is running perfectly fine in Android. But when ran in iOS, the InAppBrowser acts like a modal pop-up and doesn't let barcode scanner appear until the InAppBrowser is closed/dismissed. I have confirmed that barcode scanner is working even when in background but it just won't appear because the

问题 Not exactly a programming question, but close. I'll try my luck anyway. The keyboard wedge barcode scanner inserts the translation device between the reader and the keyboard. Data sent through a wedge appears as if it was typed into the computer, while the keyboard itself remains fully functional . Because a computer using a keyboard wedge can't tell the difference between data that is entered by a scanning device, or data that is entered by keyboard typing, a wedge can be used to easily add