DeactivatingBarcode ScannerItselfHardware faultsIn addition to the unrecognized bar code, the following situations may also cause the bar code scanner to be unable to recognize the bar code. ( 1 ) The recognized barcode is not opened.For some special bar codes, the factory settings of the barcode scanner are di
. zxing. decoding, Com. mining. app. zxing. view these three packages are copied to your project, and then the corresponding resources are introduced. I also directly referenced them from my project, and the package name has not been changed, of course, you also need to reference zxing. jar
Com. example. the qr_codescan package contains a mipcaactivitycapture which directly introduces the code of my previous project. This activity mainly processes the scanning interface class, for example, t
the camera resolution is fixed, so there is a need to make some adjustments to calculate the correct scaling ratio.4. Set the scan box to squarepublicsynchronizedrectgetframingrect () { if (framingrect==null) { if (camera==null) { returnnull; } pointscreenresolution=configmanager.getscreenresolution (); if (screenresolution==null) {// calledearly,beforeinitevenfinished returnnull;} intwidth= Finddesireddimensioninrange (screenresolution.x,min_frame_width, max_frame_width); // Set the scan box
/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA =/dissolve/70/gravity/Center "style =" border: none; "alt =" Center "/>
Ii. QR code
QR code is becoming more and more popular. You can scan the QR code scanner on your mobile phone or other mobile terminals to obtain relevant information. You can find many
I. OverviewZxing can be recommended for third-party libraries such as barcode4j or zxing.BARCODE4J Profile Link: http://barcode4j.sourceforge.net/Zxing Profile Link: https://github.com/zxing/zxingSecond, barcode4jKey code:New Datamatrixbean (); Final int dpi = += "Image/png"newnewfalse, 0The supported barcode formats are:
Interleaved 2 of 5
ITF-14
Code 39
Code 128
EAN-128, gs1-128 (based on Code 128)
Codabar
Upc-a and
Module : BarcodeBarcode Module Management Barcode scanning, provide common barcode (two-dimensional code and one-dimensional code) scanning recognition function, can call the device's camera to the barcode image scanning for data input. Barcode Code Management Objects can be obtained through Plus.barcode.Use the scene
QR code-quick matrix two-dimensional Barcode
The QR code is a matrix QR code symbol developed by the Japanese company Denso in September 1994, in addition to the large information capacity and high reliability of one-dimensional and other two-dimensional codes, QR codes can
Bcodebitmap = encoder. Encode (Qrdata. ToString ());
Bcodebitmap.save (@ "E:\HelloWorld.png", imageformat.png);
Bcodebitmap.dispose ();
}
3): Through Spire.barcode (Spire.BarCode.dll) to achieve
1.1): First download the corresponding Third-party components through the VS2015 NuGet, as shown in the following figure:
1.2): The concrete generation of two-dimensional code method is as follows
private void Generateqrbyspire ()
{
barcodesettings bs = new barcodesettings ()
{
Data = '
Standard for barcodes :Barcodes are standard with ENA barcodes, UPC barcodes, 25-bar codes, cross 25-bar codes, Codabar barcodes, Sanjiu barcodes, and 128 bar codes, and the most commonly used products are EAN barcodes. EAN Barcode, also known as the general merchandise barcode, is developed by the International Code of Goods Association, which is common around the world and is currently the most widely use
?? Need to implement Python to read the QR code, barcode information in the picture. The previous period of time research using Zbarlight module, a lot of effort to install debugging, but found some pictures are not read correctly, and if the image of the two-dimensional code tilt, can not read, can not meet the requirements. Yesterday, trying to try zxing, download zxing module after installation, but has
This article describes the 1d/2d codecs that you can use in C #. The application of bar code is already very common, almost all the goods in the supermarket are printed with barcodes, QR Code also began to apply to many occasions, such as fire tickets have two-dimensional code recognition, NetEase's home page has two-dimensional code icons, users just need to scan with a mobile phone can see the mobile version of NetEase's URL, avoid the trouble of in
Transferred from: http://www.cnblogs.com/tuyile006/archive/2013/01/16/2863367.htmlThis article describes the 1d/2d codecs that you can use in C #. The application of bar code is already very common, almost all the goods in the supermarket are printed with barcodes, QR Code also began to apply to many occasions, such as fire tickets have two-dimensional code recognition, NetEase's home page has two-dimensional code icons, users just need to scan with a
First, preface:iOS7.0 can then use the system native API to generate a QR code, iOS8.0 can be generated after the barcode, the system default generated color is black. Here, the following methods can be used to generate a specified size, specify the color of the QR code and bar code, you can also add background color, shadow effect, the following is the specific
(1) Download the QR Code library source codeLink: http://pan.baidu.com/s/1pKQyw2n Password: R5BVWhen the download is complete, open the folder where you can see the libzxing, and add it to Android Studio, with the following: File------New-----"Import moudle(2) button click event for scannerBackground code:Public void Scanner (view view) {Startactivityforresult (New Intent (Scanactivity.this,Captureactivity.
I have done some work on the identification and generation of QR codes. Summary.
Obviously, we will not spend a lot of effort to write this recognition process on our own. This may involve manual identification, so to be lazy, I thought of finding such an open-source tool on the Internet.
Go to their official website and draw the following conclusions:
Zbar can scan the QR code and
QR Code barcode scanning using IOS7 native API prior to IOS7, developers typically use third-party libraries for code-scanning programming. commonly used is the ZBarsdk,ios7 after , the system's Avmetadataobject class, we provide an interface for parsing two-dimensional code. Tested, the use of native API scanning and processing is very efficient, far higher than the third-party library. I. Examples of
Python zxing library parsing (barcode QR code identification), pythonzxingVarious code scanning software
I recently want to build a QR code recognition project. I found that there are many open-source and non-open-source software for QR code recognition.
Http://www.oschina.net/project/tag/238/Zbar
First, I tried Zbar.
When using aspose. barcode, you can use a non-English character set to generate a two-dimensional code, for example, 文,,, and so on. The maximum number of characters is 1000. The following is an example of generating a QR code using Turkish text and Chinese text:
Create a PDF417 QR code with Turkish characters
C #
// Generate the
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