qr-code

I need to store the qrcode (generated using phpqrcode) into a db instead of placing them in a filepath. The examples given in the sourceforge project ( http://phpqrcode.sourceforge.net/examples/ ) speaks only about storing them in a physical file path. I dont want to store them in a file path. Please advice. QRcode::png($codecontent, $filepath); Based on the discussion in comments with the OP, and the question as precised - how to generate the QR code as ASCII - this topic is covered in the examples for phpqrcode: http://phpqrcode.sourceforge.net/examples/index.php?example=702 $codeContents =

I want to show a line moving through the screen while the camera is open in my android application. Similar to the line which is moving in a bar code scanner application. Like the white line which is shown in the image. The line can move from top to bottom and bottom to top continuously. For this, you're gonna want to create your custom view and override the onDraw method as follow : public class MyScanningView extends View { private Paint paint = new Paint(); private int mPosY = 0; private boolean runAnimation = true; private boolean showLine = true; private Handler handler; private Runnable

Simple as that. I'm making an app where the user has to scan a QR code (which basically is a base64 encoded string), is there any way to verify that the string is encoded in base64 before decode and follow the flow of the application? My code would be responsible for that is: func captureOutput(captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [AnyObject]!, fromConnection connection: AVCaptureConnection!) { if metadataObjects == nil || metadataObjects.count == 0 { qrCodeFrameView?.frame = CGRectZero return } let metadataObj = metadataObjects[0] as

I have a problem to retrieve and display all the information about the QR Code in Swift 4. I used a QR Code generator with text extension in which I added {"number":"+33688888888","amount":"50"} in my function to call and display information func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) { if metadataObjects != nil && metadataObjects.count != 0 { let metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject if metadataObj.type == AVMetadataObject.ObjectType.qr { let info =

This question is an exact duplicate of: QR Codes Recognition Algorithm [closed] How can I recognize QR codes in an image and draw a square when a QR code is detected? I have been working with OpenCV and Visual Studio 2010 detecting squares in general and I would want to know if there is something similar (for example,an algorithm) to that to detect QR codes. Thanks in advance. Actually there is an algorithm to detect QR Codes that is described in ISO/IEC18004. You have to look for a specific pattern 1:1:3:1:1 (1 dark module: 1 light module: 3 dark: 1 light : 1 dark). Then you have 1 finder

I have 25 tiles, each 94x94px, of previously splitted QR code (470x470px). I need to recover QR code by combining all possible tiles into one image. 3 tiles suppose to be "anchors" or big squares located at NW, NE and SW corners. Therefore we have remaining 22 tiles with unknown position. How to generate all possible combinations using ImageMagick? UPDATE: My first approach is to generate text file (which later will be fed to ImageMagick as input) with all combinations, taking into account static squares (NW, NE and SW corners). I struggle to understand how to interact with IM command line

Actually I don't understand how to implement the rectangle on the camera preview. Everything working well, but I don't know the way to put the rectangle border like this link . Please anyone help me. Thanks. I suggest you implement your camera preview in a custom SurfaceView and then in your XML you can simply overlay the rectangle, like the accepted answer here: Android: Overlay on Android Camera Preview So add a Java file to your project: public class CapturePreview extends SurfaceView implements SurfaceHolder.Callback{ public static Bitmap mBitmap; SurfaceHolder holder; static Camera

I am using the google open source java zxing creator: http://code.google.com/p/zxing/ to create QR codes. I have everything in place and working (I'm loading the java files using coldfusion and writing the image to the browser.) What I want now is to change the black QR colour to something else. Is there an easy way of doing this? Would I need to edit a decompiled version of the encoder java file? Or is there a way I could add a color argument to the encoding routine? Thanks Shaun In MatrixToImageWriter.java (which I assume you are using), under javase/ change the constant BLACK . It is an int