qr-code

问题 I'm trying to make a QR Code Generator for OS X but i haven't had succession in making a QRCode that can be more colourful that the black and white ones I'm using the CIQRCodeGenerator for the CIImage Filters how would i make this work I've got a sample code that I've implemented into my app :- + (NSImage *)createQRImageForString:(NSString *)string size:(CGSize)size { // Setup the QR filter with our string CIFilter *filter = [CIFilter filterWithName:@"CIQRCodeGenerator"]; [filter setDefaults]

问题 Just installed the CakePDF plugin, and using TCPDF as the engine. Now I'm trying to write bar codes and QR codes, but nothing I've tried has worked. I can get bar codes and qr codes to work if I use the TCPDF engine directly, but now that I'm trying to use the plugin, I'm not sure what to do other that just rewrite what I did with the engine directly... which makes me wonder what the point of the plugin would be then. Am I missing something obvious? Can I create bar codes and qr codes via

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . First let me provide a brief description of what I am trying to accomplish: I am trying to create a java program that can scan/read a qr code positioned in front of the computer webcam (The QR codes I would be using would all just have url information stored within them). After

问题 I have code that takes an image from the webcam, scans it for QR codes using zBar and returns the value of the code and an image with the QR code highlighted (based off http://sourceforge.net/p/qrtracker/wiki/Home/). How can I also make it tell me the size of the code (as a pixel value or % of the screen)? Additional question: is there a way to detect how skewed it is (e.g rotation in Z about the Y-axis)? 回答1: Regarding the size of Code zBar provides a method to do this in terms of pixel

问题 I'm decoding an Qr Code that i'm getting throw the Java JSANE API. when i'm writing the image i got from the JSANE API in a file before reading it with IMAGEIO.read(), the decodong process is working but when i'm using the ilage Object given from the JSANE API directly without writing it in a file before reading, i' getting the following error : Exception in thread "main" com.google.zxing.NotFoundException The method i'm using are: public String decode_QrCode(String filePath, String charset)

问题 I have this method that reads the bitmap image to decode a qr code in a certain area in the document ( looking into four corners for qr code) Because of how i have my code it is always hitting the error message which i know that it cannot find the bitmap but i want to take this error and translate in a way that executes my remaining code which is to rotate the document and look again for the qr bitmap image. Code: Bitmap[] corners = new Bitmap[] { bandImg1, bandImg2, bandImg3, bandImg4 };

问题 I have this output of a decoded QR barcode, does this code has a meaning or can I interpret these symbols to a meaningful output? Is there any algorithm to interpret the output of decoding QR? output: LWludGVydmlldy5zMy5hbWF6b25hd3MuY29tL 回答1: This string: LWludGVydmlldy5zMy5hbWF6b25hd3MuY29tL is a Base64 representation of: -interview.s3.amazonaws.com However, this is not related to QR Codes. The person who created that QR Code arbitrarily decided to encode its content as Base64. If you're

问题 I'm currently working with a lot of QR-Codes in an Android project, for which zxing is my preferred library. To actually display the generated QR-Code a Bitmap is created with the information from the encoding. QRCodeWriter writer = new QRCodeWriter(); BitMatrix matrix = writer.encode(message, BarcodeFormat.QR_CODE, px, px); Bitmap bitmap = Bitmap.createBitmap(px, px, Bitmap.Config.RGB_565); for (int x = 0; x < px; x++) { for (int y = 0; y < px; y++) { bitmap.setPixel(x, y, matrix.get(x,y) ?

问题 This is an old post. Please refer to this post for current issue 回答1: You can't dump the base64 src into the body of the email, you have to treat it like an attachment. Use a content header in place of the src. Here's a snippet of how gmail does it. Email Content Header Content-Type: image/png; name="InlineImage.png" Content-Disposition: inline; filename="InlineImage.png" Content-Transfer-Encoding: base64 Content-ID: <ii_ikqclluk0_152ed84122ba57fd> X-Attachment-Id: ii_ikqclluk0

问题 I have a code that sends an email with embeded images using aspemail. within the code i get a regular image by the <img> tag from google - so i get the qrcode in the email, if the client does not download images automaticaly, he won't see the image the embed of aspemail can't embed image/file that is not local is there a way to save locally an image from a giving url? if i get image from google: https://chart.googleapis.com/chart?chs=150x150&cht=qr&chl=http://www.sitedomain.com&choe=UTF-8 and