PDF417 | PDF417 barcode reader | Barcode Processing library
kandi X-RAY | PDF417 Summary
kandi X-RAY | PDF417 Summary
Port of ZXing "Zebra Crossing" actionscript library to JavaScript.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Decode bitmap data .
- Returns a list of all the decoded hints for the display .
PDF417 Key Features
PDF417 Examples and Code Snippets
Community Discussions
Trending Discussions on PDF417
QUESTION
In my barcode contains a Norwegian character (Ålesund). But while scanning it on the Zebra device I am not getting the letter (Å) instead I am getting something like this (�lesund).
The configuration that I am following the app is,
...ANSWER
Answered 2022-Feb-03 at 13:19You can set the below reader param. That will solve your issue.
QUESTION
So I realize there are several questions about this but I feel like I've reviewed them all and still haven't figured out what I did wrong or different. I call this class from a function that I know happens after viewDidLoad. What I am trying to do is be able to take a video stream from a given AVCaptureDevice or camera id and pass this into a WebView as a series of evaluateJavascript calls, I may need to optimize this later but I'm having trouble just getting captureOutput to be called. Certainly, I don't need a preview to be able to capture the output do it? I've confirmed the permissions are correct and the code reaches the point where the sample buffer delegate is being set on the capture session. Any ideas?
...ANSWER
Answered 2021-Nov-04 at 14:46Update: There is actually nothing wrong with the code here. The issue I was having was that the instance of the class that is described above was being garbage collected.
QUESTION
I want to print the data from the scanner to firebase realtime database using Flutter. I am scanning a barcode pdf417 and I am printing it in a listview and now I want to store that data to firebase realtime database using a button.
I am using the Flutter library https://pub.dev/packages/barcode_scanner as a reference.
May I please have assistance with this, I will post my code below. Thank you for your assistance in advance.
...ANSWER
Answered 2021-Sep-09 at 10:26Confirm that your databaseRef has .child('xxx')
QUESTION
I'm trying to encode a PDF417 and whenever I set the PDF417_COMPACTION
to Compaction.TEXT
I get this crash:
ANSWER
Answered 2021-Sep-09 at 11:44What is your img_width, img_height? This is my solution, you need to use realWidth = bitMatrix.getWidth()....:
QUESTION
I'm trying to build a realtime barcode reader using pyzbar. I have only EAN-13 barcodes and some of them are read properly but some are recognized as PDF417 and I get this message: WARNING: .\zbar\decoder\pdf417.c:89: : Assertion "g[0] >= 0 && g[1] >= 0 && g[2] >= 0" failed How to increase efficiency? Maybe there is another python library which I can use?
This is my code:
...ANSWER
Answered 2021-May-07 at 13:57If you only have EAN-13, you could specify that so pyzbar would only check for EAN-13. You can specify the desired codes in a list to the parameter symbols
when calling decode(...)
.
QUESTION
I have the following example of PDF417 barcode:
which can be decoded with online tool like zxing
as the following result: 5wwwwwxwww0app5p3pewi0edpeapifxe0ixiwwdfxxi0xf5e�¼ô���������¬‚C`Ìe%�æ‹�ÀsõbÿG)=‡x‚�qÀ1ß–[FzùŽûVû�É�üæ±RNI�Y[.H»Eàó¼åñüì²�tØ¿ªWp…Ã�{�Õ*
as 5wwwwwxwww0app5p3pewi0edpeapifxe0ixiwwdfxxi0xf5e~|~~~~~~~~~~d~C`~e%~~~~;To~B~{~dj9v~~Z[Xm~~"HP3~~LH~~~O~"S~~,~~~~~~~k1~~~u~Iw}SQ~fqX4~mbc_
(I don't know which encoding is used to encode this)
The first part of the encoded key that contains barcode is always known and it is 5wwwwwxwww0app5p3pewi0edpeapifxe0ixiwwdfxxi0xf5e
The second part of it can be decoded from the base64string and it always contains 88 bytes. In my case it is:
Frz0DAAAAAAAAAAArIJDYMxlJQDmiwHAc/Vi/0cpPYd4ghlxwDHflltGevmO+1b7GckT/OZ/sVJOSRpZWy5Iu0Xg87zl8fzssg502L+qV3CFwxZ/ewjVKg==
I'm using Swift on iOS device to generate this PDF417 barcode by decoding the provided base64 string like this:
...ANSWER
Answered 2021-Mar-07 at 10:01CIPDF417BarcodeGenerator
has a few more input parameters besides inputMessage
that can have an influence on how the generated barcode looks - see the documentation. Visual inspection/comparison of two codes only makes sense when you know that all these parameters, most importantly inputCorrectionLevel
were equal for both generators.
So, instead of a visual comparison, simply try decoding the barcodes using one of the many scanner apps out there, and compare the decoded bytes.
For your second example, try this:
QUESTION
This is the barcode scanning tutorial I used in my program, so that you have a lot more context when you read my code: Link
Here is what my program does so far: Essentially, when I scan an item's barcode with my phone, the UIAlert pops up with the barcode ID displayed and a button prompting the user to open the "Results" page. This is all fine and good, but how do I pass that same scanned barcode ID into a label on the Result's page? I have been stuck on this for 2 days now, even though it seems like such an easy task.
Any help is much appreciated <3
Here is my relevant code:
ProductCatalog.plist -> Link to Image
Scanner_ViewController.swift (first View Controller) ->
...ANSWER
Answered 2020-Sep-22 at 04:37Do you have a variable to hold the scanned ID in your view controllers? If not, you can add var itemID: String?
to both Scanner_ViewController
and Analysis_ViewController
.
Then in your func where you get the scanned code, you can set it to the variable.
QUESTION
I am working on a rails application that needs to send an piece of HL7 data encoded as PDF417 as JSON over API. The receiver of the barcode encoding will then insert the data into a word document with a PDF417 IDAutomation barcode font.
The problem I am running into is providing an encoding that the font likes.
I've used several encoders, Barby, https://github.com/asee/pdf417, https://github.com/asee/pdf417, which produce arrays of integers(codewords) via text compaction, binary compaction, etc, but all of these are different than what the IDAutomation font expects. Using their encoders it creates a list of 11 rows of numbers 324 chars each.
I seem to be missing a key piece of information here, but having trouble finding the explanation. I found a clue regarding getting the right error correction, row count, and column count values, but it still seems to be a big disconnect between what ID Automation font wants, and these ruby barcode encoders produce. (An array of binary, or an array of codewords)
For example with Barby: Binary:
...ANSWER
Answered 2020-Feb-01 at 15:02The ID Automation font is only going to "like" it's own proprietary encoding scheme, which appears to be using something similar to octal instead of the Barby binary or "tc" decimal. The three schemes all create different PDF417 barcodes with different number of rows and columns.
What you are running into is the stage gap between digitization and rendering. The digitization stage is responsible for turning data into the dots and spaces required for the specific symbology used (Code 128, PDF417, etc). The rendering stage is used to take the ones and zeros and turn those into ink or light up pixels.
You can't mix the two stages because the first stage creates the encoding in the format that the second stage needs.
I tried to convert the ID Automation encoding to binary from what I assumed was octal. It did not scan. The Barby binary encoding scanned like a champ.
QUESTION
What's wrong with this code? I am running the following code in MainActivity
but I get only an empty app:
ANSWER
Answered 2020-Jan-17 at 20:41You should follow Android's documentation for checking and requesting permissions. https://developer.android.com/training/permissions/requesting
I have modified your code and this should be a working sample.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install PDF417
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page