Does your phone have a barcode scanner?
I had a barcode scanner for a phone, but I haven't used it in about a year. For some reason, no one can find it anymore, so now, using the camera on my phone to scan the barcode is my sole barcode scanning device.
You'll need a library with the image processing to convert the picture of the barcode to a digital number. The simplest way to do that is to convert it to a black and white image. If you know your programming language, you can implement this yourself.
How can you use these things? As you may know, I write an open source software called Pulsebox (free!) that synchronizes data between mobile phones, computers, and even IoT devices (more on that later). It scans barcodes directly from my phone and uploads them to my servers for synchronization purposes.
What I found interesting was that it didn't use Google Cloud Vision, but OpenCV, which made me think if there were other interesting things to do, like creating an Android App for barcode scanning. Why use barcodes? If you want to control access, the simplest and cheapest way is using a simple barcode. You can put all your information here, such as expiration date and your user ID (like an authentication token), all on a barcode and put it anywhere, making it impossible for anyone but you to see the data.
Barcodes are great because they are small and simple. They don't have much content, so your images and the content of the barcode has to stand out.
They also look very professional. Barcodes are also easy to scan. Barcodes are also easy to process, making them extremely useful for IoT devices. The most common form is called EAN (European Article Number), which is a 13 digit code. Each digit is represented by a different color. Each of the 13 colors represents a different digit.
Another common type is UPC (Universal Product Code). This is a 12 digit code that goes from 9999999 to 88888888.
You can also see a QR code or Data Matrix in action. The format of these codes is different, and they represent images, text, and other types of data.
How to get a free barcode scanner?
Barcode scanners and coding.
What? I'm still an absolute newbie at the coding world. (I'm a software developer. I don't code in .cdf, but I will if there's no other way.)
How do I program my barcode scanner to work with the csv file? Can anyone please point me into the right direction, and where can I get a free barcode scanner? This is what I've got: There are several online sites for programming your home scanners. But the one that has helped me is Barcode Scanning Wizard.00 but you get a 60 day trial. Then if you decide not to pay for it, they don't take it back.
Thanks, Chris! So far I'm up to the last project of my "Introduction to Barcodes" course. I'll start up my own project soon to have it as a reference for the rest of the people here.
Quote. The Barcode Scanning Wizard works perfectly and I have no problems at all, so I can't really say any better than the above suggestion. I think the problem with your link, Chris, is that your link doesn't exist any more. (I have the same problem when I click the link to the page you posted.) And a lot of the "resources" listed on that page are the same ones I found before, so they've gone.
So, try again or just go to the following and they will be able to assist you: That does sound like a pain though. I got mine for free just off of eBay - just had to go through the proper channels. Just a tip though - you should be able to use the same technique and have it work on freecreditscore.com.
As an added bonus, I suggest starting to learn this as a side project to some other interest. You can then market yourself to companies as they need people with the specific skills required. The time investment for each project may be minimal at this stage, but you can develop your skills as needed. The time will come when you can charge for it and it will be well worth your while.
My scanner has been working fine with a freecreditscore.com coupon from Amazon.
Can you read a barcode without a scanner?
The basic idea behind "no scanner" tech is using machine vision.
You can probably already do this if you have a camera pointed at a barcode, like the one I took in the pictures above.
To make that work for more generic barcodes, some type of pattern recognition needs to be done. How patterns are processed for image recognition. The processing algorithms used to recognize various types of patterns in images are called feature detectors. They take an image and decompose it into smaller parts: say, two squares next to each other in an image. Those two squares will be known as key points, so if you could take the four corners of each square and describe how they correlate to each other (by, for example, rotating them clockwise or counterclockwise) then you'd have a feature detector that works on the images of those key points. And as the key points can be combined into a bigger pattern or shape, there are usually many feature detectors around that all try to detect the same pattern.
A detector can tell you that a certain shape appears in a group of images; by knowing where in the group that shape was detected and how big it was, you can then figure out a rough guess of its position and orientation. You can even create a 3D model from all the feature detectors you've trained to recognize certain shapes but that process is way too complicated for my purposes here, so we'll stick with 2D models.
If you've seen this before, maybe you recognized the QR code I used in the pictures above: it's one of the more popular ones out there, and it features two vertical black stripes with a space between them. That's known as a 1D barcode and its pattern is easily recognized with several common algorithms: You can train a different detector to look for the bars at any horizontal position in the image, or for different amounts of overlap (see above). For example, your algorithm might recognize only the bottom and side bars. Or only the top and side bars.
For a really tricky image to find this out of, you need a lot of training examples, which is why people use QR codes in large collections of documents or even printed books. You can get a few of those from me on your computer if you follow the link!