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Questions tagged [scanning]

The act of reading an image, a text or an object using a camera or some other optical input device. This tag should not be used for network, text or file scans.

The act of reading an image, a text or an object using a camera or some other optical input device to a digital file. This tag should cover all that has to do with physical scanners like bed scanners and hand scanners, and software scanning using cameras. It also covers QR codes and barcodes.

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.NET Scanning API

Is there any free or commercial component written in .NET (no COM interop) that will work with most twain scanners?
Erick Sgarbi
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Barcode Scanner implementation on Java

Good sirs, I have a question. The school Java project I am currently working on requires me to have a USB Barcode Scanner as an external input to be connected to my laptop. I haven't actually bought the USB Scanner since it's quite expensive for a…
user976123
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How to scan for available bluetooth devices in range in android?

I need to get a list of available bluetooth devices in the area using google android 2.1. Thing is, i don't just need a list of those devices, i need some unique id for each device found and i need an indicator, how "good" the signal is received…
xenonite
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PDF and text layer

According to this site http://www.searchable-pdf.com/content.php?lang=en&c=61, a PDF can be searchable when a text layer is added. I was looking for the technical specification of a PDF. I think text can be stored in 2 ways into a PDF: a) as a text…
Jochen Hebbrecht
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Suggest an OCR Library for iOS

I want to make an offline iPhone application that can grab text from a picture. Can anyone suggest the best library which I can use. I heard ZBAR and ZXING can be used only for barcode reading. Is there any other OCR Libraries for iOS to read text…
Vaisakh
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Android : Capture a document & Scan it using camera

I would like to develope an application in android. The requirement is to scan a document using the camera and to convert the scanned data to a pdf file, so that it could be used as an attachment in mail. Please provide me some sample code... Thank…
Kannan Suresh
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Open Source Iris Scanning Library in Java

I am looking for suggestions about open source Iris Scanning libraries in Java. Has anyone used before which can built an unique profile for each scan & be able to authenticate too. Thank you.
Dilipkumar J
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Python - how to make BMP into JPEG or PDF? so that the file size is not 50MB but less?

I have a scanner when i scan the page it makes a BMP file but the size per page is 50MB. How do i tell Python, make it JPEG and small size. rv = ss.XferImageNatively() if rv: (handle, count) = rv twain.DIBToBMFile(handle,'imageName.bmp') how do you…
user285594
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How to scan in PHP

I want to scan from my PHP script. I'm using Ubuntu 14.04 LTS, a Brother MFC-7840W scanner (located at work), and a Brother MFC-9840CDW (located at home). I can scan from the terminal and PHP when either scanner is connected to the computer as a…
Arya
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C++ Getting RGB from hBitmap

Working with bitmaps is very new to me so I've been really struggling with the online tutorials and strategies that I've read through. Basically my goal is to scan the screen for a particular RGB value. I believe the steps to do this is to capture…
Mike
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How do I use the scanCrop property of a ZBar reader?

I am using the ZBar SDK for iPhone in order to scan a barcode. I want the reader to scan only a specific rectangle instead of the whole view, for doing that it is needed to set the scanCrop property of the reader to the desired rectangle. I'm having…
Sagiftw
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How to stop continuous scanning by zxing-android-embedded in Android

I am using Zxing-android-embedded(https://github.com/journeyapps/zxing-android-embedded) to scan QR codes. I have imported the library from github . When the app starts , the camera is scanning the code repeatedly as long as the camera is placed on…
ThunderDragon
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How to Scan and Extract data from IDs and Passports

I want scan and extract data from IDs and Passports, Which free plugins I use? Or how do I do it, To read the data and add this data to form.
Gurbela
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Canon TWAIN scanner stuck on 'Warming up' for minutes

I'm trying to interface with a TWAIN-compliant multifunction printer and scanner, a Canon Pixma MG5750, from C# using the NTwain library. I'm writing a program to scan an image into an Image object. The scanner has to warm up before scanning the…
Aaron Christiansen
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3D scanning possible with OpenCV?

this is a general question where I'm just looking for a starting point, not for a complete solution. I plan to do some 3D-scanning, means checking a surface and generationg a 3D model out of it. AFAIK there are two methods for it: one with a laser…
Elmi
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