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The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...
A barcode or bar code is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths, spacings and sizes of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers, of which ...
Visitors to Derby Museum using a mobile phone to scan a QRpedia QR code. When a user scans a QRpedia QR code on their mobile device, the device decodes the QR code into a Uniform Resource Locator (URL) using the domain name "languagecode.qrwp.org" and whose path (final part) is the title of a Wikipedia article, and sends a request for the article specified in the URL to the QRpedia web server.
File usage. Global file usage. Size of this preview: 477 × 599 pixels. Other resolutions: 191 × 240 pixels | 554 × 696 pixels. Original file (554 × 696 pixels, file size: 92 KB, MIME type: image/png) This is a file from the Wikimedia Commons. Information from its is shown below. Commons is a freely licensed media file repository.
In computing, a human-readable medium or human-readable format is any encoding of data or information that can be naturally read by humans, resulting in human-readable data. It is often encoded as ASCII or Unicode text, rather than as binary data. In most contexts, the alternative to a human-readable representation is a machine-readable format ...
The QR code is detected as a 2-dimensional digital image by an image sensor and is then digitally analyzed. The processor locates the three distinctive squares at the corners of the image, and uses a smaller square near the fourth corner to normalize the image for size, orientation, and angle of viewing.
The application Barcode Scanner is an Android app, from the open-source project ZXing (short for Zebra Crossing ), that allows an Android device with imaging hardware (a built-in camera) to scan barcodes or 2D barcodes and retrieve the data encoded. [2] Information encoded often includes web addresses, geographical coordinates, and small pieces ...
A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. [1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain decoder circuitry ...
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