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Whereas a barcode is a machine-readable optical image that contains information specific to the labelled item, the QR code contains the data for a locator, an identifier, and for web-tracking. To efficiently store data, QR codes use four standardized modes of encoding: (i) numeric, (ii) alphanumeric, (iii) byte or binary, and (iv) kanji. [4] Compared to standard UPC barcodes, the QR labelling ...
Vector graphics are a form of computer graphics in which visual images are created directly from geometric shapes defined on a Cartesian plane, such as points, lines, curves and polygons. The associated mechanisms may include vector display and printing hardware, vector data models and file formats, as well as the software based on these data ...
The continuous signal S ( t) is represented with a green colored line while the discrete samples are indicated by the blue vertical lines. In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal. A common example is the conversion of a sound wave to a sequence of "samples".
Transmission electron microscopy ( TEM) is a microscopy technique in which a beam of electrons is transmitted through a specimen to form an image. The specimen is most often an ultrathin section less than 100 nm thick or a suspension on a grid. An image is formed from the interaction of the electrons with the sample as the beam is transmitted through the specimen. The image is then magnified ...
The Windows API, informally WinAPI, is the foundational application programming interface (API) that allows a computer program to access the features of the Microsoft Windows operating system in which the program is running. Each major version of the Windows API has another name that identifies a compatibility aspect of that version.
Random sample consensus ( RANSAC) is an iterative method to estimate parameters of a mathematical model from a set of observed data that contains outliers, when outliers are to be accorded no influence on the values of the estimates.
Sociological Images is a blog that offers image-based sociological commentary and is one of the most widely read social science blogs. [1] Updated daily, it covers a wide range of social phenomena. The aim of the blog is to encourage readers to develop a "sociological imagination" and to learn to see how social institutions, interactions, and ideas affect the individual.
A visual metaphor is a metaphor the medium of which is visual. Like in any other metaphor, one part of it, usually named "source", applies to another part, usually named "target", and reconstructs it. The point is that the metaphorical application or reconstruction in visual metaphor is made by means of visual tools, forms and compositions.