Robinson Compass Mask
In image processing, a Robinson compass mask is a type of compass mask used for edge detection. It has eight major compass orientations, each will extract the edges in respect to its direction. A combined use of compass masks of different directions could detect the edges from different angles. Technical explanation The Robinson compass mask is defined by taking a single mask and rotating it to form eight orientations: \text\begin -1 & 0 & 1 \\ -2 & 0 & 2 \\ -1 & 0 & 1 \end \text\begin 0 & 1 & 2 \\ -1 & 0 & 1 \\ -2 & -1 & 0 \end \text\begin 1 & 2 & 1 \\ 0 & 0 & 0 \\ -1 & -2 & -1 \end \text\begin 2 & 1 & 0 \\ 1 & 0 & -1 \\ 0 & -1 & -2 \end \text\begin 1 & 0 & -1 \\ 2 & 0 & -2 \\ 1 & 0 & -1 \end \text\begin 0 & -1 & -2 \\ 1 & 0 & -1 \\ 2 & 1 & 0 \end \text\begin -1 & -2 & -1 \\ 0 & 0 & 0 \\ 1 & 2 & 1 \end \text\begin -2 & -1 & 0 \\ -1 & 0 & 1 \\ 0 & 1 & 2 \end The direction axis is the line of zeros in the matrix. Robinson compass mask is similar to kirsch compass masks, but is simp ...
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Image Processing
An image or picture is a visual representation. An image can be two-dimensional, such as a drawing, painting, or photograph, or three-dimensional, such as a carving or sculpture. Images may be displayed through other media, including a projection on a surface, activation of electronic signals, or digital displays; they can also be reproduced through mechanical means, such as photography, printmaking, or photocopying. Images can also be animated through digital or physical processes. In the context of signal processing, an image is a distributed amplitude of color(s). In optics, the term ''image'' (or ''optical image'') refers specifically to the reproduction of an object formed by light waves coming from the object. A ''volatile image'' exists or is perceived only for a short period. This may be a reflection of an object by a mirror, a projection of a camera obscura, or a scene displayed on a cathode-ray tube. A ''fixed image'', also called a hard copy, is one that ...
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Compass Mask
A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with magnetic north. Other methods may be used, including gyroscopes, magnetometers, and GPS receivers. Compasses often show angles in degrees: north corresponds to 0°, and the angles increase clockwise, so east is 90°, south is 180°, and west is 270°. These numbers allow the compass to show azimuths or bearings which are commonly stated in degrees. If local variation between magnetic north and true north is known, then direction of magnetic north also gives direction of true north. Among the Four Great Inventions, the magnetic compass was first invented as a device for divination as early as the Chinese Han dynasty (since c. 206 BC),Li Shu-hua, p. 176 and later adopted for navigation by the Song dynasty Chinese during the 11th century. Kr ...
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Edge Detection
Edge or EDGE may refer to: Technology Computing * Edge computing, a network load-balancing system * Edge device, an entry point to a computer network * Adobe Edge, a graphical development application * Microsoft Edge, a web browser developed by Microsoft * Microsoft Edge Legacy, a discontinued web browser developed by Microsoft * EdgeHTML, the layout engine used in Microsoft Edge Legacy * ThinkPad Edge, a Lenovo laptop computer series marketed from 2010 * Silhouette edge, in computer graphics, a feature of a 3D body projected onto a 2D plane * Explicit data graph execution, a computer instruction set architecture Telecommunication(s) * EDGE (telecommunication), a 2G digital cellular communications technology * Edge Wireless, an American mobile phone provider * Motorola Edge series, a series of smartphones made by Motorola * Samsung Galaxy Note Edge, a phablet made by Samsung * Samsung Galaxy S7 Edge or Samsung Galaxy S6 Edge, smartphones made by Samsung * Ubuntu Edg ...
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Robison Original Image
Robison may refer to: * Robison (name), a surname; includes a list of people with the name * Robison Field, a former Major League Baseball park in St. Louis, Missouri, U.S. * Robison Glacier, Antarctica * Robison Peak, Antarctica * Robison of San Francisco, pet store and wild-animal dealers See also * Robeson (other) * Robinson (other) Robinson may refer to: People and names * Robinson (name) Fictional characters * Robinson Crusoe, the main character, and title of a novel by Daniel Defoe, published in 1719 Geography * Robinson projection, a map projection used since the 1960s ...

Robinson North Mask
Robinson may refer to: People and names * Robinson (name) Fictional characters * Robinson Crusoe, the main character, and title of a novel by Daniel Defoe, published in 1719 Geography * Robinson projection, a map projection used since the 1960s to show the entire world in two dimensions * Robinson (crater), a small lunar impact crater southwest of the large walled plain J. Herschel ;United States * Robinson, Illinois * Robinson, Iowa * Robinson, Kansas * Robinson, Kentucky * Robinson, Minnesota * Robinson, North Dakota * Robinson, Texas * Robinson Township, Allegheny County, Pennsylvania * Robinson Township, Washington County, Pennsylvania * Robinson, Indiana County, Pennsylvania ;United Kingdom * Robinson (Lake District), a 737 m hill in England's Lake District * Robinson College, Cambridge, a college in England's University of Cambridge ;France * Robinson (Paris RER), a commuter train station in Paris Ships * USS ''Robinson'', the name of more than one United States Navy ...
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