raster [tv]

listen to the pronunciation of raster [tv]
Türkçe - İngilizce
{i} raster
A raster, sometimes also called a "scan line," is a single row of pixel information in a digital image A "raster image" is an image made of such rows
A row of elements, such as pixels on a video monitor Multiple raster lines comprise the matrix of pixels that form a complete image Related terms: digitizer (video), grid systems
A scanning pattern of parallel lines that form the display of an image projected on a cathode-ray tube of a television set or display screen
{i} rectangular area of scan lines onto which a beam of electrons is directed to create a visual image (in television screens and computer monitors)
A raster image is a matrix of row and column data points whose values represent energy being reflected or emitted from the object being viewed These values, or pixels, can be viewed on a display monitor as a black and white or color image
The series of lines of information, such as the parallel horizontal scan lines that form a television or vide display image
Raster images are made of an array of either 2-D or 3-D information Image data is usually stored in a bitmapped form and sometimes these files are called bitmapped files Examples of raster image files are TIFF, GIF and JPEG
A pattern of scanning for input or output, which provides uniform coverage of a two-dimensional surface, such as a monitor screen, a scanner bed, or the CCD array in a digital camera
displays and databases build all geographic features from grid cells in a matrix A raster display builds an image from pixels, pels, or elements of coarse or fine resolution A raster database maintains a similar "picture" of reality in which each cell records some sort of information averaged over the cell's area The size of the cell may again be coarse or fine, ranging from centimeters to kilometers Many satellites, like Landsat and SPOT, transmit raster images of the earth's surface Reflectance at a certain wavelength is measured for each cell in an image The cells may cover areas on the earth's surface several hundreds of meters square, the area covered being a function of a particular satellite's resolution
Raster images are made up of individual dots; each of which have a defined value that precisely identifies its specific color, size and place within the image (Also known as bitmapped images )
A cellular data structure composed of rows and columns for storing images Groups of cells with the same value represent features Raster data is an abstraction of the real world where spatial data is expressed as a matrix of cells or pixels, with spatial position implicit in the ordering of the pixels With the raster data model, spatial data is not continuous but divided into discrete units This makes raster data particularly suitable for certain types of spatial operations,such as overlays or area calculations Unlike vector data, however, there are no implicit topological relationships
A pattern of horizontal lines displayed on a computer or TV monitor As the part of a monitor s screen that is actually being used to display images, it s a bit smaller than the physical dimensions of the display screen itself It varies for different resolutions Most monitors have controls that allow you to move or resize the raster
The process of rendering an image or page, pixel by pixel, in a sweeping horizontal motion, one line after another
  A predetermined pattern of scanning lines within a display space   Note: An example of a raster is the pattern followed by an electron beam scanning the screen of a television camera or receiver (188)
Data displayed as discrete picture elements (pixels)
A line of pixels
The process of rendering an image or a page using the technology that helped create the television It involves rendering the particular image or page, pixel by pixel, in a sweeping vertical or horizontal motion, like a rake drawing lines in the dirt
A set of cells selected from the structure by a set of rules, for visualization For example, the row and column raster select, starting from the cursor, a single rank in one dimension an all ranks in another dimensions that intersect that rank The raster for the vanishing view selects all cells within a given radius of the cursor
Also referred to as bitmap images, these are images that are represented by a sequence of pixels (picture elements) or points, which when taken together, describe the display of an image on an output device There are many different raster image formats in use, among them GIF, JPEG, PCX, and TIFF
raster [tv]