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The complexity of the pre-processing needed before differencing varies with the type of image, but is essential to ensure good subtraction of static features. This is commonly used in fields such as time-domain astronomy (known primarily as difference imaging) to find objects that fluctuate in
MacDraw, introduced in 1984 with the Macintosh line of computers, was an early example of this class; recent examples are the commercial products Adobe Illustrator and CorelDRAW, and the free editors such as xfig or Inkscape. There are also many 2D graphics editors specialized for certain types of drawings such as electrical, electronic and ...
Subtraction is an operation that represents removal of objects from a collection. [1] For example, in the adjacent picture, there are 5 − 2 peaches—meaning 5 peaches with 2 taken away, resulting in a total of 3 peaches.
Illustrator CS (also called version 11), released by Adobe for Mac and Windows in October 2003, was the first version to include 3-dimensional capabilities allowing users to extrude or revolve shapes to create simple 3D objects. Illustrator CS2 (version 12), released by Adobe in April 2005, was available for both the Mac OS X and Microsoft ...
Fear about the end of competition between these two leading applications was reported in the media and expressed by customers (Illustrator versus FreeHand and Adobe Photoshop versus Aldus PhotoStyler.) [10] [11] Because of this overlapping of the market, Altsys stepped in by suing Aldus, saying that the merger deal was "a prima facie violation ...
Some formats have additional support through Inkscape extensions, including PDF, EPS, Adobe Illustrator, Dia, Xfig, CGM, sK1 and Sketch. The predecessor of Inkscape was Sodipodi. Ipe lets users draw geometric objects such as polylines, arcs and spline curves and text. Ipe supports use of layers and multiple pages.
A free software Asteroids-like video game played on a vector monitor. Vector-based devices, such as the vector CRT and the pen plotter, directly control a drawing mechanism to produce geometric shapes. Since vector display devices can define a line by dealing with just two points (that is, the coordinates of each end of the line), the device ...
a magic wand tool that selects objects or regions in the image defined by proximity of color or luminance, vector-based pen tools, as well as more advanced facilities such as edge detection, masking, alpha compositing, and color and channel-based extraction.