Download Images Of Computer Mouse

Does a computer mouse temporarily store or send to a computer the images it takes when tracking its movements? Or does it just send updated coordinates to the computer and the images are temporary and overwritten with each movement?

Mouse send to computer number of "ticks" for X and Y coordinates (related to mouse) for particular time. No picture or anything from your fantasies is involved.And mouse work by getting impulses from sensor which "see" the change of contrast of the surface below.

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I wish to detect and track the mouse cursor in a screen recording video. My goal is to track the mouse cursor in the video and know about the events like closing of a window, exiting an application etc.

You could probably detect the pointer using a HAAR Classifier: It is a machine learning based approach where a cascade function is trained from a lot of positive and negative images. It is then used to detect objects in other images. OpenCV already has trained HAAR Classifiers built in for faces, eyes etc. but it should be possible to train your own for the cursor.

A computer mouse (plural mice, also mouses)[nb 1] is a hand-held pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of the pointer (called a cursor) on a display, which allows a smooth control of the graphical user interface of a computer.

The first public demonstration of a mouse controlling a computer system was done by Doug Engelbart in 1968 as part of the Mother of All Demos.[1] Mice originally used two separate wheels to directly track movement across a surface: one in the x-dimension and one in the Y. Later, the standard design shifted to use a ball rolling on a surface to detect motion, in turn connected to internal rollers. Most modern mice use optical movement detection with no moving parts. Though originally all mice were connected to a computer by a cable, many modern mice are cordless, relying on short-range radio communication with the connected system.

In addition to moving a cursor, computer mice have one or more buttons to allow operations such as the selection of a menu item on a display. Mice often also feature other elements, such as touch surfaces and scroll wheels, which enable additional control and dimensional input.

The earliest known written use of the term mouse or mice in reference to a computer pointing device is in Bill English's July 1965 publication, "Computer-Aided Display Control".[2] This likely originated from its resemblance to the shape and size of a mouse, with the cord resembling its tail.[3][4] The popularity of wireless mice without cords makes the resemblance less obvious.

The plural for the small rodent is always "mice" in modern usage. The plural for a computer mouse is either "mice" or "mouses" according to most dictionaries, with "mice" being more common.[7] The first recorded plural usage is "mice"; the online Oxford Dictionaries cites a 1984 use, and earlier uses include J. C. R. Licklider's "The Computer as a Communication Device" of 1968.[8]

The trackball, a related pointing device, was invented in 1946 by Ralph Benjamin as part of a post-World War II-era fire-control radar plotting system called the Comprehensive Display System (CDS). Benjamin was then working for the British Royal Navy Scientific Service. Benjamin's project used analog computers to calculate the future position of target aircraft based on several initial input points provided by a user with a joystick. Benjamin felt that a more elegant input device was needed and invented what they called a "roller ball" for this purpose.[9][10]

DATAR was similar in concept to Benjamin's display. The trackball used four disks to pick up motion, two each for the X and Y directions. Several rollers provided mechanical support. When the ball was rolled, the pickup discs spun and contacts on their outer rim made periodic contact with wires, producing pulses of output with each movement of the ball. By counting the pulses, the physical movement of the ball could be determined. A digital computer calculated the tracks and sent the resulting data to other ships in a task force using pulse-code modulation radio signals. This trackball used a standard Canadian five-pin bowling ball. It was not patented, since it was a secret military project.[12][13]

Douglas Engelbart of the Stanford Research Institute (now SRI International) has been credited in published books by Thierry Bardini,[15] Paul Ceruzzi,[16] Howard Rheingold,[17] and several others[18][19][20] as the inventor of the computer mouse. Engelbart was also recognized as such in various obituary titles after his death in July 2013.[21][22][23][24]

By 1963, Engelbart had already established a research lab at SRI, the Augmentation Research Center (ARC), to pursue his objective of developing both hardware and software computer technology to "augment" human intelligence. That November, while attending a conference on computer graphics in Reno, Nevada, Engelbart began to ponder how to adapt the underlying principles of the planimeter to inputting X- and Y-coordinate data.[15] On 14 November 1963, he first recorded his thoughts in his personal notebook about something he initially called a "bug", which is a "3-point" form could have a "drop point and 2 orthogonal wheels".[5][15] He wrote that the "bug" would be "easier" and "more natural" to use, and unlike a stylus, it would stay still when let go, which meant it would be "much better for coordination with the keyboard".[15]

In 1964, Bill English joined ARC, where he helped Engelbart build the first mouse prototype.[4][25] They christened the device the mouse as early models had a cord attached to the rear part of the device which looked like a tail, and in turn, resembled the common mouse.[26] According to Roger Bates, a hardware designer in English, another reason for choosing this name was because the cursor on the screen was also referred to as "CAT" at this time.[5][6]

As noted above, this "mouse" was first mentioned in print in a July 1965 report, on which English was the lead author.[3][4][2] On 9 December 1968, Engelbart publicly demonstrated the mouse at what would come to be known as The Mother of All Demos. Engelbart never received any royalties for it, as his employer SRI held the patent, which expired before the mouse became widely used in personal computers.[27] In any event, the invention of the mouse was just a small part of Engelbart's much larger project of augmenting human intellect.[28][29]

On 2 October 1968, three years after Engelbart's prototype but more than two months before his public demo, a mouse device named Rollkugelsteuerung (German for "Trackball control") was shown in a sales brochure by the German company AEG-Telefunken as an optional input device for the SIG 100 vector graphics terminal, part of the system around their process computer TR 86 and the TR 440 [de] main frame.[32][33][34][35] Based on an even earlier trackball device, the mouse device had been developed by the company in 1966 in what had been a parallel and independent discovery.[35][36] As the name suggests and unlike Engelbart's mouse, the Telefunken model already had a ball (diameter 40 mm, weight 40 g[37]) and two mechanical 4-bit[37][38] rotational position transducers[37][39][38] with Gray code-like[37][38][nb 2] states, allowing easy movement in any direction.[40] The bits remained stable for at least two successive states to relax debouncing requirements.[37][38] This arrangement was chosen so that the data could also be transmitted to the TR 86 front-end process computer and over longer distance telex lines with c. 50 baud.[39] Weighing 465 grams (16.4 oz), the device with a total height of about 7 cm (2.8 in) came in a c. 12 cm (4.7 in) diameter hemispherical injection-molded thermoplastic casing featuring one central push button.[37]

As noted above, the device was based on an earlier trackball-like device (also named Rollkugel) that was embedded into radar flight control desks.[36] This trackball had been originally developed by a team led by Rainer Mallebrein [de] at Telefunken Konstanz for the German Bundesanstalt fr Flugsicherung [de] (Federal Air Traffic Control). It was part of the corresponding workstation system SAP 300 and the terminal SIG 3001, which had been designed and developed since 1963.[39] Development for the TR 440 main frame began in 1965.[41][39] This led to the development of the TR 86 process computer system with its SIG 100-86[35][33] terminal. Inspired by a discussion with a university customer, Mallebrein came up with the idea of "reversing" the existing Rollkugel trackball into a moveable mouse-like device in 1966,[39] so that customers did not have to be bothered with mounting holes for the earlier trackball device. The device was finished in early 1968,[39] and together with light pens and trackballs, it was commercially offered as an optional input device for their system starting later that year.[32][33][34][42] Not all customers opted to buy the device, which added costs of DM 1,500 per piece to the already up to 20-million DM deal for the main frame, of which only a total of 46 systems were sold or leased.[35][43] They were installed at more than 20 German universities including RWTH Aachen, Technical University Berlin, University of Stuttgart[44][45] and Konstanz.[40] Several Rollkugel mice installed at the Leibniz Supercomputing Centre in Munich in 1972 are well preserved in a museum,[35][46][36] two others survived in a museum at Stuttgart University,[44][37][36] two in Hamburg, the one from Aachen at the Computer History Museum in the US,[47][36] and yet another sample was recently donated to the Heinz Nixdorf MuseumsForum (HNF) in Paderborn.[48][43] Anecdotal reports claim that Telefunken's attempt to patent the device was rejected by the German Patent Office due to lack of inventiveness.[36][40][43][39] For the air traffic control system, the Mallebrein team had already developed a precursor to touch screens in form of an ultrasonic-curtain-based pointing device in front of the display.[39] In 1970, they developed a device named "Touchinput-Einrichtung" ("touch input device") based on a conductively coated glass screen.[40][39] 2351a5e196