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Date: Tue, 10 Dec 1996 03:31:42 GMTServer: NCSA/1.4.2Content-type: text/html<html><head> <title>The Pixel Calculator</title></head><body><h1> <!WA0><!WA0><!WA0><img src=http://www.cs.washington.edu/research/metip/gif/pixel.gif> <p> <a name="top">The Pixel Calculator</a><br></h1><address> <!WA1><!WA1><!WA1><a href="http://www.cs.washington.edu/">Computer Science & Engineering Department,</a> <br> <!WA2><!WA2><!WA2><a href="ftp://ftp.u.washington.edu/public/">University of Washington,</a> FR-35, <br> <!WA3><!WA3><!WA3><a href="http://www.cs.washington.edu/area/">Seattle, WA</a> 98195 USA</address><hr> <p>The Pixel Calculator is intended primarily for use by students ofages 12-17 in a variety of enrichment activities involving mathematicsand digital image processing. The actual computations supportedby the program are manipulations of pixel values using operations of"pixel arithmetic."The Pixel Calculator program provides a good introduction for studentsto <href=digital.html><a>digital images</a> by allowingstudents to easily view and manipulate images as both visual and mathematical objects.For example, the user may magnify the image to view particularpixels and their numeric values.Using the Pixel Calculator's viewing capabilities and followingactivity suggestions in the users' guide, students can quicklyand enjoyably familiarize themselves with the relationship betweenpixel value and visual brightness.<p>The program also provides a calculator interface,which allows students to arithmetically manipulate thepixel values. Students quickly discover that very simple operations mayhave stark visual effects. For example the "255 - #" operation creates anegative of the image. <p>Here's a picture of <!WA4><!WA4><!WA4><a href=http://www.cs.washington.edu/research/metip/gif/pix_ex.gif>the Pixel Calculator's userinterface</a>. And here's how you can <!WA5><!WA5><!WA5><ahref="http://www.cs.washington.edu/research/metip/order_pix.html">order</a>your very own copy of the Pixel Calculator for Microsoft Windows. Click <!WA6><!WA6><!WA6><a href="http://www.cs.washington.edu/research/metip/order_mac_pix.html">here</a>if you would rather order the Macintosh version of the Pixel Calculator. <p>The pixel calculator was written as part of the <!WA7><!WA7><!WA7><a href=http://www.cs.washington.edu/research/metip/metip.html>METIP</a> project and was supported in part by theNational Science Foundation under grant number MDR-9155709.<body><p> <hr><address> bricker@cs.washington.edu or tanimoto@cs.washington.edu <br> Last modified: Wed Mar 9 00:03:58 PST 1994</address></html>⌨️ 快捷键说明
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