Emphasis on mathematical thinking and teaching strategies on using shapes to create polygons. Students can also investigate various properties of triangles, quadrilaterals, and regular polygons.
System of two computer programs POLYEDIT and POLYCODE which permits application of GBF/DIME system to administrative, operational, and research programs at local level by State and Federal agencies.
Image Synthesis: Theory and Practice is the first book completely dedicated to the numerous techniques of image synthesis. Both theoretical and practical aspects are treated in detail. Numerous impressive computer-generated images are used to explain the most advanced techniques in image synthesis. The book contains a detailed description of the most fundamental algorithms; other less important algorithms are summarized or simply listed. This volume is also a unique handbook of mathematical formulae for image synthesis. The four first chapters of the book survey the basic techniques of computer graphics which play an important role in the design of an image: geometric models, image and viewing transformations, curves and surfaces and solid modeling techniques. In the next chapters, each major topic in image synthesis is presented. The first important problem is the detection and processing of visible surfaces, then two chapters are dedicated to the central problem of light and illumination. As aliasing is a major problem in image rendering, the fundamental antialiasing and motion blur techniques are explained. The most common shadow algorithms are then presented as well as techniques for producing soft shadows and penumbrae. In the last few years, image rendering has been strongly influenced by ray tracing techniques. For this reason, two chapters are dedicated to this important approach. Then a chapter is completely dedicated to fractals from the formal Mandelbrot theory to the recursive subdivision approaches. Natural phenomena present a particularly difficult challenge in image synthesis. For this reason, a large portion of the book is devoted to latest methods to simulate these phenomena: particle systems, scalar fields, volume density scattering models. Various techniques are also described for representing terrains, mountains, water, waves, sky, clouds, fog, fire, trees, and grass. Several techniques for combining images are also explained: adaptive rendering, montage and composite methods. The last chapter presents in detail the MIRALab image synthesis software.
XHTML XHTML is a markup language for Web pages from the W3C(World Wide Web Consortium). XHTML combines HTML and XML into a single format (HTML 4.0 and XML 1.0). Like XML, XHTML can be extended with proprietary tags. Also like XML, XHTML must be coded more rigorously than HTML. Over the years, HTML coders have become sloppy, because Web browser software was originally written to tolerate many variations in HTML coding, but, with XHTML, coders must conform to the XML rules. In one sentence we can say that XHTML is a superset of HTML, but unlike HTML it is stricter to rules and requires a document to follow XML rules. Whereas HTML is an application of SGML, a very flexible markup language, XHTML is an application of XML, a more restrictive subset of SGML. Because they need to be well-formed, true XHTML documents allow for automated processing to be performed using standard XML tools unlike HTML, which requires a relatively complex, lenient, and generally custom parser. XHTML can be thought of as the intersection of HTML and XML in many respects, since it is a reformulation of HTML in XML.
The author presents his advice and practice routines for composing and capturing photographs of people, illustrated with examples from his own practice sessions and from his extensive work photographing weddings around the world.