https://www.bruno.postle.net/older-stuff/2001/Recent content in 2001 on StuffHugoen-gbSun, 14 Jun 2009 14:47:38 +0000https://www.bruno.postle.net/older-stuff/2001/mt66/Wed, 13 Jun 2001 22:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/mt66/<p><a href="2001-06-13-245-view-from-kayam.jpg" title="2001 06 13 245 view from kayam"><img src="2001-06-13-245-view-from-kayam.jpg,small" alt="2001 06 13 245 view from kayam"></a></p> <p><a href="2001-06-13-266-outside-all.jpg" title="2001 06 13 266 outside all"><img src="2001-06-13-266-outside-all.jpg,small" alt="2001 06 13 266 outside all"></a></p> <p><a href="2001-06-13-270-outside-lacing.jpg" title="2001 06 13 270 outside lacing"><img src="2001-06-13-270-outside-lacing.jpg,small" alt="2001 06 13 270 outside lacing"></a></p> <p><a href="2001-06-13-272-outside-lacing.jpg" title="2001 06 13 272 outside lacing"><img src="2001-06-13-272-outside-lacing.jpg,small" alt="2001 06 13 272 outside lacing"></a></p> <p><a href="2001-06-13-276-inside.jpg" title="2001 06 13 276 inside"><img src="2001-06-13-276-inside.jpg,small" alt="2001 06 13 276 inside"></a></p> <p><a href="2001-06-13-279-lacing-fitting.jpg" title="2001 06 13 279 lacing fitting"><img src="2001-06-13-279-lacing-fitting.jpg,small" alt="2001 06 13 279 lacing fitting"></a></p> <p><a href="2001-06-13-280-inside-poles.jpg" title="2001 06 13 280 inside poles"><img src="2001-06-13-280-inside-poles.jpg,small" alt="2001 06 13 280 inside poles"></a></p>https://www.bruno.postle.net/older-stuff/2001/kayam-concert-tent/Wed, 13 Jun 2001 22:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/kayam-concert-tent/<p><a href="2001-06-13-006-distance.jpg" title="2001 06 13 006 distance"><img src="2001-06-13-006-distance.jpg,small" alt="2001 06 13 006 distance"></a></p> <p><a href="2001-06-13-017-inside.jpg" title="2001 06 13 017 inside"><img src="2001-06-13-017-inside.jpg,small" alt="2001 06 13 017 inside"></a></p> <p><a href="2001-06-13-026-inside.jpg" title="2001 06 13 026 inside"><img src="2001-06-13-026-inside.jpg,small" alt="2001 06 13 026 inside"></a></p> <p><a href="2001-06-13-032-inside.jpg" title="2001 06 13 032 inside"><img src="2001-06-13-032-inside.jpg,small" alt="2001 06 13 032 inside"></a></p> <p><a href="2001-06-13-093-inside.jpg" title="2001 06 13 093 inside"><img src="2001-06-13-093-inside.jpg,small" alt="2001 06 13 093 inside"></a></p> <p><a href="2001-06-13-101-inside.jpg" title="2001 06 13 101 inside"><img src="2001-06-13-101-inside.jpg,small" alt="2001 06 13 101 inside"></a></p> <p><a href="2001-06-13-107-inside.jpg" title="2001 06 13 107 inside"><img src="2001-06-13-107-inside.jpg,small" alt="2001 06 13 107 inside"></a></p> <p><a href="2001-06-13-111-inside-panorama-e1.jpg" title="2001 06 13 111 inside panorama e1"><img src="2001-06-13-111-inside-panorama-e1.jpg,small" alt="2001 06 13 111 inside panorama e1"></a></p>https://www.bruno.postle.net/older-stuff/2001/no-fit-state/Wed, 13 Jun 2001 22:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/no-fit-state/<p><a href="2001-06-13-040-side-poles.jpg" title="2001 06 13 040 side poles"><img src="2001-06-13-040-side-poles.jpg,small" alt="2001 06 13 040 side poles"></a></p> <p><a href="2001-06-13-043-cuploa-ring-joining.jpg" title="2001 06 13 043 cuploa ring joining"><img src="2001-06-13-043-cuploa-ring-joining.jpg,small" alt="2001 06 13 043 cuploa ring joining"></a></p> <p><a href="2001-06-13-050-cupola-ring-junction.jpg" title="2001 06 13 050 cupola ring junction"><img src="2001-06-13-050-cupola-ring-junction.jpg,small" alt="2001 06 13 050 cupola ring junction"></a></p> <p><a href="2001-06-13-055-cupola-ring-junction.jpg" title="2001 06 13 055 cupola ring junction"><img src="2001-06-13-055-cupola-ring-junction.jpg,small" alt="2001 06 13 055 cupola ring junction"></a></p> <p><a href="2001-06-13-056-hoop-socket.jpg" title="2001 06 13 056 hoop socket"><img src="2001-06-13-056-hoop-socket.jpg,small" alt="2001 06 13 056 hoop socket"></a></p> <p><a href="2001-06-13-057-cupola-ring-join.jpg" title="2001 06 13 057 cupola ring join"><img src="2001-06-13-057-cupola-ring-join.jpg,small" alt="2001 06 13 057 cupola ring join"></a></p>https://www.bruno.postle.net/older-stuff/2001/telescope/Mon, 05 Feb 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/telescope/<blockquote> <p>A proposal for building a telescope using a number of cylindrical/parabolic mirrors instead of spherical/parabolic mirrors. Bruno Postle, February 2001.</p> </blockquote> <h2 id="description">Description</h2> <p>This is an alternative method of constructing an optical system that involves the use of singly curved rather than doubly curved mirror surfaces. Traditional telescope optics typically use circular mirrors with a doubly curved synclastic parabolic shape. This system uses a pair of singly curved rectangular mirrors at right angles to each other to achieve the same effect.</p>https://www.bruno.postle.net/older-stuff/2001/curve-test/Fri, 12 Jan 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/curve-test/<p><img src="input.png" alt="Input"></p> <p>Original test image.</p> <p><img src="panel0.png" alt="Panel0"></p> <p><img src="panel1.png" alt="Panel1"></p> <p><img src="panel2.png" alt="Panel2"></p> <p><img src="panel3.png" alt="Panel3"></p> <p><img src="panel4.png" alt="Panel4"></p> <p><img src="panel5.png" alt="Panel5"></p> <p>original image sliced using command ‘ip-slicer.pl 6 600 input.png’</p>https://www.bruno.postle.net/older-stuff/2001/image-patterner/Fri, 12 Jan 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/image-patterner/<h2 id="image-patterner-example-output">Image patterner example output</h2> <p>Image patterner is an extension of a technique for creating two dimensional ‘panel’ patterns of complex three dimensional surfaces. This technique has been extended to allow pre-printing of full colour designs onto (for example) fabric before cutting and assembly. Designs can cross seam boundaries without the dislocation that would otherwise be caused by the complex curvature of the surface.</p> <p><img src="perspective.jpg" alt="Perspective"></p> <p>Figure 1. Perspective view of surface before patterning. The flat surface at the top is the source image. The mesh at the bottom is a standard anti-clastic shape output from patterner. The surface in the middle shows how the the image is mapped onto the mesh.</p>https://www.bruno.postle.net/older-stuff/2001/ip-slicer/Fri, 12 Jan 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/ip-slicer/<p>This is a script for taking a spherical panorama image (or a spherical globe map) and slicing it into segments suitable for sticking together into a 3d sphere, it is part of the <a href="http://search.cpan.org/dist/Image-RGBA/" title="Functions for sampling simple RGBA images">Image::RGBA perl module</a> on CPAN.</p> <p>All the images on this page are based on the same source panorama image. The panels are reduced to fit and are links to the full size original versions.</p>https://www.bruno.postle.net/older-stuff/2001/paper-planets/Fri, 12 Jan 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/paper-planets/<p>This map of the moon was created from image data taken by the Clementine spacecraft. You can find the source map at the <a href="http://www.solarviews.com/cap/moon/moonmap.htm" title="This map of the moon was created from image data taken by the Clementine spacecraft">Solarviews</a> website along with lots of other space related images.</p> <p><a href="moon.jpg" title="Moon"><img src="moon.jpg,small" alt="Moon"></a></p> <p>This model is based on a <a href="http://ltpwww.gsfc.nasa.gov/tharsis/c2880x2160.jpg" title="colourised relief map of mars">colourised relief map of mars</a>. Assembled from data retrieved by <a href="http://ltpwww.gsfc.nasa.gov/tharsis/mola.html" title="The Mars Orbiter Laser Altimeter">The Mars Orbiter Laser Altimeter</a>, an instrument currently in orbit around Mars on the Mars Global Surveyor (MGS) spacecraft.</p>https://www.bruno.postle.net/older-stuff/2001/spherical-mapping/Fri, 12 Jan 2001 23:11:54 +0000https://www.bruno.postle.net/older-stuff/2001/spherical-mapping/<p>The source image for this example is a nasa map of the world showing Sea algae colour. There is no significance to this image, it just happens to be high-resolution and suitable for spherical mapping. Any Image would do for this job including a spherical panorama type image.</p> <p>Image patterner is capable of mapping an image onto any rectangular mesh surface, not just a sphere (which is a special case of a rectangular mesh with double curvature). Different mapping types include planar and cylindrical as well as spherical.</p>