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Health Minister Rona Ambrose waits to speak in support of the Canadian Partnership Against Cancer ahead of World Cancer Day at the Maplesoft Centre for Cancer Survivorship Care, Monday, February 3, 2014 in Ottawa. THE CANADIAN PRESS/ Patrick Doyle
Health Minister Rona Ambrose speaks in support of the Canadian Partnership Against Cancer ahead of World Cancer Day at the Maplesoft Centre for Cancer Survivorship Care, Monday, February 3, 2014 in Ottawa. THE CANADIAN PRESS/ Patrick Doyle
I'll bet most FLICKR people know about the RGB color space, but I'll include the write-up I made for this video that I posted on another website. [by "RGB" I mean the IEC 61966-2-1 Default RGB Colour Space referred to as "sRGB"]
On typical computer monitors, most smart phone screens and and TV's, a color picture is displayed using thousands of tiny dots of colored light. The number of colors available at each individual dot is over 16.7 million! The RGB Color Cube shows how to display all those colors in an orderly fashion.
If you were going to display each of these 16M colors in its own little jar-of-light in an art-supply store, how would you arrange them on the shelves?
By plotting a well-chosen sample of only 4096 of those colors, the rotating cube-of-colored-spheres in this video presents an orderly way of arranging the 16M jars (All 16M colors would fill in the empty spaces between the 4096 actually shown). How are the 4096 colors organized in this cube? The short answer: any color produced on screen can be analyzed for how much Red light, how much Green light and how much Blue light was mixed together to make that color. A tiny sphere colored using this "RGB triple" of values is plotted inside the cube at location R,G,B. To find that location, travel R units along the cube's red axis, turn left and go G units parallel to the green axis, and finally, rise B units straight up in the direction of the blue axis. That's where you put the little sphere.
I give an example in my next post:
I produced this animation using the math software package "Maple", a MapleSoft product. I set Maple up to draw these spheres as viewed from 200 different positions around the cube, saved these individual frames as .png files, and combined them into the movie (an "mpeg", or ".mp4" file) using the program "ffmpeg".
I don't understand all the options available from that program, but at least got it to produce an animation where the frames seem to use all 16M colors. BUT while my .png files seem to preserve the sphere coloring (one color per sphere) the individual frames of the mpeg have those "jpeg" like artifacts in all the spheres that make them look splotchy-colored. You can see this if you pause the movie. To see the artifacts more clearly make a screen copy of a frame and enlarge it in your favorite editing program. I'll post an example of this also.
Vic (Maplesoft, hating having his picture taken! He's a man who likes to stay on the *other* side of the lens.)
Maplesoft Maple 2017.0 (x86) Full Ä°ndir
Öğrencilerin vazgeçilmez programlarından birisi olan Maplesoft Maple Full programı Dünya genelinde yaygın bir şekilde kullanılan matematik öğrenme ve matematik geliştirme programlarından birisidir. İçerisinde yüzlerce seçenek bulunduran bu yazılımı...