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Color wheel and Neutralizing colors

Posted by Jen in design & art on January 26th, 2009

A color wheel I made by paint of Gauche. Same thing for the neutralizing colors.

The wheel:

I found that Magenta is actually a very strong color.  Even if you only add a little, it will affect the result a lot. It’s just not easy to control, therefore, I feel the colors in the upper left of the wheel is easier to get than the rest of the colors.

However, I found the most difficult part is to get the neutral color.  I spent much time on this part. I found I can not really feel the hue on the palette until you paint it on the paper.  I guess this is because the hue is too subtal to be found in palette.

song_colorwheel

Neutralizing:

I basically mixed the colors in palette, instead of on paper.  I tried the way in the hint - paint one color on the paper first, then add different amount of the opposite color onto it… however, it doesn’t work for me… It seems that the colors don’t mix together on paper, the opposite color will simply cover the original color.

It’s very hard to adjust how much amount of white and black we should add to the colors to make it tint and saturated.  I guess we will have all different results.

I chose magenta for the greyed one.
intermixture

Named pipes

Posted by William in backend on January 24th, 2009

Pipes are very useful feature on Linux/Unix. It allow separate process to communicate easily.

A simple example:

grep xyz log | wc -l

first process finds the lines that has “xyz” in file “log, the output feeds to the second process which count the number of lines. So this simple pipe counts the number of lines in log that has xyz.

This kind of pipe is called “unnamed pipe”.

There are also “named” pipes, or FIFO. A named pipe is a file within the filesystem. A named pipe can be created by mkfifo (or mknod on older systems).

mkdir my_fifo

ls -l my_fifo

prw-r–r–  1   dexin users 0 2009-03-04 22:04 my_fifo

A simple use of named pipe: in two separate terminals,

ls -l > my_fifo

cat < pipe

you will see the output from the first command gets displayed on the second terminal. The order in which you run the command does not matter.

A more interesting example of using named pipe could be you have a log file that’s being updated periodically, and you want to parse the new lines in the log. You can have one process that tail -F on the log and redirect to a pipe, and another process takes the output from the pipe:

tail -F log > my_pipe

parser < my_pipe

How can you use dramatic color contrast to improve a design?

Posted by Jen in design & art, tutorials on January 20th, 2009

color_designcolorize_elements

Color, the very important element in design, gives a lot of information about what the design work is trying to say. It generates interesting visual effects, creates atmospheres, expresses emotion and feelings, conveys meaning and thus provides guidance to the audiences into the world of the specific design work. Getting multiple colors together, with different values and saturations, creates contrast.  And contrast leads to dimension Just like size, shape and position, color tells which objects are in the front, which ones are in the middle and others in the background.  The more dramatic difference the colors have, the more obvious dimension we get in the design.

Usually the color with higher value and saturation appear to be closer to the audience then those with lower value and saturation.  And combining colors with big difference in value and saturation can result to very distinguished dimensions. Objects with this dimension visual effect tend to appear more outstanding and get more attention.  This is because high contrast colors give the distinguished effect of dimension.  Examples can be found in the following situation.  Increasing the difference between the colors of text and its background to get a dramatic contrast can practically enhance the readability of the type.  Therefore, a great color contrast might be used to the main objects in the design for the purpose of making it an outstanding dimension from the background, while the supporting objects are always supposed to be in low color contrast to melt into the background.

The first image is a two-page commercial in the magazine VIA. This is an introduction to the travel agency, who travels mostly to China area, such as Hong Kong.  The page uses 2 major colors – Green and Red.  These two colors are the complementary in the color scheme.  In most design works, they are avoided to be together. It is just like a principle in design field that green doesn’t get along with red.  However, in this example of color contrast, the designer used these colors wisely and made the design a successful one.  First of all, the color theme in the design is green. The background is light green, and the main object in the front of the photo is fresh green.  On the other hand, red, although appear next to green, is not as dominant as green in this design, but just in a supporting role, only showing in the background, out of focus.  This way, the green Chinese style of umbrella is standing out of the photo to give a very appealing first sight to the audience.

Motion Graphics - Matrix

Posted by Jen in design & art, random thoughts on January 8th, 2009

matrix1matrix2matrix3matrix4

Matrix is the movie full of amazing motion graphics. It’s opening scene inspired lots of graphic designers and has been used in many different occasions and places. The scene consists of a black background with flowing codes running vertically in neon green. The movie name comes from the background changing from small letters to huge graphic. Black background makes the scene look mysterious, neon green running codes are the symbol of digital world. This motion graphic mimics the busy running of a computer with all the codes flying to same direction to do some complicated programming. This motion graphic exactly matches the movie’s theme - the world is just a program in the computer. It is a thoughtful movie, and the fancy motion grphics made it more interesting.

Leopard now

Posted by Jen in trends on January 6th, 2009

When it comes to daily life stuff, I am not really a fan of chasing the trend to do updates actively. Such attitudes certainly apply to the macbook pro that I’ve been using over the years on an extremely intense basis, I’d say. So when my boss finally requested to upgrade this baby to leopard OS for multiple times, I was as reluctant as I was to clean up my garage with millions of dust covered antiques. yes, my garage has everything, except cars. :P

It all happened within my expectation, problematic and exhausting. I’ve spent 2 full days, to do the very first step of this project - restore the hard drive to an external drive. Having tried USB, firewire and different external drives, different ways, restore from the install disk, restore from the desktop, went to mac forum and even called Apple customer service and being told my warranty is expired, I gave up. Had too much stuff in this baby - not just data, but also the applications which I have no clue how to reinstall since either the CDs are not handy any more or the keys are nowhere to dig out, to take the risk of upgrading without the full disk imaging backup is the last thing I would do.

Days later, I found this software - SuperDuper!, a renowned application for mac restoration. After 2 hours running, it gave me the exact same error message as the Disk Utility in mac says - “Restore failure, input/output error”! Right at the moment I was about to pass out, I found this log file with all my ecstasy. All right, so it turned out to be one of the millions of files in this machine is corrupted - it is the Flash CS3 video encoder. The restore worked perfectly right after I removed this brat.

Now I am with Leopard, will try Time Machine shortly.

sunrising at the bay

Posted by Jen in design & art on January 2nd, 2009

wc_sunrise_250

water color painting