Oct. 17, 2011
at Tokyo Keizai Univ., Tokyo
Live Performance – Glitch Art Workshop
BSoD
Blue Screen of Death with Gates.
My PC made by Acer was
Watching – Glitch Workshop
Aug. 21, 2011
Tokyo Univ. of Arts, Tokyo
Kenko MIZUMOTO
visual: ucnv
sound: HARIYA shusaku and
Exhibition – Indie Space AGIT
Aug. 2 – Aug. 3, 2011
Jangjeong Dong , Busan, Korea
-
- Exhibition at Agit’s rooftop gallery
-
- Jazoo Yang and Jungmin Lee with my video work
-
- Onchon-jan
-
- Buildings around Agit
-
- Gun-u and Jungmin Lee
-
- Gun-u, Hun Joo Koo, Seunghwan Kim
-
- Hun Joo Koo
-
- Seunghwan Kim
Exhibition – nospace
Feb. 4 – Feb. 6, 2011
RCA, Bangkok, Thailand
Around 2009 – 2010
I started adopting the methods of glitch naturally.
An original footage is a work of Yasuhiro Yamane, who is a member of Swamp Publication.
Taking a picture by old digital camera which is not high resolution, I could get a lot of noise.
Before 2009 – Obsession with Francis Bacon
I was thinking about him everyday.
Glitch Study – A Difference of File Format
A gallery of glitch-alike images designed by using Monglot.
Original image：
Monglot is a software let us generate glitching images very easily and is able to dwonload from here.
And a manual for the software is here.
It might be nothing special for those who are glitch experiencer, but it’s easy to mass-produce so it seems useful to generate glitch-like images in bulk for design.
This is a drill of glitch as software.
JPEG
JPEG – effefcted hevily
JPEG2000
GIF
Glitch Study – PNG Image Glitch
What is PNG(Portable Network Graphics）
wikipedia says,
An image-file format designed for transferring images on the Internet.
Having alpha channel and losslesser data compression than GIF.
“PNG’s Not GIF”For the reason of its architecture, the image quality wouldn’t get to be low even if it is saved repeatedly, unlike JPEG.
Compression Algorithm
PNG has a process called filtering, which will be done before compressing. At first it averages the difference between pixel to pixel, and then does compression.
There are 5 types of filter, and that means the difference of a direction for averaging, like vertical, horizontal, oblique and so on.
Refer to wikipedia also for further information
Glitch of PNG image
Let’s get down to business.
We play with above filtering algorithm. When a PNG image-file is displayed on some application such as web browser,at first the application will determine which type of filter was applied to compress the original image-file, and then it will interpret the image-file using valid decoder corresponding to each filter type.
And as you can guess, we juggled the decoding system. By replacing the decode mode with arbitrary mode, the image is shown in different from original one.
This is a glitch not in the process of creating image-file, but in the process of translating image-file, so the effect result from this is limited to a certain level.
We examined each five decoding pattens, and recorded those processes as movie. See below.
original
Type 0: None
It seems to get to be monochrome, but I don’t know why.
Type 1: Sub
Type 2:Up
Type 3:Average
Type 4:Paeth
The code for this glitching program was written by Shu TAKANO, and built with Processing.
Before long, it will be uploaded as source code itself or as stand alone software, but if you have some interest, feel free to ask us from here.