There are many ways to make a glitch! Sometimes it happens naturally, but here are four ways to control your glitch-making process. You may use the same image to make all four glitches, or use a variety of images. The most important part is that you experiment with glitch-making and get general idea of how it works. You will submit one glitched image for each technique, as well as the original image. Please title your files with your name and the name of the glitch generation process, example: Margaret_Text_1, Margaret_Text_Original.
1. Glitch Generation Through Data Bending (Code)
In this exercise, you will deliberately alter the code in an image to create glitch effects. This is called "databending."
- Retrieve a JPEG from the Internet or anywhere else. Make a backup copy.
- Open the copied file in Preview.
- Open the file in TextEdit. You are looking at two different interpretations of the same file, as text and as an image.
- Scroll about halfway into the file in TextEdit and type your name or other random text.
- Save the file and rename it "glitch1".
- Open glitch1 in Preview.
- Open your original file in TextEdit, and copy a block of text and paste it in a new location*. Save the file as "glitch2" and view your changes in Preview.
- Open your original file in TextEdit, and use the Find and Replace command. Save the file as "glitch3" and view your changes in Preview.
- Submit your favorite result to this assignment. Don't forget your original file, as well!
*Option: To restrict find and replace to just part of the image, copy a block of text to a new window, run find and replace, then paste it back in.
2. Glitch Generation Through Format Shifting
Start by opening a JPG file in Photoshop. Then do a "Save As" and save it as a Photoshop RAW file, with the channels in interleaved order.
- Open the Raw file.
Photoshop will display a dialog where you can set different attributes of the data. Modify the values as shown below in "Glitch options." (If you don’t alter any values, you will import the original image, unglitched.)
- Try modifying the width. First, just decrease it by 1, then try other values.
- Modify both width and height. The total number of pixels must be less than or equal to the original or Photoshop won’t open the file.
- What happens if you uncheck interleaving?
- What happens if you set the channels to 1 or 4?
Play around with the various options, save your favorites as JPGs, and submit one of them to this assignment.
3. Glitch Generator: Snorpey
Here is an image glitch generator that allows you to easily adjust and modify the amount and type of glitch on an image:
Try it out on an image of your own, and submit the result to this exercise.
4. Glitch Generator: MOSH
Mosh is an image generator that allows you to save a MOVIE of your glitch. Go ahead and play with it. Then save your favorite result and submit it here.