Rosa Menkman, The Glitch Moment(um)

Page 19

A databent Photoshop RAW (h=0) image (.RAW). | This image was constructed by opening the original three channel interleaved RAW image as a single channel (single color/greyscale) interleaved document. The image generated is a reversible databend. This image is uncompressed.

It is possible to save a RAW image file without a header (when you open the image in Photoshop, for example, you can choose header=0 in a pop-up box). When the RAW image is saved without a header the computer doesn’t know the dimensions or any other crucial information that is needed to reconstruct the image out of the image data. This opens up creative possibilities. It is for instance possible to input new dimensions for the image, change the amount of color channels or choose whether or not the image will be displayed as ‘interleaved’ or ‘non-interleaved’. In the case of a RAW image file, interleaving and non-interleaving refer to the order in which the RGB (Red, Green and Blue) color values of every pixel are stored. In an interleaved RAW image, the data is stored in a RGBRGBRGB sequence. When the image is saved in non-interleaved order, the RGB values are not ordered sequentially but have their own ‘layers’. By deviating from the values of the originally recorded image, the image can be displayed in a distorted way and the structure of the file becomes visible.

18


Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.