DescriptionJPEG Generation Loss rotating 90 (stitch of 0,100,200,500,900,2000 times).png	English: Showing JPEG compression loss when rotating a image 90 degrees iteratively with side lengths not factors of 8. Digital generation loss induced by rotating a JPEG image 90 degrees (from top to bottom) 0, 100, 200, 500, 900, and 2000 times (without using lossless tools). Deutsch: Verluste bei der JPEG-Komprimierung beim wiederholten Drehen um 90 Grad wenn die Seitenlängen nicht ein Vielfaches von 8 sind. Digitaler Generationsverlust durch Drehen eines JPEG-Bildes um 90 Grad (von oben nach unten) 0, 100, 200, 500, 900, und 2000 Mal (mit einem verlustbehafteten Bildbearbeitungsprogramm).
Date	5 May 2010
Source	Own work
Author	Burny
Permission (Reusing this file)	Public domainPublic domainfalsefalse I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Generator Code edit

The image is composed of some itaration steps of this bash-script using ImageMagik:

for i in {0..2001}; do 

convert GenerationLoss_step$i.jpg -rotate 90 -quality 85 GenerationLoss_step$(($i+1)).jpg

if [ $(($i%100)) -ne 0 ]; then
 rm GenerationLoss_step$i.jpg
fi
#
# (( i % 100 )) && rm GenerationLoss_step$i.jpg

echo -n "."

done