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Category: Project

Description: For this study, we used a dataset of five source images that were compressed by two codecs, VVC Intra and JPEG XL from JPEG AIC-3 database. This resulted in 10 sequences of 11 cropped images each, starting with the source at distortion level 0 and increasing levels from 1 to 10. ​ We conducted our experiment on the MTurk platform. We posted one human intelligence task (HIT) with 200 assignments for 200 unique crowdworkers. In each assignment, besides the training questions, a worker had to answer 120 study and trap questions in random order, once with feedback and then again in different random order without feedback.