Method to determine encoder parameters

A method performed by an apparatus to determine compression parameters to choose when compressing images or videos for use in a machine vision task, the method comprising:

• compressing an uncompressed original image or video at a plurality of different quality levels and/or bit rates to create a plurality of compressed images or videos;
• for each compressed image or video compressed at the different quality levels and/or bit rates:
• decompressing the compressed image or video to create a decompressed image or video;
• executing a machine vision algorithm on the decompressed image or video to generate machine vision results for the decompressed image or video;
• deriving a performance value indicating a performance of the decompressed image or video based on comparing the machine vision results to an assumed truth;
• and
• determining a quality level and/or bit rate to use in the machine vision task based on the performance value for each decompressed image or video compressed at the different quality levels and/or bit rates.