JPEG2000 Decoding Performance

The OpenJPEG project just integrated a PR which added support for decoding across multiple threads.  I decided to do a quick performance comparison to see where things are:

3063x4664x16 bit grayscale JPEG2000 Image (MG1_J2KR) from dclunie’s compression samples here:

ftp://medical.nema.org/MEDICAL/Dicom/DataSets/WG04

On my MacBook Pro (Retina, 15-inch Mid 2014 2.8 GHz Intel Core i7 macOS Sierra):

Kakadu (v7_8-01480C) decompress with 8 threads - .345 seconds

Kakadu (v7_8-01480C) decompress with 1 thread – 1.7862 seconds

OpenJPEG (master) decompress with 1 thread – 4.165 seconds

OpenJPEG (master) decompress with 8 threads – 2.113 seconds

OpenJPEG (2.1.1) decompress with 1 thread – 4.847 seconds

Grok (master) decompress with 1 thread– 2.810 seconds

Quick Summary:

*) Kakadu is still king.  They have a new speedpack add on that supposedly improves decode performance 50%

*) Grok has made some strong performance improvements over OpenJPEG

*) The OpenJPEG multi-core work is a fantastic enhancement

I also ran numbers for cornerstone which I will be presenting at the OHIF Community meeting Sept 28 which everyone is invited to attend:

https://groups.google.com/forum/#!topic/cornerstone-platform/itQDQ9PsWJE

Chris