Grok
JPEG 2000


Lightning-fast image display and storage

About Grok

Grok develops open source and commercial JPEG 2000 toolkits.

Open Source

Grok makes an open, fast and rock-solid JPEG 2000 toolkit.

Fork us on Github.

Fork on Github

Commercial Encoder

Input

single-frame TIFF images
8,10,12 and 16 bit precision
2K, 4K resolution
lossy, DCI, visually lossless, mathematically lossless
Greyscale, RGB, XYZ colour formats

Output

single-frame JPEG 2000 images

Recommended hardware

AMD Ryzen 1700X 8-core CPU
AMD Radeon RX-570 graphics card
Windows 10 64 bit

Performance

(actual speed depends on image content)
2K lossless compression of 12 bit, RGB, 4:4:4 TIFF images : 60 FPS
2K@24 DCI compression of 12 bit, RGB, 4:4:4 TIFF images : 50 FPS
4K@24 DCI compression of 12 bit, RGB, 4:4:4 TIFF images: 12 FPS