It’s the most successful technology of its kind in the market and behind high-quality still and video captures modes in DSCs, DSLRs, smartphones and video cameras by major brands.
iridix is a form of dynamic range compression (also known as tone mapping) and is the product of over a decade’s research into how the human visual system adjusts to different lighting conditions
It applies different processing to each pixel of each video frame to pull out hidden detail in shadows and highlights while preserving colors, local contrast and natural appearance.
In the image above, iridix applies pixel-by-pixel tone curve adjustment automatically to pull out detail simultaneously from shadows and highlights while leaving midtones untouched. The image on the right matches closely the real appearance of the scene.
- Space-variant dynamic range compression (local tone mapping)
- Non-linear color management
- Natural imagery suitable for full embedding into camera pipeline
- Still images up to 256MPixel, video to 16MP
- Bayer-domain or RGB/YCbCr processing
The image on the right is achieved in a single exposure using a conventional DSC/smartphone camera module.
Multiple image captures are combined using motion compensation algorithms to prevent ghosting, to produce HDR images up to 20 bits per pixel.
iridix can compress dynamic range by up to 60dB to retain all HDR image content in standard 8-bit camera output while retaining natural image appearance.
Apical provides complete HDR camera subsystems based on iridix, including image pre-processing, HDR autoexposure and dynamic range compression (tone mapping).
- Semiconductor IP cores, silicon-proven to 28nm
- OS-independent embedded software libraries
- OpenGL and OpenCL software libraries
All implementations of iridix are compact, low-power and support high pixel rates.
- accurate human eye model
- Compact, fast, low-power
- Used in over 250 million devices to date
- Supports single and multi-frame HDR
- iridix version 7 supports HDR processing at up to 500 MPixel/sec