
v5.0 [Jan 8, 2014]
Now available as both an x86 (32-bit) version and a brand new x64 (64-bit) version. The x64 version is a bit faster – e.g. ~10% faster JPEG decoding.
Added true support for "deep color" images (16 bits/color component). Earlier versions would read such files too, but threw away the lower 8 bits and wouldn't write them. I can now write them too, and color adjustment, image resizing et c is done at the full data precision.
Added support for "HDR" images (high dynamic range images with 32-bit floating point/color component). Image processing operations are done at full precision here too.
High quality Floyd-Steinberg dithering is now supported for down converting deep color and HDR images to 8-bits/component. This can greatly improve the perceived image quality!
Improved conversion to 2/4/8/16/32/64/128/256 color output (improved palette calculation better error limiting for dithering preservation of exact colors when dithering).
Added support for reading and writing the Radiance RGBE HDR image format (.HDR/.PIC/.IMG).
Added support for reading and writing .TIFF's and .PSD's with floating point HDR data.
Added support for reading and writing .TIFF's with SGI RLE compressed LogLuv and LogL-format HDR data.
Added support for reading TIFF's with SGI LogLuv24-format HDR data.
Added support for reading .PFM floatmap format.
Added SSE4.1 instruction support.
Built with our new ieC v2.0 library ("Image Engine in C ").
v4.1 [Mar 20, 2008]
New in v4.1: Pattern renaming and improved index creation.
Converts documents and multimedia files to other formats with batch support