This is a WWW form interface to what should be considered a "Beta test" version of KREMY 2021 -- an improved image enhancement algorithm using a statistical model for pixel value error. When an image is captured using an electronic sensor, statistical variations introduced by photon shot and other noise introduce errors in the raw value reported for each pixel sample. The original version of KREMY (KentuckY Raw Error Modeler, pronounced "creamy") automatically constructed a detailed model of raw pixel value error, which it then used to constrain texture synthesis to refine the raw values of pixels. This new version build a very different model for pixel error: an approximate probability density function rather than simple bounds on error. The result is that the new KREMY can be much more aggressive in its texture synthesis, thus producing much better results when given very noisy images. The result is returned as an improved raw DNG file.
This page is generated by a server; the permanent address for KREMY is: http://aggregate.org/DIT/KREMY/
There are 3 steps to process an image using this form:
Note that this WWW form is not a file sharing site, but merely an interface for moving files through KREMY. Image ID references may become invalid at any time.
The WWW form interface for, and image processing in, KREMY is implemented using custom C code written by Hank Dietz. In this version, KREMY is invoked within an otherwise unmodified version of DCRaw, which is used to decode uncompressed 16-bit DNG files. Those uncompressed DNG files are created from camera raw files using Adobe DNG Converter, which also is used to losslessly compress the KREMY-improved DNG. This interface will only apply KREMY to raw files that ADC can convert into uncompressed 16-bit DNGs with a basic 4-color CFA. ExifTool is used to note use of KREMY in the DNG metadata. ImageMagick is used to make JPEG preview and probability map images. The CGI interface is implemented in C using the CGIC library.
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