GIMP UI brainstorm. Liquid Rescale GIMP plugin. Wavelet decompose. This plugin losslessly decomposes a layer of an image into layers of wavelet scales. This means that you can edit the image on different detail scales (frequencies). The trivial recomposition of the image can be done by GIMP's layer modes so you can see the results of your modifications instantly. Among the applications are retouching, noise reduction, and enhancing global contrast.
Wavelet scales An image can be transformed into a set of wavelet scales. There are detail scales and one residual. This plugin computes these scales losslessly and creates a new layer for each one. Skin retouching The problem with skin retouching is retaining skin detail but erasing spots and such. Noise reduction The human eye easily distinguishes noise from image detail. Local contrast If you change the residual scale instead of the detail scales you can change the brightness of the image or global contrast without affecting local contrast. JD Smith: Code - Exposure Blend. Exposure-blend: A GIMP plug-in for contrast blending 3 bracketed images. Download: The Problem Many typical photographic scenes contain far more dynamic range than modern digital cameras can record in a single exposure. Digital cameras are actually slightly worse in this respect than film cameras, since they are very unforgiving to the slightest over-exposure.
Bracketing Techniques To help overcome this limitation, you can bracket the shot using multiple exposures. A simpler method is available in contrast blending in which image data from multiple exposures are linearly combined to recover shadows and highlights. I wanted an easy to use but flexible tool which works with the GIMP, a free and powerful image manipulation program -- hence exposure-blend. Exposure-blend is similar in spirit (though different in technique) to Erik Krause's Contrast Blending PhotoShop Actions. Background Features Shooting Installation First install the GIMP, at least version 2.2.
Main Dialog Loading images Options Dark. GIMP Plugin Registry.