文件列表:

imagematting-0.1\COPYING (18004, 2008-04-11)
imagematting-0.1\imagematting.cxx (19710, 2008-04-11)
imagematting-0.1\Makefile (455, 2008-04-11)
imagematting-0.1 (0, 2011-08-10)

------------ Compilation: ------------ use make to compile the software. You will need the lib SDL (Simple direct media layer) and its extension image-sdl. ---------------- Use of software: ---------------- Start with ./generic image whereas image can e.g., be of the format PNG, JPG, BMP. MIDDLE MOUSE BUTTON: Before starting the segmentation, click into the middle of the object to be segmented using the middle mouse button. If your object is none-convex, you may want to click into different parts of the object's interior during the segmentation. LEFT MOUSE BUTTON: With the left mouse button you can then start the segmentation by drawing along the object's silhouette. RIGHT MOUSE BUTTON: Manually drawing the alpha mate can be done with the right button. If your brush (the circular brush is not displayed) come from an opaque area of the image, it will draw with an opaque alpha value, if you start the brush in a transparent area, it will continue to draw transparent. CHANGE BRUSH SIZE: Using the keys '1' - '4' changes the size of the brush. TOGGLING BACKGROUND: Use 'b' key to toggle the background between the checkerboard pattern and white. Quite program with 'q'. ---------------------- Purpose of the program ---------------------- Image segmentation tools aim at providing a designer with a scissor-like tool for cutting out objects from the background. Clear cuts can be found for all objects which are clearly separated from their environment. However, for objects with fuzzy borders and semi-transparent areas, there is not clear outline. The pixels showing those objects are usually a mixture of a foreground- and background color. In this case, a so-call alpha-channel should be created which defines for every pixel to which degree the background shines through the foreground. Then, the background color should be subtracted. The process which generates this alpha-mat is called image matting. This application requires the user to define a rough boundary of an object with a large brush. During the drawing, a high-quality segmentation is generated, interactively. Problematic areas can still be edited manually by the user.

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