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working color space

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working color space (In French espace colorimétrique de travail) standard RGB color space optimized for processing images (color corrections, retouching, creations), defined in the form ofan ICC profile, e.g. AdobeRGB, eciRGB, sRGB (see Table W-1 “Working color spaces” on page 104); the optimizations avoid typical device weaknesses with respect to color space scope (objective: a “wide gamut” which shows all technically reproducible color shades), uniformity (evenly distributed color space support points) and lightness axis (ideal: L* gradation as in CIELAB); depending on its direct reference to an input source or an output target, a w. is handled as “scene-referred” (scRGB, RIMM RGB) or “output-referred” (sRGB, ProPhotoRGB ROMM, Wide Gamut RGB, eciRGB). The device independent CIELAB color space, which does not have to be represented as a profile, can also serve as a w.