tailieunhanh - COLOR MANAGEMENT- P4

COLOR MANAGEMENT- P4: ICC White Papers are one of the formal deliverables of the International Color Consortium, the other being the ICC specification itself – ISO 15076: Image technology color management – Architecture, profile format, and data structure. The White Papers undergo an exhaustive internal development process, followed by a formal technical review by the membership and a ballot for approval by the ICC Steering Committee. | 74 General and flare that are not corrected for and color analysis errors due to capture device metamerism. In some cases these sources of inaccuracy can be significant. ISO 17321-1 specifies a DSC SMI Sensitivity Metamerism Index which can be used to estimate the amount of inaccuracy resulting from capture device metamerism. NOTE 4 The transformation from raw DSC image data to scene-referred image data depends on the relative adopted whites selected for the scene and the color space used to encode the image data. If the chosen scene adopted white is inappropriate additional errors will be introduced into the scene-referred image data. These errors may be correctable if the transformation used to produce the scene-referred image data is known and the color encoding used for the incorrect scene-referred image data has adequate precision and dynamic range. NOTE 5 Standard methods for the calculation of scene-referred image data from raw DSC image data will be specified in ISO 17321-2. NOTE 6 The scene may correspond to an actual view of the natural world or a computergenerated simulation of such a view. It may also correspond to a modified scene determined by applying modifications to an original scene to produce some different desired scene. Any such scene modifications should leave the image in a scene-referred image state and should be done in the context of an expected color rendering transform. Screen angle with oblong-shaped half-tone dots the angle which the principal axis of the screen makes with the reference direction with circular and square dot shapes the smallest angle which an axis of the screen makes with the reference direction. ISO 12647-1 Screen frequency screen ruling number of image elements such as dots or lines per unit of length in the direction which produces the highest value. ISO 12647-1 Screen width reciprocal of screen ruling. ISO 12647-1 Secondary ink colors colors obtained by overprinting pairs of the three chromatic inks. Derived from .