| 摘要 |
An efficient technique for calibrating a scanner relative to a particular colorant set having N primary colorants. Once the scanner is calibrated, the scanner's device-dependent tristimulus values for an arbitrary color are transformed to a device-independent representation of the arbitrary color in a computationally efficient manner. The technique exploits the fact that the color space defined by the primary colorants can be advantageously partitioned, with each partition being represented by a transformation matrix that accurately characterizes the transformation for that partition of the space. The partitioning is characterized by a set of M key colors (in a specific embodiment, M=2N), each of which defines a boundary between adjacent partitions. |
