基于单元多项式回归法的扫描仪色彩校正研究

针对IT8.7/2色靶及自定义色靶,采用单元多项式回归法,进行扫描仪RGB到Lab颜色空间的转换,以实现扫描仪的色彩校正.结果表明:针对IT8.7/2色靶,当采用5级均等分割中心点并采用13项50点进行多项式回归时,精度相对较高,效果较好;针对自定义色靶,当采用8级均等分割中心点并采用19项180点进行单元多项式回归时,精度相对较高,效果较好.采用单元多项式回归法,可提升扫描仪RGB到Lab颜色空间的转换精度,并节约计算时间,能有效实现扫描仪的色彩校正,且处理过程更简便、直观.

Study on Correction Unit Polynomial Regression Method Based on Color Scanner

Network security situation awareness has become a hot research topic in the next generation security technology, and it is expected to solve the network security and management issues. In view of the current security situation anomaly detection with high space-time complexity and difficult operating problems, presents a feasible quantitative method through introducing a group of samples and using the hypothesis test for the abnormal detection of network security situation. The method can predict the trend of system security situation and provides a reliable basis for the network administrator's decision making and defensive measures, do nip in the bud. Finally, the proposed anomaly detection technique and algorithm of the network security situation are verified by using the simulation data. The results show that the method is correct and has the advantages of simple and feasible.