Selection and optimization of interpolation algorithm in RIP software
Gao You-xing · Journal of Northwest University · 2009
Aim To select appropriate interpolation algorithm for RIP(Raster Image Processor) software and optimize the compute speed of the selected algorithm.Methods By comparing the time and frequency characteristics of different interpolation algorithms,the cubic convolution interpolation is selected as interpolation algorithm of RIP software.Integer additive is used to replace float-point multiplication in the process of invert coordinates transformation.Row relativity of interpolation kernel matrix is adopted to reduce computation amount.Results The optimized algorithm promotes the process speed with fine quality.The optimized algorithm satisfies the requirement of large dimension inkjet printer′s RIP software.Conclusion The speed of optimized bicubic interpolation algorithm is faster than the non-optimized interpolation algorithm,but the smoothing effect of interpolation algorithm needs to be further improved.