http://doi.org/10.1541/ieejias.137.576
真喜志 泰希1), 市川 周一1), 藤枝 直輝1), 山田 親稔2)
1) 豊橋技術科学大学 2) 沖縄工業高等専門学校
キーワード: バイラテラルフィルタ, 分布間距離, パラメータ推定, 高速化, 局所探索
A method that estimates the parameters for a bilateral filter, based on the distribution distance of the images, is proposed. This study presents a method to estimate a sub-optimal set of parameters in a reasonable execution time by using a local search method with adequate initial values. The image quality is slightly degraded when sub-optimal parameters are used, and therefore a second method is proposed to compensate the parameters to achieve better image quality. Parameter estimation time was reduced from 398 s (brute-force method) to 0.15s (proposed local search method) with a 2.8GHz Xeon processor. When the compensated parameters are used, the image quality was approximately equal to the optimal result.
