Low Cost Edge Sensing for High Quality Demosaicking
Low Cost Edge Sensing for High Quality Demosaicking
复制标题
用于高质量去马赛克的低成本边缘传感
DOI:
10.1109/tip.2018.2883815
复制
发表时间:
2018-06
影响因子:
10.6
通讯作者:
牛砚
中科院分区:
文献类型:
--
作者:
牛砚
Digital cameras that use Color Filter Arrays (CFA) entail a demosaicking procedure to form full RGB images. To digital camera industry, demosaicking speed is as important as demosaicking accuracy, because camera users have been accustomed to viewing captured photos instantly. Moreover, the cost associated with demosaicking should not go beyond the cost saved by using CFA. For this purpose, we revisit the classical Hamilton-Adams (HA) algorithm, which outperforms many sophisticated techniques in both speed and accuracy. Our analysis shows that the HA pipeline is highly efficient to exploit the originally captured data, but its oversimplified inter- and intra-channel smoothness formulation hinders its accuracy. We therefore propose a very low cost edge sensing scheme, which guides demosaicking by a logistic functional of the difference between directional variations. We extensively compare our algorithm with 27 demosaicking algorithms by running their open source codes on benchmark datasets. Compared to methods of similar computational cost, our method achieves substantially higher accuracy; Whereas compared to methods of similar accuracy, our method has significantly lower cost. On test images of currently popular resolution, the quality of our algorithm is comparable to top performers, yet our speed is tens of times faster. Source code for this work will be released with paper publication.
登录
查看更多内容
DOI:
--
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Run-xu Tan;K. Zhang;W. Zuo;Lei Zhang
通讯作者:
Run-xu Tan;K. Zhang;W. Zuo;Lei Zhang
DOI:
10.1109/icip.2014.7025358
发表时间:
2014-10
期刊:
2014 IEEE International Conference on Image Processing (ICIP)
影响因子:
--
作者:
Mattia Rossi;G. Calvagno
通讯作者:
Mattia Rossi;G. Calvagno
影响因子:
10.6
作者:
Hirakawa, K;Parks, TW
通讯作者:
Parks, TW
影响因子:
4.3
作者:
Chung-Yen Su
通讯作者:
Chung-Yen Su
DOI:
10.1109/tcsvt.2014.2313896
发表时间:
2015-08
影响因子:
8.4
作者:
Xiangdong Chen;Liwen He;Gwanggil Jeon;Jechang Jeong
通讯作者:
Xiangdong Chen;Liwen He;Gwanggil Jeon;Jechang Jeong