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Keypoint-based passive method for image manipulation detection
Published in Cogent Engineering, 2018
Choudhary Shyam Prakash, Hari Om, Sushila Maheshkar, Vikas Maheshkar
Lin et al. (Lin, Wang, & Kao, 2009) proposed a method in which 9-Dimensional feature vector is used which contain the information about pixel intensities in some specific regions of the block. Instead of using lexicographical sort they used Radix sort which gives a linear time sorting. Their method is robust to JPEG compression and Gaussian blurring only. Wang et al. (Wang, Liu, Zhang, Dai, & Wang, 2010) initially applied GPD on input image then Hu moment of each block is calculated to extract the features. Their method is robust to JPEG compression, Gaussian blurring and Gaussian noise.
Fast hydrological model calibration based on the heterogeneous parallel computing accelerated shuffled complex evolution method
Published in Engineering Optimization, 2018
Guangyuan Kan, Xiaoyan He, Liuqian Ding, Jiren Li, Yang Hong, Depeng Zuo, Minglei Ren, Tianjie Lei, Ke Liang
Step 5. Shuffle complexes. Replace into , such that . Sort in order of increasing function value. The sorting process adopts the parallel radix sort algorithm described in Step 2.