Improving surf interest point detection for defocus blur robustness. - Elhusain Saad; Keigo Hirakawa (ICIP, 2015)

Defocus Blur-Invariant Scale-Space Feature Extractions. - Elhusain Saad; Keigo Hirakawa (IEEE Trans. Image Process., 2016)

Improved photometric acceptance testing in image feature extraction tasks. - Elhusain Saad; Keigo Hirakawa (J. Electronic Imaging, 2020)