The interferences,such as the background,eyebrows,eyelashes,eyeglass frames,illumination variations,and specular lens reflection pose challenges for pupil localization in natural scenes.In this paper,we propose a nove...The interferences,such as the background,eyebrows,eyelashes,eyeglass frames,illumination variations,and specular lens reflection pose challenges for pupil localization in natural scenes.In this paper,we propose a novel method comprising improved YOLOv8 and Illumination Adaptive Algorithm(IAA),for fast and accurate pupil localization in natural scenes.We introduced deformable convolution into the backbone of YOLOv8 to enable the model to extract the eye regions more accurately,thus avoiding the interference of background outside the eye on subsequent pupil localization.The IAA can reduce the interference of illumination variations and lens reflection by adjusting automatically the grayscale of the image according to the exposure.Experimental results verified that the improved YOLOv8 exhibited an eye detection accuracy(IOU≥0.5)of 90.2%,while the IAA leads to a 9.15%improvement on 5-pixels error ratio e5 with processing times in the tens of microseconds on GPU.Experimental results on the benchmark database CelebA show that the proposed method for pupil localization achieves an accuracy of 83.05%on e5 and achieves real-time performance of 210 FPS on GPU,outperforming other advanced methods.展开更多
We study the insulated conductivity problem with inclusions embedded in a bounded domain in R^(n).When the distance of inclusions,denoted byε,goes to 0,the gradient of solutions may blow up.When two inclusions are st...We study the insulated conductivity problem with inclusions embedded in a bounded domain in R^(n).When the distance of inclusions,denoted byε,goes to 0,the gradient of solutions may blow up.When two inclusions are strictly convex,it was known that an upper bound of the blow-up rate is of orderε^(-1/2)for n=2,and is of orderε^(-1/2+β)for someβ>0 when dimension n≥3.In this paper,we generalize the above results for insulators with flatter boundaries near touching points.展开更多
Many contemporary Islamic terrorist groups have been identified as forms of religious fundamentalism.Moreover,the narratives and representations constructed by many of these groups contain traces of religious fundamen...Many contemporary Islamic terrorist groups have been identified as forms of religious fundamentalism.Moreover,the narratives and representations constructed by many of these groups contain traces of religious fundamentalism.In this article,ETIM/TIP’s narratives and representations are examined as a case study.The group’s power discourses as they relate to religious fundamentalism are analyzed through examining the group’s rhetoric of its own origin,its current situation,and its reactions toward this situation.The power discourse of an unconventional“Orientalism”and the use of behaviorist logic are especially emphasized.Furthermore,the presence of behaviorism in religious fundamentalist narratives suggests the need for China to revise its official national counterterrorist discourse.Instead of continuing the current behaviorist rhetoric in the legal framework,this article suggests a deconstruction-ultimately,a discouragement-of religious behaviorism to prevent the radicalization of Muslims in the country.展开更多
基金supported by Guangdong Yangfan Program for Innovative and Entrepreneurial Teams(Grant No.2017YT05G026)the Natural Science Foundation of China(Grant No.51975126)+1 种基金the Key Research and Development Program of Guangdong Province(Grant No.2019B090915001)the Natural Science Foundation of Guangdong Province(Grant No.2022A1515012605).
文摘The interferences,such as the background,eyebrows,eyelashes,eyeglass frames,illumination variations,and specular lens reflection pose challenges for pupil localization in natural scenes.In this paper,we propose a novel method comprising improved YOLOv8 and Illumination Adaptive Algorithm(IAA),for fast and accurate pupil localization in natural scenes.We introduced deformable convolution into the backbone of YOLOv8 to enable the model to extract the eye regions more accurately,thus avoiding the interference of background outside the eye on subsequent pupil localization.The IAA can reduce the interference of illumination variations and lens reflection by adjusting automatically the grayscale of the image according to the exposure.Experimental results verified that the improved YOLOv8 exhibited an eye detection accuracy(IOU≥0.5)of 90.2%,while the IAA leads to a 9.15%improvement on 5-pixels error ratio e5 with processing times in the tens of microseconds on GPU.Experimental results on the benchmark database CelebA show that the proposed method for pupil localization achieves an accuracy of 83.05%on e5 and achieves real-time performance of 210 FPS on GPU,outperforming other advanced methods.
基金The first author is partially supported by NSF Grants DMS-1501004,DMS-2000261,Simons Fellows Award 677077The second author is partially supported by NSF Grants DMS-1501004 and DMS-2000261.
文摘We study the insulated conductivity problem with inclusions embedded in a bounded domain in R^(n).When the distance of inclusions,denoted byε,goes to 0,the gradient of solutions may blow up.When two inclusions are strictly convex,it was known that an upper bound of the blow-up rate is of orderε^(-1/2)for n=2,and is of orderε^(-1/2+β)for someβ>0 when dimension n≥3.In this paper,we generalize the above results for insulators with flatter boundaries near touching points.
文摘Many contemporary Islamic terrorist groups have been identified as forms of religious fundamentalism.Moreover,the narratives and representations constructed by many of these groups contain traces of religious fundamentalism.In this article,ETIM/TIP’s narratives and representations are examined as a case study.The group’s power discourses as they relate to religious fundamentalism are analyzed through examining the group’s rhetoric of its own origin,its current situation,and its reactions toward this situation.The power discourse of an unconventional“Orientalism”and the use of behaviorist logic are especially emphasized.Furthermore,the presence of behaviorism in religious fundamentalist narratives suggests the need for China to revise its official national counterterrorist discourse.Instead of continuing the current behaviorist rhetoric in the legal framework,this article suggests a deconstruction-ultimately,a discouragement-of religious behaviorism to prevent the radicalization of Muslims in the country.
