Two new species, Gypsochares bicruris sp. nov. and Gypsochares longispinus sp. nov., are described in this paper. The male genital structures of the new species are figured. A checklist of the described species in the...Two new species, Gypsochares bicruris sp. nov. and Gypsochares longispinus sp. nov., are described in this paper. The male genital structures of the new species are figured. A checklist of the described species in the world and a key to the Chinese species are given. The type specimens are deposited in the Department of Biology, Nankai University, Tianjin, China.展开更多
Inspired by eagle’s visual system,an eagle-vision-based object detection method for unmanned aerial vehicle(UAV)formation in hazy weather is proposed in this paper.To restore the hazy image,the values of atmospheric ...Inspired by eagle’s visual system,an eagle-vision-based object detection method for unmanned aerial vehicle(UAV)formation in hazy weather is proposed in this paper.To restore the hazy image,the values of atmospheric light and transmission are estimated on the basis of the signal processing mechanism of ON and OFF channels in eagle’s retina.Local features of the dehazed image are calculated according to the color antagonism mechanism and contrast sensitivity function of eagle’s visual system.A center-surround operation is performed to simulate the response of reception field.The final saliency map is generated by the Random Forest algorithm.Experimental results verify that the proposed method is capable to detect UAVs in hazy image and has superior performance over traditional methods.展开更多
文摘Two new species, Gypsochares bicruris sp. nov. and Gypsochares longispinus sp. nov., are described in this paper. The male genital structures of the new species are figured. A checklist of the described species in the world and a key to the Chinese species are given. The type specimens are deposited in the Department of Biology, Nankai University, Tianjin, China.
基金the Science and Technology Innovation 2030-Key Projects(Nos.2018AAA0102303,2018AAA0102403)the Aeronautical Science Foundation of China(No.20175851033)the National Natural Science Foundation of China(Nos.U1913602,U19B2033,91648205,61803011).
文摘Inspired by eagle’s visual system,an eagle-vision-based object detection method for unmanned aerial vehicle(UAV)formation in hazy weather is proposed in this paper.To restore the hazy image,the values of atmospheric light and transmission are estimated on the basis of the signal processing mechanism of ON and OFF channels in eagle’s retina.Local features of the dehazed image are calculated according to the color antagonism mechanism and contrast sensitivity function of eagle’s visual system.A center-surround operation is performed to simulate the response of reception field.The final saliency map is generated by the Random Forest algorithm.Experimental results verify that the proposed method is capable to detect UAVs in hazy image and has superior performance over traditional methods.
