Sidelobe artifacts are a common problem in image reconstruction from finite-extent Fourier data obtained by microwave imaging system.In order to enhance the image quality,sidelobe reduction must be im
This paper gives the definition of the high-dimensional cross product and its calculation by extending the 3-D cross product definition into the high-dimensional vector space.Based on the properties o
A new separation algorithm based on contour segments and ellipse fitting is proposed to separate the ellipse-like touching grain kernels in digital images.The image is filtered and converted into a bi
针对CO2阶跃变化下茄子光合的振荡动态现象,采用CO2阶跃起点(Ca1)和阶点(Ca2)处理,以及不同光照水平(PAR)下的CO2阶跃处理,结合光合系统反馈控制动态生化模型中传递函数的振荡单元,分析了茄子动态光合的振荡特征参数。通过稳态光合参数,将茄子光合速率(Pn)转化为羧化速率(Vc)的动态进程,发现在较低的CO2阶跃起点(Ca1≤180μmol/L)下,光合系统的时间常数T较大,光合系统的阻
Traditional cartoons have been widely used in entertainment,education,and advertisement.Thus,a large amount of cartoon data is available.In this paper,we propose a new technique for capturing the moti
To provide pest technicians with a convenient way to recognize insects,a novel method is proposed to classify insect images by integrated region matching (IRM) and dual tree complex wavelet transform
The Songliao Basin is the largest oil-bearing basin in China.In the absence of sufficient evidence,the possibility of seawater incursion(s) into the Songliao Basin remains controversial.Recently,we di
We conducted comprehensive receiver function analyses for a large amount of high-quality broadband teleseismic waveforms data recorded at 19 China National Digital Seismic Network (CNDSN) stations dep
Northeast China is a unique place to study intra-plate volcanism.We analyzed P-wave receiver function data recorded by 111 permanent broadband seismic stations in Northeast China.The results show that
We resolve a large (～20 km) discrepancy in Moho depth determined from PdS receiver functions (RFs) and from active source seismic profiling in the complex Caribbean-South American plate boundary zone