During the process of statistical change detection, because t distribution is used to eliminate the effect of noise, the noise variance is not needed.
在該方法中,由于統(tǒng)計(jì)變化檢測技術(shù)是利用t分布來有效消除噪聲的影響,而不需要估計(jì)噪聲的方差,而且可利用間隔為k的兩幀圖像代替連續(xù)兩幀來進(jìn)行變化檢測,因此可以很好地處理關(guān)節(jié)運(yùn)動和慢運(yùn)動;另外,對兩個連續(xù)的統(tǒng)計(jì)變化檢測結(jié)果取交集還可以消除暴露背景的影響,并能消除大部分的殘留噪聲,且?guī)缀醪辉黾佑?jì)算量,因此統(tǒng)計(jì)變化檢測可作為視頻對象分割的基礎(chǔ),試驗(yàn)結(jié)果表明,該方法不僅解決了傳統(tǒng)的變化檢測過程中的噪聲、復(fù)雜運(yùn)動以及暴露背景影響,而且能夠自動實(shí)時地分割視頻對象,以滿足MPEG-4等基于對象的視頻應(yīng)用。
Under t distribution,it finds out the first-order and second order derivatine of the VaR in both long and short cases.
在t分布下,分別導(dǎo)出空頭和多頭套期保值風(fēng)險價值關(guān)于期貨量的一階、二階變化率,并解釋其經(jīng)濟(jì)意義,這樣就為套期者根據(jù)套期保值風(fēng)險價值的敏感程度增減期貨量提供指導(dǎo)。
Thus, we use t distribution that can reflect the characteristics of high-peaked and heavy-tailed to fit real data, and we obtain the.
從而用能反映尖峰厚尾特征的t分布進(jìn)行擬合,得出上證綜合指數(shù)收益率符合t3分布。
Asymptotic Distribution of Matrix t-distribution;
矩陣t－分布的漸近分布
This paper gives an approximate expression for the t-distribution on upper percentile:t α(n)≈JB(SX((4n-1) 2-25.
本文給出 t-分布上側(cè)分位數(shù)的近似表示式tα( n)≈ ( 4 n -1 ) 2-2 5 。
New calculation and application of statistics t-distribution;
統(tǒng)計(jì)t分布的新計(jì)算與應(yīng)用
After the review of the synthetic aperture radar(SAR) speckle filters,this paper introduces a flexible adaptive SAR filter which is based on the T-distribution and analysis of its algorithm and characters.
在對合成孔徑雷達(dá)(synthetic aperture radar,SAR)濾波器的研究狀況進(jìn)行回顧的基礎(chǔ)上,介紹了基于T分布的可調(diào)節(jié)斑點(diǎn)噪聲濾波器的算法和特點(diǎn),通過目視比較和定量分析,將該濾波器與Lee,Frost,Lee-Sigma,Gamma-MAP等濾波器進(jìn)行了比較,結(jié)果表明該濾波器在斑點(diǎn)濾除和細(xì)節(jié)保留方面均取得了很好的效果。
Then,a t-distribution significance test was performed on the N temporal.
先選取包括當(dāng)前幀在內(nèi)的前連續(xù)2N幀圖像,將奇數(shù)幀與偶數(shù)幀圖像作差值,形成長度為N的幀差圖像序列;對每個象素點(diǎn)時域上的N個幀差樣本值進(jìn)行t分布顯著性檢驗(yàn),判斷象素點(diǎn)是否發(fā)生了變化;對得到的二值圖像進(jìn)行形態(tài)學(xué)處理,得到完整的分割結(jié)果。
Tables for statistical distributions--t-distribution
GB/t4086.3-1983統(tǒng)計(jì)分布數(shù)值表t分布
The tables of quantites of the non-central t-distribution
GB/t15932-1995非中心t分布分位數(shù)表
New Multivariate Skew t Distributions Generated from Skew Pearson VII Distributions
從偏態(tài)Pearson VII分布生成的新的多元偏態(tài)t分布
Calculation of Dynamic VaR Based on the Skew Student-t Distribution of FIGARCH Model
偏態(tài)t分布下FIGARCH模型的動態(tài)VaR計(jì)算
In general, the t distribution is flatter than the normal distribution, and there is a different t distribution for every possible sample size.
一般地說，t分布比正常分布更平坦一些，對于不同的樣本容易都有一個不同的相應(yīng)t分布。
Factors Analysis on Shibor Overnight Offer Interest Rate Based on Skewed-t Distribution;
基于偏t分布的Shibor隔夜拆借利率影響因素分析
The Sensitivity Analysis on the Value at Risk in Futures Hedging under t Distribution;
t分布下期貨套期保值VaR風(fēng)險的敏感度分析
Tail Property of the Multivariate T-Distributions and the Application in Stock Market;
多元t分布的尾部性質(zhì)及其在股票市場的應(yīng)用
The Sytdy to Stress Regularities of Distribution of RPC Prestressed T-girder Upper Plate;
RPC預(yù)應(yīng)力T梁頂板應(yīng)力分布規(guī)律研究
CD62L and CD8 in the Distribution of Adenoids' T Cells
CD62L和CD8+在腺樣體T細(xì)胞中的分布
The Distribution of an Avirulencegene AVRPiz-t in the Field
無毒基因AVRPiz-t的田間分布
Research on Features of Transverse Distribution of T-Beam with Mid-Minor Span,20 m Long
20m中小跨徑T梁橫向分布特點(diǎn)研究
Pattern Distributions of Sequences Based on Single-Cycle T-Function
基于單圈T-函數(shù)序列的pattern分布
The Optimum Policy T~* and Recursion Solution of the Queue-length Distribution in M/G/1 Queue System with Generalized (t,T) Policy
推廣的(t,T)策略下M/G/1排隊(duì)系統(tǒng)隊(duì)長分布的遞推解及最優(yōu)策略
VaR Model of Interest Rate Risk upon Foreign Debt Based on T-distribution;
基于t-分布下外債利率風(fēng)險的VaR度量模型
The Reliable Probability for the Independent Identical Distribution R-S(t) Series and Parallel System;
獨(dú)立同分布R-S(t)串并聯(lián)系統(tǒng)的結(jié)構(gòu)可靠度
T beam horizontal laying calculation method based upon rigidness correction
基于剛度修正的T梁橫向分布計(jì)算方法
Large Sample Size Property of the Root of Log Likelihood Equation for T Distribution
T分布族對數(shù)似然方程根的大樣本性質(zhì)