该类方法主要指的是活动轮廓模型（active contour model）以及在其基础上发展出来的算法，其基本思想是使用连续曲线来表达目标边缘，并定义一个能量泛函使得其自变量包括边缘曲线，因此分割过程就转变为求解能量泛函的最小值的过程，一般可通过求解函数对应的欧拉(Euler．Lagrange)方程来实现，能量达到最小时的曲线位置就是目标的轮廓所在。
标签： 图像处理
上传时间： 2016-03-07
上传用户：2009dd
LINQ to SQL和Entity Framework都是一种包含LINQ功能的对象关系映射技术。他们之间的本质区别在于EF对数据库架构和我们查询的类型实行了更好的解耦。使用EF，我们查询的对象不再是完全对应数据库架构的C#类，而是更高层的抽象：Entity Data Model。这为我们提供了额外的灵活性，但是在性能和简单性上面也会有所损失。
标签： NQ to SQL和Entity Framework都是一种包含LINQ功能的对象关系映射技术。他们之间的本质区别在于EF对数据库架构和我们查询的类型实行了更好的解耦。
上传时间： 2016-03-29
上传用户：谢谢谢谢
We show in the context of a new economic geography model that when labor is heterogenous trade liberalization may lead to industrial agglomeration and inter-regional trade. Labor heterogeneity gives local monopoly power to firms but also introduces variations in the quality of the job match. Matches are likely to be better when there are more firms and workers in the local market, giving rise to an agglomeration force which can offset the forces against, trade costs and the erosion of monopoly power. We derive analytically a robust agglomeration equilibrium and illustrate its properties with numerical simulations
标签： 经济、城市化和经济增长
上传时间： 2016-04-02
上传用户：kinda233
Color appearance models aim to extend basic colorimetry to the level of specifying the perceived color of stimuli in a wide variety of viewing conditions
标签： appearance Color model
上传时间： 2016-05-21
上传用户：wisewater
Providing the MATAB model for optics, a famous book
标签： engieering MATLAB Optics used on
上传时间： 2016-05-27
上传用户：JOHNBW1156
Computation of loudness (Zwicker model) according to ISO 532B / DIN 45631 norms. This model is valid for steady sounds. Code based on BASIC program published in the following article: Program for calculating loudness according to DIN 45 631 (ISO 532B)", E.Zwicker and H.Fastl, J.A.S.J (E) 12, 1 (1991).
上传时间： 2016-11-14
上传用户：zztony16
Talbe of contents: 1、the e4 application model 2、implement views 3、extending the application model 4、dependency injiection basic 5、behavior annotations 6、services 7、eclipse 3.x vs eclipse 4.- which platform to use? 8、soft migration from 3.x to eclipse 4(e4)
上传时间： 2017-04-26
上传用户：xiefy
Improved guaranteed cost control and quantum adaptive control are developed in this study for a quadrotor helicopter with state delay and actuator faults. Improved guaranteed cost control is designed to eliminate disturbance effects and guarantee the robust stability of a quadrotor helicopter with state delay. The inapplicability of guaranteed cost control to the quadrotor linear model is addressed by combining guaranteed cost control with a model reference linear quadratic regulator. In the event of actuator faults, quadrotor tracking performance is maintained through quantum adaptive control. Finally, the availability of the proposed scheme is verified through numerical simulation
标签： Control Helicopter Guaranteed Quadrotor Adaptive Strategy Improved Quantum Delay State
上传时间： 2017-07-15
上传用户：bingzi_ml
MATLAB官方教材，关于模型设计和模型仿真
标签： Managing MATLAB Design Based Model
上传时间： 2017-08-13
上传用户：HUSTomato
The 4.0 kbit/s speech codec described in this paper is based on a Frequency Domain Interpolative (FDI) coding technique, which belongs to the class of prototype waveform Interpolation (PWI) coding techniques. The codec also has an integrated voice activity detector (VAD) and a noise reduction capability. The input signal is subjected to LPC analysis and the prediction residual is separated into a slowly evolving waveform (SEW) and a rapidly evolving waveform (REW) components. The SEW magnitude component is quantized using a hierarchical predictive vector quantization approach. The REW magnitude is quantized using a gain and a sub-band based shape. SEW and REW phases are derived at the decoder using a phase model, based on a transmitted measure of voice periodicity. The spectral (LSP) parameters are quantized using a combination of scalar and vector quantizers. The 4.0 kbits/s coder has an algorithmic delay of 60 ms and an estimated floating point complexity of 21.5 MIPS. The performance of this coder has been evaluated using in-house MOS tests under various conditions such as background noise. channel errors, self-tandem. and DTX mode of operation, and has been shown to be statistically equivalent to ITU-T (3.729 8 kbps codec across all conditions tested.
标签： frequency-domain interpolation performance Design kbit_s speech coder based and of
上传时间： 2018-04-08
上传用户：kilohorse
