temporal filter

Based on the features of motional image processing, a method of temporal recursive lowpassed filter based on Kalman filter theory was adopted to subtract and update the background.

结合了运动图像处理的特点，选用了一种基于Kalman滤波理论的时域递归低通滤波来进行背景提取和背景更新。

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During contour evolution, the particle filter ( PF) is used to track the feature points by enforcing spatio temporal local constraints to handle the observation noise.

为避免观测噪声的影响，增加轮廓的时空局部约束并利用粒子滤波（PF）技术解决该类跟踪问题是非常有效的。

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Power Control Algorithm and Simulation of Optimization Temporal and Spatial Filter

最优时空滤波器功率控制算法及仿真

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First, select the appropriate bandpass threshold to image spatial filter, then to frame relation temporal filter.

首先根据图像的信噪比选取合适的带通门限进行图像空间滤波，然后采用帧相关法进行时间滤波。

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The visual neural mechanism and frequency characteristic of the temporal high pass filter nonuniformity correction technique for infrared focal plane array were studied.

分析基于时域高通滤波的红外焦平面自适应非均匀校正算法的视觉神经机制以及滤波器的幅频特性。

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At last, the multi-scale bilateral filter based on temporal high-pass filter algorithm is presented, this algorithm is based on pyramid decomposition and use different time constant for nonuniformity cumulative in different scales.

最后提出了一种双边多尺度时域高通滤波法，该算法在金字塔分解的基础上，结合了时域高通滤波器和双边滤波器，在不同尺度上采用不同的时间常数来进行非均匀性的累积。

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Independent Component Analysis and temporal filter are employed for artifacts removal and noise reduction.

一套结合了独立分量分析和时间滤波器的预处理过程被用来去除伪迹和噪声降低。

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Our rate-distortion optimization ( RDO) wavelet packet video coder, which codes the temporal subbands output from a motion-compensated temporal filter ( MCTF), can determine optimal rate allocations in one GOP for a given coding bit budget.

所实现的率失真优化的小波包编码器对运动补偿时域滤波产生的时域子带进行编码，根据每个帧组给定的比特限制决定最优的码率分配方案。

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It combines the motion compensation technique with a directional based spatio temporal filter, and the interpolation result is the weighted sum of the two methods.

将运动补偿技术与基于方向的时空滤波方法相结合，去隔行插值结果是运动补偿时间插值和基于方向的时空中值滤波方法的加权和。

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According to the characteristics of digital video that there exist strong correlations between frames, we introduced inter-frame filter methods, including temporal average filter and adaptive recursive filter.

由于帧间滤波方法（也叫做时空滤波器）考虑了视频图像帧间相关性强的特点，因此具有更好的去噪效果，论文主要研究了时域平均滤波方法和自适应递归滤波方法。

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After the inverse wavelet transform, temporal filter was applied video to enhance the denoising effect further.

小波逆变换后, 利用时间域滤波方法进一步提高降噪效果.

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And a nonparametric temporal filter and a LS adaptive filter were applied for suppressing clutter respectively, thus the raw images were transformed into quasi SPGWN model.

分别对其采用非参数时域滤波和LS自适应滤波进行去除，从而将原始数据转化为准SPGWN模型。

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To improve the performance of 3-D wavelet video codec, a new temporal wavelet filter based on motion compensated and lifting scheme is proposed in this thesis.

现有的三维小波视频编码器的主要弱点是在时间方向的滤波效果不理想，本文对此提出了一种新的改进方案。

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The optimization temporal and spatial filter and principle of pow-er control are introduced, and simulating of power control algorithm is made by illustration.

介绍了最优时空滤波及功率控制原理，通过实例对功率控制算法进行仿真。

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Temporal recursive max filter ( RMF) is a point target detection algorithm that is easy to realize but has a shortcoming of target dilation in the filtering process.

时域递归最大值滤波是一种较易实现的红外小目标检测方法，但是在递归过程中存在目标膨胀的缺陷，影响了该方法的应用。

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Experiments show motion estimation accuracy can be obtained in proposed system, the appropriate selection of temporal filter and optimization of update operation in lifting, bring about improvement of video coding efficiency and scalability.

实验结果显示，在保证运动估计精度下，合理选择时间滤波器，结合改善的提升实现中的更新操作，提高了编码系统的编码效率和可扩展性能。

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Experimental results show that temporal high-pass filter algorithm corrects the non-uniformity of infrared focal plane arrays to achieve the desired objective, but the accumulation frame number needs set correctly.

实验结果表明，时域高通滤波算法尽可能的校正了红外焦平面阵列表现为低频的非均匀性，达到了预期的校正目的，但积累的帧数需要设置。

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For the degradation of image sequence due to noise, the temporal noise filter is designed during video image acquisition process.

在视频图像获取过程中，由于噪声对图像序列的降质，需要设计实时噪声滤波器。

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Calculate the different value of illumination change during motion estimation and finished illumination compensation during motion compensated temporal filter.

在运动估计时，计算亮度变化差值。在运动补偿时域滤波时，对亮度差值进行补偿。

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Motion vectors are dealt with temporal average filter and a spatially weighted vector median filter.

同时对运动矢量在时域上进行平均，在空域上进行带权矢量中值滤波处理。

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After the inverse wavelet transform, temporal filter was applied on the filtered video to enhance the denoising effect further.

小波逆变换后，利用时间域滤波方法进一步提高降噪效果。

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In theory, a temporal recursive low pass filter model is developed and used to update the background dynamically based on multi-frames moving weighted averaging and motion detecting. Actually, several proposals lie in the derivation of the parameter k in the model.

采用了多帧运动加权平均理论及运动检测理论建立了时域递归低通滤波算法模型，并将该模型应用于缓慢变化的背景预测。

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