提出了一种多脉冲宽带相关声成像的逐点聚焦算法。
An improved point-by-point focusing arithmetic of Multi-pulse Wide Band Correlation(WBC) imaging is presented.
本文介绍了光斑图像处理的方法及常用聚焦算法的原理。
How to process image and the widely-used principle of various focus arithmetic is discussed.
图像自动聚焦算法聚焦值的选择是数字相机自动聚焦系统的关键问题。
The choice of auto focus value for an image is the key factor to auto focus system of digital camera.
本文将对比度最优自聚焦算法等效为一个求解局部最优解的优化模型。
The contrast optimization algorithm is described as an optimization model via which the local optimal solution can be achieved.
目的为了选用快速高效的自聚焦算法对机载SAR数据进行聚焦处理。
Aim to optimize an effective autofocus algorithm for processing of airborne SAR images.
自动聚焦算法包括三个模块：聚焦区域选择、聚焦评价函数和极点搜索算法。
Autofocus algorithm consists of three modules: focus region selection, focus measurement function and peak searching algorithm.
本文主要研究了合成孔径雷达成像算法和雷达成像自聚焦算法两个方面的内容。
Synthetic aperture radar imaging algorithm and radar imaging autofocus algorithm are mainly discussed in this thesis.
对自动聚焦问题，分析了焦距变化的原因，给出了计算机控制的自动聚焦算法。
After analyzing why the focal length changes, I give an automatic focus algorithm controlled by computer.
以对比度作为衡量图像聚焦程度的标准，研究了一种新颖的SAR图像自聚焦算法。
Considering the image contrast as a measurement of the degree of the image focus, a novel autofocus algorithm for Synthetic Aperture Radar (SAR) imagery is presented in this paper.
在传统图像灰度方差评价函数的基础上，利用小波多分辨率分析，提出了一种新的自动聚焦算法。
On the basis of evaluation function of using image intensity variance, we proposed a new auto-focusing algorithm by means of Wavelet Transform Multi-Resolution Analysis(WTMRA) theory.
同相位梯度自聚焦算法相比，最小熵算法无需在图像域分离出强点目标，因而特别适用于无任何明显特征的图像。
Compared with the PGA autofocus algorithm, the minimum entropy algorithm needs not isolate prominent point target in image domain and is especially suitable for the images without specific ch...
最后，结合FSA成像算法和IROPE自聚焦算法，以机载SAR实际飞行数据为基础，对算法的可行性和有效性进行验证。
At last, combining FSA and IROPE algorithms, using air-borne SAR actual flight data, the algorithms' feasibility and validity are validated.
论文第二章详细分析了各种相位误差的来源及它们对图像产生的影响，对几种现有的自聚焦算法进行了描述，指出实际应用过程中应该注意的问题。
Chapter 2 introduces the sources and influences on images of all kinds of phase errors, analyzes existing some autofocusing algorithms and lays stress on considerations for application.
该算法可推广应用到任何聚焦测井方法中。
多聚焦图像的融合实验结果说明该算法有很好的推广适用性。
The result of the fusion experiment of multi-focus images indicates that the algorithm is good to spread.
为了提高DVD聚焦伺服系统的控制精度和响应速度需要加入控制器，提出了一种新的校正算法。
We need to add the controller in order to enhance the control precision and response speed of DVD focus servo system, and then a new emendation arithmetic was put forward.
多聚焦图像融合的算法较多，主要由基于空间域和基于频率域的图像融合法组成。
There are many multi-focus image fusion algorithms, mainly consisted of the spatial area based and the frequency area based algorithms.
为了获得同一场景内所有物体都清晰的图像，提出一种新的多聚焦图像融合算法。
In order to get a clear image that contains all relevant objects in an area, this paper proposes a new multi-focus image fusion algorithm.
本文提出了一种考虑人眼视觉系统特性的多聚焦图像融合算法。
In this paper, a multi focus image fusion algorithm is proposed which takes features of human vision system (HVS) into account.
一个完善的自动聚焦系统软件应包含聚焦评价算法、聚焦区域选择算法以及聚焦搜索算法。
A perfect auto-focus system software should include focused evaluation algorithms, focused region selection algorithm and auto-focus search algorithm.
文中详细讨论了多元线性阵列探测器系统的组成和实现方法以及实验装置的组成，相控聚焦的成像算法在多元线性阵列探测器中的应用。
A makeup of the multi-element linear transducer array system and Experimental setup were described in detail, besides the application of phase-controlled algorithm in multi-element transducer array.
同时利用窄带传播算子方法替代MUSIC算法，进一步减少了聚焦后测向的计算量。
At the same time, the MUSIC algorithm is replaced by the propagator method, which can reduce computational burden further.
在现有的相位补偿方法中，相位梯度自聚焦（PGA）算法是较好的一种。
Of the existing phase compensation methods, the phase gradient autofocus (PGA) algorithm is a better one.
基于小波变换的并以效果评价为反馈的图像融合算法，将其用于多聚焦图像融合中，能够一次就得到各个目标都比较清晰的融合图像。
An image fusion algorithm using transform and taking the evaluation of effect as feedback, using the algorithm in multi-focus image fusion, can get a fused image that all targets are more clearer.
理、成像演算法、自聚焦运动补偿技术与合成孔径测深的模拟和实验结果。
Simulation and experiment on basic principle, imaging algorithms, auto - focusing techniques and bathymetry are given in chapter five.
反射率偏移法（RDM）是合成孔径雷达（SAR）自聚焦的经典算法，当场景对比度较低时，RDM自聚焦效果变差。
Reflectivity Displacement Method (RDM) is a classical algorithm of Synthetic Aperture Radar (SAR) autofocus processing, whose performance degenerates with low contrast of the scene.
将该算法应用于实测数据的ISAR成像中，得到了较好的聚焦结果。
The imaging results based on the measured ISAR data demonstrate a good performance of the autofocus algorithm.
论文的附录对相位梯度自聚焦的两种算法进行了较详细的推导。
In the appendix, two kind of PGA algorithms are obtained in details.
论文的附录对相位梯度自聚焦的两种算法进行了较详细的推导。
In the appendix, two kind of PGA algorithms are obtained in details.
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