Description: 对原图像叠加椒盐噪声和通过高通滤波器处理，观察其效果，并将图像还原-Image superimposed on the original salt and pepper noise and high-pass filter, through treatment, to observe its performance and image restoration Platform: |
Size: 1024 |
Author:张洋 |
Hits:
Description: 我们知道，图像压缩就是要寻找高压缩比、并使压缩后的图像有合适的信噪比的方法，对压缩后的图像还要能实现低失真度地恢复图像。压缩性能的评价标准之一是图像能量损失和零系数成分值。能量损失越小，零系数成分值越大，图像压缩的性能就越高。
-We know that image compression is to find a high compression ratio, and the compressed image signal to noise ratio suitable method for compressed images also can realize low-distortion image restoration. Compression performance evaluation criteria is one of image and zero energy loss coefficient of component values. The smaller the energy loss, the greater the value of a zero coefficient components, image compression the higher the performance. Platform: |
Size: 5120 |
Author:梁明 |
Hits:
Description: 摘要:为了提高图像复原算法的性能 ,提出了一种改进的奇异值分解法估计图像的点扩散函数。从图像的退化离散模型
出发 ,对图像进行逐层分块奇异值分解 ,并自动选取奇异值重组阶数以减少噪声对估计的影响。利用理想图像奇异值向
量平均能谱指数模型 ,估计点扩散函数奇异值向量的频谱 ,再反傅里叶变换得到其时域结果。实验结果表明 ,该方法能
在不同信噪比情况下估计成像系统的点扩散函数 ,估计结果比原有估计方法有所提高 ,有望为图像复原算法的预处理提
供一种有效的手段。-Abstract : To improve the performance of image restoration algorithms , a modified Singular Value De2
[ ] [ ]
composition SVD method was proposed to estimate the Point Spread Function PSF of an imaging
system. Using the discrete image degradation model , a block2based SVD filter scheme was applied for
the image denoising with an automatically determined singular value rank. After the spectra of PSF
singular vectors were estimated under an exponential model for the averaged spectra of un2degraded
image singular vectors , the IFFT was used to get the time2domain estimation of the PSF. The experi2
mental results show that this proposed method can be applied to estimate the PSF of the imaging sys2
tem under a wide SNR range and its performance is better than the original method. It may be used as
an effective method for the image preprocessing in image restoration problems.
[ ]
Key words: image restoration Point Spread Function PSF block2based Singular Value Decomposi2 Platform: |
Size: 476160 |
Author:zy |
Hits:
Description: 一种使用牛顿迭代的超分辨算法，该算法以2的对数提高传统Landweber算法的运算速度，附带文章。-The problem of poor resolution of acquired image in the passive millimeter wave imaging stems mainly from antenna size limitations, thus necessitating efficient post-processing to achieve resolution improvements. A novel image super-resolution algorithm, Regularized-Newton-Residual (RNR) algorithm, is proposed for Passive Millimeter wave imaging (PMMW). First Newton inversion algorithm is introduced into the field of image restoration. The iterative scheme of Newton algorithm is deduced based on normal equation. Then, residual method is employed to achieve better performance and implement spectrum extrapolation. Experimental results demonstrate the algorithm is insensitive to noise distribution. Furthermore it has high super-resolution rate and fast convergence speed. Platform: |
Size: 6144 |
Author:姜正茂 |
Hits:
Description: 一种基于骨架的水泵性能曲线复原方法---:考虑到编制水泵装置选型及优化方面软件须将大量复杂的水泵综合性能曲线图片数字化后输入计算机，提出了"扫描一细化一取样一拟合"的复原方法，较好地解决了扫描图片线条较粗影响精度、人工取样费时费力的问题.该方法在"水泵优化与选型"软件中得到成功应用.-Based on pump performance curve skeleton--- restoration method: taking into account the selection and preparation of pump system optimization software required to a large number of complex Pump Performance Curve image digitized into the computer, put forward " a detailed scan of a sample of a fit " of the restoration method, can solve the impact of the scanning image line coarse accuracy, time-consuming manual sampling effort problem. The method of" Pump Selection and Optimization " software has been successfully applied. Platform: |
Size: 219136 |
Author:mary |
Hits:
Description: 随着多媒体技术的不断运用，图像压缩要求更高的性能和新的特征。为了满足静止图像在特殊领域编码的需求，JPEG2000作为一个新的标准处于不断的发展中。它不仅希望提供优于现行标准的失真率和个人图像压缩性能，而且还可以提供一些现行标准不能有效地实现甚至在很多情况下完全无法实现的功能和特性。这种新的标准更加注重图像的可伸缩表述。所以就可以在任意给定的分辨率级别上来提供一个低质量的图像恢复，或者在要求的分辨率和信噪比的情况下提取图像的部分区域。
-With the constant use of multimedia technology, image compression demand higher performance and new features. In order to meet the still images in a particular area code needs, JPEG2000 as a new standard in the process of development. It not only wants to offer better than the current standard of distortion of the rate and the personal image compression performance, and can also provide some current standards can t effectively even in many cases completely unable to realize functions and characteristics. The new standard pay more attention to the image, scalable expression. So we can in any given level of resolution up to provide a low quality image restoration, or in the resolution of the requirements and signal-to-noise ratio of portions of the image extraction. Platform: |
Size: 1417216 |
Author:yan |
Hits:
Description: ：针对TV模型修复算法只沿梯度垂直方向扩散，容易在平滑区域引入阶梯效应，迭代效率低，易产生假边缘的缺点，分析比较了TV图像修复模型的性能，提出了一种改进的图像修复算法。-Abstract：TV image inpainting only repairs algorithm along the vertical direction，making diffusion gradi—
ent in smooth area into stair step effect，reducing iterative efficiency，producing false edge faults．We ana—
lyse and compare the TV image restoration model and repair the performance of the model is put forward
in this paper．Puts forward an improved image restoration algorithm Platform: |
Size: 1189888 |
Author:Ankiss |
Hits:
Description: 分析了在核磁共振图像恢复中任意K-空间采样敏感度编码的提升。分析了非笛卡尔梯度SENSE算法在平行图像中中表现。-Enhance the analysis of an arbitrary K-space sampling sensitivity encoding in magnetic resonance image restoration. Analysis of non-Cartesian SENSE gradient algorithm performance in parallel to the image. Platform: |
Size: 4096 |
Author:任甜甜 |
Hits:
Description: Bayesian Deblurring with Integrated Noise Estimation-Bayesian Deblurring with Integrated Noise Estimation
Conventional non-blind image deblurring algorithms
involve natural image priors and maximum a-posteriori
(MAP) estimation. As a consequence of MAP estimation,
separate pre-processing steps such as noise estimation and
training of the regularization parameter are necessary to
avoid user interaction. Moreover, MAP estimates involving
standard natural image priors have been found lacking in
terms of restoration performance. To address these issues
we introduce an integrated Bayesian framework that unifies
non-blind deblurring and noise estimation, thus freeing the
user of tediously pre-determining a noise level. A samplingbased
technique allows to integrate out the unknown noise
level and to perform deblurring using the Bayesian minimum
mean squared error estimate (MMSE), which requires
no regularization parameter and yields higher performance
than MAP estimates when combined with a learned highorder
image prior. A quan Platform: |
Size: 904192 |
Author:孙文义 |
Hits:
Description: 本程序的性能已经达到较高水平，matlab程序运行时导入数据文件作为输入参数，包括压缩比、运行时间和计算复原图像的峰值信噪比。- The performance of the program has reached a high level, Import data files as input parameters matlab program is running, Including compression ratio, image restoration computing uptime and peak signal to noise ratio. Platform: |
Size: 5120 |
Author:nou |
Hits:
Description: 相参脉冲串复调制信号，包括压缩比、运行时间和计算复原图像的峰值信噪比,本程序的性能已经超过其他算法。- Complex modulation coherent pulse train signal, Including compression ratio, image restoration computing uptime and peak signal to noise ratio, This program has exceeded the performance of other algorithms. Platform: |
Size: 5120 |
Author:丁雄建 |
Hits:
Description: 部分实现了追踪测速迭代松弛算法，包括压缩比、运行时间和计算复原图像的峰值信噪比,本程序的性能已经超过其他算法。- Partially achieved tracking speed iterative relaxation algorithm, Including compression ratio, image restoration computing uptime and peak signal to noise ratio, This program has exceeded the performance of other algorithms. Platform: |
Size: 6144 |
Author:btcqj |
Hits:
Description: 鲁棒性好，性能优越，本科毕设要求参见标准测试模型，包括压缩比、运行时间和计算复原图像的峰值信噪比。- Robustness, superior performance, Undergraduate complete set requirements refer to the standard test models, Including compression ratio, image restoration computing uptime and peak signal to noise ratio. Platform: |
Size: 6144 |
Author:guitankinggao |
Hits:
Description: 包括压缩比、运行时间和计算复原图像的峰值信噪比,有井曲线作为输入可计算其地震波的衰减,光纤无线通信系统中传输性能的研究。- Including compression ratio, image restoration computing uptime and peak signal to noise ratio, There is a well attenuation curve as input to calculate its seismic waves, Fiber Transmission wireless communication system performance. Platform: |
Size: 5120 |
Author:pingbaohang |
Hits:
Description: 基于Curvelet变换的样本块图像修复算法提高现有样本块修复算法性能。首先利用Curvelet 变换估计待修复图像的4方向特征．然后利用颜色信息与方向信息共同衡量样本块间的相似度，在此基础上构造颜色-方向结构稀疏度函数．-Based on the sample block transform image restoration algorithm Curvelet enhance existing sample block repair algorithm performance. Firstly Curvelet transform estimated to be repaired 4 directional characteristics of the image. Then use the color information and direction information together measure the similarity between the sample block, constructed on the basis of color- direction sparsity structure function. Platform: |
Size: 506880 |
Author:黄旭东 |
Hits:
Description: 均值便宜跟踪的示例，包括压缩比、运行时间和计算复原图像的峰值信噪比,鲁棒性好，性能优越。- Example tracking mean cheap, Including compression ratio, image restoration computing uptime and peak signal to noise ratio, Robustness, superior performance. Platform: |
Size: 5120 |
Author:fanyiuyangsao |
Hits:
Description: 包括压缩比、运行时间和计算复原图像的峰值信噪比,是国外的成品模型，光纤无线通信系统中传输性能的研究。- Including compression ratio, image restoration computing uptime and peak signal to noise ratio, Foreign model is finished, Fiber Transmission wireless communication system performance. Platform: |
Size: 5120 |
Author:白文谦 |
Hits:
Description: Including compression ratio, image restoration computing uptime and peak signal to noise ratio, Sampling from a priori probability, calculate the weight, The performance of the program has reached a high level. Platform: |
Size: 59392 |
Author:huibuigaopun
|
Hits:
Description: To achieve the recognition of 10 digital sound, Robustness, superior performance, Including compression ratio, image restoration computing uptime and peak signal to noise ratio. Platform: |
Size: 57344 |
Author:郭建录
|
Hits:
Description: 盲去卷积复原算法，并在MATLAB中进行实验，和维纳滤波的复原效果进行一个对比。盲去卷积的方法有多种，露西-理查德森算法属于图像复原中的非线性算法，与维纳滤波这种较为直接的算法不同，该算法使用非线性迭代技术，在计算量、性能方面都有了一定提升(The blind deconvolution restoration algorithm is carried out in MATLAB and is compared with the restoration effect of Wiener filtering. There are many ways of blind deconvolution. Lucy Richardson algorithm is a nonlinear algorithm in image restoration. Unlike Wiener filtering, this algorithm uses nonlinear iteration technology, and has a certain improvement in computation and performance.) Platform: |
Size: 5120 |
Author:岛屿12 |
Hits:
Search - image restoration performance