Description: fbp算法实现CT重建，包括不同投影个数、探测器个数和噪声对重建后图像的质量的影响。-FBP CT reconstruction algorithm, including the number of different projection, and the number of detector noise on the reconstructed image quality. Platform: |
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Author: |
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Description: 本算法用来求取指纹图像的质量，也可用于其他的图像处理上，通过指纹的干湿、有效面积等来判断质量-The algorithm used to strike a fingerprint image quality, can also be used for other image processing through the wet and dry fingerprints, such as the effective area to determine the quality of Platform: |
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Author:刘振兴 |
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Description: 介绍并实现了一套完整的指纹图像预处理方法,通过剩余块处理和平滑方法改进了传统
的指纹图像分割算法 使用方向匹配的方法对指纹图像方向块进行方向滤波完成图像增强 并除去细化后存在的短线和毛刺。该算法对Secugen指纹仪采集的图像和FVC2004数据库中的指纹图像进行实验,结果表明经过预处理后的指纹图像质量得到明显增强,方便进行细节特征提取。-Introduction and realize a complete set of fingerprint image pre-processing methods, and treatment through the remaining block smoothing method to improve the traditional fingerprint image segmentation algorithm using the direction of matching the method of fingerprint image filtering direction the direction of block completion of image enhancement and refinement to remove after the the existence of short-term and burr. The algorithm for fingerprint Secugen Miriam Collection FVC2004 images and fingerprint images in the database to conduct experiments, results showed that after pretreatment of the fingerprint image quality has been markedly enhanced, to facilitate the details of feature extraction. Platform: |
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Author:张杰 |
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Description: 该程序SSIM（结构相似度）是基于matlab平台，用于图像的客观质量评价，是FR中精典算法-The program SSIM (structural similarity) is based on matlab platform for an objective image quality evaluation, is in the classical algorithm FR Platform: |
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Author:jian |
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Description: 灰度图像质量评价，以matlab为平台，介绍了几种关于灰度图像算法的质量，以数据结果来说明图像的质量。-Gray image quality evaluation, in order to matlab as a platform to introduce several gray image algorithm on the quality of data to illustrate the results of image quality. Platform: |
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Author:chrily |
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Description: 一种图像编码算法，可以对解压后的图像保持很高的清晰度和质量，速度快，效率高-An image coding algorithm can extract the image to maintain a very high clarity and quality, fast, efficient Platform: |
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Author:chendong |
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Description: This an efficient implementation of the algorithm for calculating the universal image quality index-This is an efficient implementation of the algorithm for calculating the universal image quality index Platform: |
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Author:ask |
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Description: 根据指纹的固有规律，提出了一套较完整的指纹图像预处理和特征提取算法。改进了指纹脊线频率求取算法和二值图像去孔噪声
算法，并提出了一种新的滤除指纹伪特征点的方法。通过对上百幅不同质量的指纹图像进行测试，获得了较好的效果。
关键词：指纹；预处理；特征提取-According to the inherent laws of fingerprints, a set of more complete fingerprint image pre-processing and feature extraction algorithm. To improve the frequency of the fingerprint ridge strike algorithms and binary image noise algorithm to hole, and filter out a new fingerprint method of pseudo-feature points. Increase by hundreds of different fingerprint image quality testing, to obtain good results. Key words: fingerprint pretreatment Feature Extraction Platform: |
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Author:martin |
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Description: 一種基于塊樹結構的SPIHT數字圖像壓縮算法: 在分析圖像經過小波變換后所具有的特性的基礎上,提出了一種改進的SPIHT算法.由于低頻系數占據圖像的百分之九十以上的能量,在圖像的重構中十分重要,所以,對這些系數不進行壓縮而直接傳輸 而最高頻系數相對不重要,所以不做處理,只在圖像重構時以指定的數值予以重構,因此不僅提高了圖像的質量,同時提高了圖像的壓縮率.在具體的算法中,提出了塊樹的結構,減少了算法所需的內存,拓寬了算法的應用范圍.-A tree structure based on the SPIHT block of digital image compression algorithm: After the analysis of images after the wavelet transform features, based on a modified SPIHT algorithm. Due to the low frequency coefficient images occupy more than 90 percent of energy in image reconstruction is very important, so these factors do not directly transfer compression The most high-frequency coefficient is relatively unimportant, so no treatment, only when the image reconstruction be designated numerical reconstruction therefore not only improve the image quality, while improving the image compression ratio. algorithms in specific, the proposed block-tree structure, the algorithm to reduce memory requirements and broaden the scope of application of the algorithm. Platform: |
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Author:jason.. |
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Description: 图像分割指把图像分成各具特性的区域并提取出感兴趣目标的技术和过程，它是由图像处理到图像分析的关键步骤。小麦的图像分割是使用各种图像分割算法对小麦图像进行处理和研究，提取出有用的图像信息以实现小麦粘连籽粒的分离，为进一步利用图像处理技术分析小麦品质提供依据。因此，对小麦图像分割方法的研究具有十分重要的意义。
本文首先研究了图像分割算法的分类以及常用图像分割算法的基本原理。然后针对小麦图像的特点，研究了在不同光照、背景和连接情况下使用的小麦图像分割方法，对各种分割算法进行了比较、结合和改进。重点研究了基于小波变换的分水岭算法和阈值分割算法在小麦图像分割中的应用，并借助MATLAB工具软件对选定图像进行处理，实现了对小麦粘连籽粒的分离。最后本文对图像分割技术进行了展望。
本论文的研究对于图像分割技术在小麦品质中的应用具有一定的参考价值。
-Image segmentation is a technology and process that divide image into different character area, which is interesting us. It is a key step from image processing to image analyzing. The wheat image segmentation is a way using many algorithms does some research and processing, and it also can realize the separation of wheat adhesion and realize the extraction of useful image information. So it can lay the foundation for using image processing technologies to analysis the quality of the wheat. there is a very important meaning for the research of the image segmentation method.
This paper studies the class and the principle of segmentation algorithm in common use firstly, then, studies the wheat image segment algorithm with different illumination background. It contrasts kinds of algorithms, and improved them. This paper is based on wavelet transform, and combines with the watershed algorithm and the threshold segmentation method. Using the MATLAB software, does some process on the wheat i Platform: |
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Author:qichao |
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Description: 数字影像重建在基于灰度的2D／3D医学图像配准技术中具有重要作用。它是利用基于射线追踪算法从三维数据如CT中获得二维虚拟x线图像。影像重建结果的质量直接影响到配准结果的精度。本文对数字影像重建技术作了一定的探讨，实现了对cT体数据的数字影像重建，并通过增强技术获得了突出骨组织的图像，为后续的配准研究做了很好的准备工作。-Digital image reconstruction in intensity based 2D/3D medical image registration techniques have an important role. It is the use of ray-tracing algorithm based on the data from the three-dimensional CT obtained as two-dimensional virtual x-ray images. Image reconstruction quality of the results directly affect the accuracy of registration results. In this paper, digital image reconstruction techniques were explored certain to achieve volume data on the number of cT image reconstruction, and by enhancing technology to obtain a prominent image of bone tissue, for follow-up studies with prospective done a very good preparations. Platform: |
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Author:liaozw |
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Description: BIQI（荸荠）图像质量的评测算法，不需要标准的优质图像作为参考，返回评测的指标值介于0到100之间-This is a demonstration of the Blind Image Quality Index (BIQI).
It is an implementation of the BIQI in the reference.
The algorithm is described in:
A. K. Moorthy and A. C. Bovik, "A Modular Framework for Constructing Blind
Universal Quality Indices", submitted to IEEE Signal Processing Letters (2009). Platform: |
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Author:sunteng |
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Description: This is an implementation of the algorithm for calculating the
Structural SIMilarity (SSIM) index between two images. Please refer
to the following paper:
Z. Wang, A. C. Bovik, H. R. Sheikh, and E. P. Simoncelli, "Image
quality assessment: From error visibility to structural similarity"
IEEE Transactios on Image Processing, vol. 13, no. 4, pp.600-612,
Apr. 2004. Platform: |
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Author:Annie |
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Description: 针对低可见光图像和红外图像的特点,提出一种基于DT-CWT的自适应图像融合算法.该算法具有好的平移不变性和方向选择性,更适合于人类视觉.先对源图像作双树复小波变换,充分考虑各尺度分解层的系数特征,对
低通子带引入免疫克隆选择,根据统计评价准则定义亲和度函数,自适应获得最优融合权值 对高通子带则根据人类视觉特性定义局部方向对比度,并作为融合准则,突出和增强了各源图像的对比度与细节信息.实验结果表明:
与基于小波的融合结果相比较,本文的融合算法自适应性和鲁棒性更强,较好地保护和显示了源图像中的边缘和细节信息,对比度和清晰度都有所提高.
-Aiming at the characteristics of low visible light images and infrared images, a novel adaptive image fusion
scheme based on DT-CWTwas presented. The technique has good shift-invariance and directional selectivity, and ismore
suitable for human vision. The DT-CWTwas firstly used to perform amultiresolution decomposition of source images. By
taking advantage of the characters of the coefficients, the immune clonal selection algorithm was introduced in low-pass sub-
bands and almost optimal fused weightswere obtained adaptively. To high-pass subbands, the local directive contrastwas
defined, whichwas based on human visual system. And then the contrastof fused imageswas enhanced and the detail in-
formation of source imageswas protected. The experimental results show thatour fused technique is effective and the fusedimages have a better visual quality than theirwavelet counterparts.
Platform: |
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Author:赵昭 |
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Description: 图像质量评价算法，均方差（MSE）、峰值信噪比（PSNR）、结构相似度（SSIM）、均值信噪比（WPSNR）。-Image quality assessment algorithm, the mean square error (MSE), the peak signal to noise ratio (PSNR), structural similarity (SSIM), the mean signal to noise ratio (WPSNR). Platform: |
Size: 2048 |
Author:柴江松 |
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Search - image quality algorithm