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1. 发明授权

US06430318B1 Image processing method including spatial and temporal noise filtering steps, and medical imaging apparatus for carrying out this method 失效
标题翻译：包括空间和时间噪声滤波步骤的图像处理方法以及用于执行该方法的医学成像装置
公开(公告)号：US06430318B1
公开(公告)日：2002-08-06
申请号：US09217431
申请日：1998-12-21
申请人： Raoul Florent , Christel Soyer
发明人： Raoul Florent , Christel Soyer
IPC分类号： G01V136
CPC分类号： G06T5/20
摘要： The invention relates to an image processing method for reducing the noise in an image, including determination of three noisy temporal intensities relating to a current pixel in three successive images in a sequence, the image to be processed being the central image of the sequence. The method includes spatial and temporal filtering means (10, 20) which combine inputs (1, 2, 3) of temporal intensities, inputs (4, 5, 7) of spatial intensities, and at least one input (6) of a spatial and temporal and random intensity in order to supply the filtered intensity (40) for the current pixel of the processed image (Jt). The method involves a pseudo-temporal branch (10) which combines temporal inputs (1, 2, 3) with a spatial input (7) and, connected in parallel, a pseudo-spatial branch (20) which combines spatial inputs (1, 4, 5) with a temporal and recursive random input (6), the results (8, 9) of the two parallel branches being combined (140).
摘要翻译：本发明涉及一种降低图像噪声的图像处理方法，包括确定与序列中的三个连续图像中的当前像素相关的三个噪声时间强度，待处理的图像是序列的中心图像。该方法包括将时间强度的输入（1,2,3）和空间强度的输入（4,5,7）组合的空间和时间滤波装置（10,20）以及空间强度的至少一个输入（6）以及时间和随机强度，以便为处理图像（Jt）的当前像素提供滤波强度（40）。该方法涉及将时间输入（1,2,3）与空间输入（7）组合并且并联连接的伪空间分支（20）的伪时间分支（10），其中组合空间输入（1， 4，5）具有时间和递归随机输入（6），两个并行分支的结果（8,9）被组合（140）。

2. 发明授权

US06256403B1 Method of processing an image in which the noise is signal-dependent 失效
标题翻译：处理其中噪声是信号依赖性的图像的方法
公开(公告)号：US06256403B1
公开(公告)日：2001-07-03
申请号：US09207733
申请日：1998-12-08
申请人： Raoul Florent , Shérif Makram-Ebeid , Christel Soyer
发明人： Raoul Florent , Shérif Makram-Ebeid , Christel Soyer
IPC分类号： G06K900
CPC分类号： G06T5/20
摘要： The invention relates to an image processing method for determining a noise curve (NC) relating to an image, including acquisition (100) of an intensity image (J0) of pixels in which the noise is dependent on the signal, cutting (101) the intensity levels into substantially uniform (Mk) bands (QMk), determination (111) of statistical rules (f) which link distributions (Hk) of the standard noise deviations at the levels (QSk) to the intensities of said bands (QMk), determination (114), on the basis of statistical rules (f), of standard noise deviations (SBk) as a function of intensities (Mk), and determination (120) of the noise curve (NC) as a statistical rule (g) of the variations of the standard noise deviations (SBk) as a function of the intensity (Mk). The invention also relates to a method of reducing the noise which utilizes the standard noise deviation (SBk) and to a medical imaging apparatus which utilizes the noise reduction method.
摘要翻译：本发明涉及一种用于确定与图像相关的噪声曲线（NC）的图像处理方法，包括：其中噪声取决于信号的像素的强度图像（J0）的获取（100），切割（101）强度水平变为基本上均匀（Mk）频带（QMK），统计规则（f）的确定（111），水平（QSk）的标准噪声偏差与所述频带（QMK）的强度的链路分布（Hk）作为统计规则（g）的噪声曲线（NC）的确定（120），基于统计规则（f），作为强度函数（Mk）的标准噪声偏差（SBk）的确定（114）作为强度（Mk）的函数的标准噪声偏差（SBk）的变化。本发明还涉及一种减少利用标准噪声偏差（SBk）的噪声的方法以及利用降噪方法

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