公开(公告)号：US20190005625A1

公开(公告)日：2019-01-03

申请号：US16058643

申请日：2018-08-08

申请人： Adasky, Ltd.

发明人： Oleg KUYBEDA ,  Eyal MADAR ,  Assaf WEISSMAN

IPC分类号： G06T5/00 ,  G06T7/20 ,  G06T7/00 ,  H04N5/33

CPC分类号： G06T5/003 ,  G06T5/002 ,  G06T7/0002 ,  G06T7/20 ,  G06T7/254 ,  G06T2207/10048 ,  G06T2207/20208 ,  H04N5/33 ,  H04N5/3656

摘要： A system and method for correcting nonuniformity in far-infrared (FIR) images captured by a shutterless FIR camera. The method includes determining a noise of a current image based on updating a noise estimate of a previous image with a noise estimate of a current image; determining a weight mask matrix of the current image, where the weight matrix includes high values corresponding to pixels of the current image in which noise estimation is facilitated, and low values corresponding to pixels of the current image in which noise estimation is inhibited; applying the weight mask matrix to the current image; and correcting the nonuniformity of the current image incrementally based on the determined noise of current image and the applied weight mask matrix.

公开(公告)号：US10015425B2

公开(公告)日：2018-07-03

申请号：US14695539

申请日：2015-04-24

申请人： ULIS

发明人： Amaury Saragaglia ,  Alain Durand

IPC分类号： G01J1/44 ,  G01J5/22 ,  H04N3/09 ,  H04N5/365 ,  H04N5/33 ,  G01J5/24

CPC分类号： H04N5/3651 ,  G01J1/44 ,  G01J5/22 ,  G01J5/24 ,  G01J2001/444 ,  H04N3/09 ,  H04N5/33 ,  H04N5/365 ,  H04N5/3656

摘要： The invention concerns a method of image processing involving: receiving, by a processing device, an input image (IB) captured by a pixel array sensitive to infrared radiation; determining, based on the input image and on a column component vector (VCOL), a first scale factor (α) by estimating a level of the column spread present in the input image; generating column offset values (α.VCOL(y)) based on the product of the first scale factor with the values of the vector; determining, based on the input image and on a 2D dispersion matrix (IDISP), a second scale factor (β) by estimating a level of the 2D dispersion present in the input image; generating pixel offset values (β.IDISP(x,y)) based on the product of the second scale factor with the values of the matrix; and generating a corrected image (IC′) by applying the column and pixel offset values.

公开(公告)号：US09819853B2

公开(公告)日：2017-11-14

申请号：US15233621

申请日：2016-08-10

申请人： FUJIFILM Corporation

发明人： Koichi Tanaka

IPC分类号： H04N5/232 ,  G03B13/00 ,  G02B7/34 ,  G03B13/36 ,  H04N9/04 ,  H04N5/365 ,  H04N5/369

CPC分类号： H04N5/23212 ,  G02B7/34 ,  G03B13/36 ,  H04N5/3656 ,  H04N5/3696 ,  H04N9/045

摘要： A phase difference AF processing unit (19) compares subject images between a region R1 and a region Rj (j=2 to m) in an AF area (53), and determines a phase difference detection pixel (52A, 52B) as a detection signal addition target with respect to a phase difference detection pixel (52A, 52B) in the region R1 among phase difference detection pixels (52A, 52B) in the region Rj. Further, the phase difference AF processing unit (19) adds up detection signals with respect to the phase difference detection pixels (52A, 52B) in the region R1 and the phase difference detection pixels (52A, 52B) which are addition targets, and generates a defocus amount (Df1) from a result of a correlation operation using detection signals after addition. A system control unit (11) drives a focus lens according to the defocus amount (Df1) to perform a focusing control.

公开(公告)号：US20170272671A1

公开(公告)日：2017-09-21

申请号：US15447854

申请日：2017-03-02

申请人： Shinji SAKAGUCHI ,  Tohru Kanno

发明人： Shinji SAKAGUCHI ,  Tohru Kanno

IPC分类号： H04N5/365 ,  H04N5/378 ,  H04N5/374 ,  H04N5/369

CPC分类号： H04N5/3656 ,  H04N5/361 ,  H04N5/3692 ,  H04N5/3696 ,  H04N5/374 ,  H04N5/378

摘要： A solid-state imaging device includes: a valid area including pixels that are not shielded from light; a first light-blocked area and a second light-blocked area each including pixels that are shielded from light; an analog-to-digital converting unit to convert the electric charge accumulated by the pixels belonging to the first light-blocked area, the valid area, and the second light-blocked area, to image data at a time; a signal reading unit to read light-blocked data obtained from the first light-blocked area and the second light-blocked area, and valid data obtained from the valid area, in units of pixels; a reference black level estimating unit to estimate a reference black level of the light-blocked data; and a level correction unit to correct, based on the estimated reference black level, a size of the valid data obtained simultaneously with the light-blocked data used in estimating the reference black level.

公开(公告)号：US09549130B2

公开(公告)日：2017-01-17

申请号：US14702548

申请日：2015-05-01

申请人： Seek Thermal, Inc.

发明人： Jeffery Lee

IPC分类号： H01L25/00 ,  H04N5/357 ,  G06T5/20 ,  G06T5/40 ,  H04N5/33 ,  H04N5/378 ,  H04N5/341 ,  H04N5/232

CPC分类号： H04N5/357 ,  G06T5/20 ,  G06T5/40 ,  H04N5/23293 ,  H04N5/332 ,  H04N5/341 ,  H04N5/3656 ,  H04N5/3658 ,  H04N5/378

摘要： In some embodiments, methods or systems may be provided for an imaging system including an imaging sensor, wherein frames or sub-frames of intensity data may be acquired from some or all pixels of the frame, and a moving kernel, smaller than the frame or sub-frame, is moved over the frame for analysis. The values of the center column of the kernel may be compared to the outer column values of the kernel and a column offset for the center column may be determined. Only one offset value may be stored at any one time for each pixel in the frame or sub-frame.

摘要翻译： 在一些实施例中，可以为包括成像传感器的成像系统提供方法或系统，其中强度数据的帧或子帧可以从帧的一些或所有像素获取，以及移动的内核，小于帧或 子框架，移动框架进行分析。 可以将内核的中心列的值与内核的外部列值进行比较，并且可以确定中心列的列偏移量。 对于帧或子帧中的每个像素，可以在任何一个时间存储一个偏移值。

公开(公告)号：US20160127648A1

公开(公告)日：2016-05-05

申请号：US14993705

申请日：2016-01-12

申请人： CANON KABUSHIKI KAISHA

发明人： Keiichiro Ishihara

IPC分类号： H04N5/232 ,  G06T5/00 ,  G06T7/00 ,  G06K9/62 ,  G06T7/60 ,  G06K9/52

CPC分类号： H04N5/23267 ,  G02B7/102 ,  G02B7/38 ,  G06K9/52 ,  G06K9/6201 ,  G06T5/00 ,  G06T7/60 ,  G06T2207/20201 ,  H04N5/208 ,  H04N5/23212 ,  H04N5/3656 ,  H04N9/646

摘要： A processing device which obtains distance information of a subject, including: a calculation unit configured to calculate the distance information of the subject from a difference in blur degree of a plurality of images photographed by an imaging optical system; a correcting unit configured to correct the distance information using correction data in accordance with an image height in the imaging optical system; and an extraction unit configured to extract at least one frequency component from each of the plurality of images, wherein the calculation unit calculates the distance information from a difference in blur degree in the plurality of images in the at least one frequency component; and the correcting unit corrects the distance information using correction data in accordance with an image height in the at least one frequency component.

公开(公告)号：US20130071000A1

公开(公告)日：2013-03-21

申请号：US13698424

申请日：2011-02-25

申请人： Tatsuya Takagi

发明人： Tatsuya Takagi

IPC分类号： G06K9/00

CPC分类号： A61B6/5258 ,  A61B6/4233 ,  A61B6/4283 ,  A61B6/4405 ,  A61B6/5252 ,  G06T5/002 ,  G06T5/20 ,  G06T2207/10116 ,  G06T2207/20012 ,  G06T2207/20192 ,  G06T2207/20224 ,  H04N1/409 ,  H04N5/3656 ,  H04N5/3658

摘要： A radiographic-image processing apparatus that can accurately remove striated artifacts superimposed onto image data taken by an FPD radiographic imaging device includes: a partitioning section that partitions a region, in which image data taken by a radiographic imaging device is arranged two-dimensionally, into segments; a mean-value computation section that computes mean values from the image data along the same scanning line in each segment; an edge compression section that compresses mean-value differentials in boundary regions between the imaged subject and the surroundings thereof; a filtering section that applies an adaptive filter to the differential-compressed profile; and a correction-data creation section that creates correction data on the basis of each datum in the adaptive-filtered profile. Image data in which noise is removed is generated by subtracting corresponding correction data from the image data.

摘要翻译： 可以准确地去除叠加在由FPD放射摄影成像装置拍摄的图像数据上的条纹伪影的放射线照相图像处理装置，其特征在于，包括：分割部，其将通过放射线摄像装置拍摄的图像数据二维地排列的区域分割成 段; 平均值计算部，其计算来自所述图像数据的平均值，沿着各段中的同一扫描线; 边缘压缩部，压缩被成像对象与其周围的边界区域的平均值差; 滤波部分，其将自适应滤波器应用于差分压缩分布; 以及校正数据创建部分，其基于自适应滤波的轮廓中的每个数据产生校正数据。 通过从图像数据中减去对应的校正数据来生成消除噪声的图像数据。

公开(公告)号：US08319862B2

公开(公告)日：2012-11-27

申请号：US12162366

申请日：2007-01-25

申请人： Shmuel Mangoubi ,  Oved Naveh

发明人： Shmuel Mangoubi ,  Oved Naveh

IPC分类号： H04N9/64

CPC分类号： G06T5/50 ,  G06T5/002 ,  G06T5/006 ,  G06T5/007 ,  G06T2207/10048 ,  G06T2207/20224 ,  H04N5/33 ,  H04N5/3656

摘要： Methods and apparatus for effecting a non-uniformity correction of images of a scene obtained with an array of detector elements are disclosed. A first image of the scene having a first integration period is acquired using the array of detector elements. A second image of the scene having a different integration period is acquired, and a corrected image of the scene is generated by computing a difference of the images. In some embodiments, the first and second images are images of substantially identical scenes. According to some embodiments, the images are infrared images. Optionally, the corrected image is subjected to further correction using pixel dependent correction coefficients, such as gain coefficients. Exemplary image detection elements include but are not limited to InSb detector elements and ternary detector elements, such as InAlSb, MCT (Mercury Cadmium Telluride), and QWIP technology (Quantum Well Infrared Photodiodes). In some embodiments, the detector elements are cooled to a temperature substantially equal to an atmospheric boiling point of liquid nitrogen. Alternatively, the detector elements are cooled to a temperature below an atmospheric boiling point of liquid nitrogen, or any other operating temperature.

摘要翻译： 公开了一种用于实现用检测器元件阵列获得的场景的图像的不均匀性校正的方法和装置。 使用检测器元件阵列获取具有第一积分周期的场景的第一图像。 获取具有不同积分周期的场景的第二图像，并且通过计算图像的差异来生成场景的校正图像。 在一些实施例中，第一和第二图像是基本上相同的场景的图像。 根据一些实施例，图像是红外图像。 可选地，使用诸如增益系数的像素相关校正系数对校正图像进行进一步校正。 示例性图像检测元件包括但不限于InSb检测器元件和三元检测器元件，例如InAlSb，MCT（碲化汞碲化镉）和QWIP技术（量子阱红外光电二极管）。 在一些实施例中，将检测器元件冷却至基本等于液氮的常压沸点的温度。 或者，将检测器元件冷却至低于液氮的常压沸点或任何其它工作温度的温度。

公开(公告)号：US08314846B2

公开(公告)日：2012-11-20

申请号：US12594187

申请日：2008-03-26

申请人： Gilles Chamming's

发明人： Gilles Chamming's

IPC分类号： H04N5/228

CPC分类号： H04N5/3651 ,  H04N5/3656

摘要： The invention relates to matrix image sensors, and it relates more particularly to a method for correcting the spatial noise generated by the dispersion of the physical properties of the different individual sensitive dots, or pixels, of the matrix. For each pixel, in an individual electronic circuit associated with the pixel, a recursively digital method is used to determine an approximate value (Mij,n) of an average of the signal Sij,n obtained from the pixel during this large number of images; the signal obtained from each pixel is corrected according to the determined approximate average value and according to a reference average value (M0), and a corrected signal S*ij,n is transmitted from the circuit associated with the pixel.

摘要翻译： 本发明涉及矩阵图像传感器，并且更具体地涉及用于校正由矩阵的不同单独敏感点或像素的物理性质的分散产生的空间噪声的方法。 对于每个像素，在与像素相关联的单个电子电路中，使用递归数字方法来确定在该大量图像期间从像素获得的信号Sij，n的平均值的近似值（Mij，n）; 根据确定的近似平均值并根据参考平均值（M0）来校正从每个像素获得的信号，并且从与像素相关联的电路发送校正信号S * ij，n。

公开(公告)号：US08203116B2

公开(公告)日：2012-06-19

申请号：US12907390

申请日：2010-10-19

申请人： Ching-Ju J. Young

发明人： Ching-Ju J. Young

IPC分类号： H01J40/14

CPC分类号： H04N5/3675 ,  H04N5/33 ,  H04N5/3651 ,  H04N5/3656

摘要： In various embodiments, a method and system for compensating non-uniformities among detector elements of a detector array, without the use of dither mirrors or requirement of scene motion for non-uniformity correction achieved by computing scene spatial gradient and temporal gradient of image frames of the scene captured by the detector array at different times, and utilizing both the scene spatial and temporal gradients in detailed local gradient processing. Such local gradient processing may include computing masks to preserve spatial scene details, while eliminating scene noise (e.g., fixed pattern noise) from the captured image frames and correcting non-uniformity among detector elements.

摘要翻译： 在各种实施例中，一种用于补偿检测器阵列的检测器元件之间的不均匀性的方法和系统，而不需要使用抖动反射镜，或者通过计算场景空间梯度和图像帧的时间梯度来实现非均匀性校正的场景运动 在不同时间由检测器阵列捕获的场景，并且在详细的局部梯度处理中利用场景空间和时间梯度。 这样的本地梯度处理可以包括计算掩模以保留空间场景细节，同时从捕获的图像帧中消除场景噪声（例如，固定模式噪声）并校正检测器元件之间的不均匀性。