专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US10165280B1 Motion detection based on observing several pictures 有权
公开(公告)号：US10165280B1
公开(公告)日：2018-12-25
申请号：US16014207
申请日：2018-06-21
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer , Leslie D. Kohn
IPC分类号： H04N19/139 , G06T5/10 , G06T5/00 , H04N19/513 , H04N19/172 , H04N19/117 , H04N19/82 , H04N5/232 , G06T7/223 , G06T7/215 , H04N19/58 , H04N19/105 , G06T5/50
摘要： A method for motion detection based on observing several pictures. The method may include computing a first motion score of an area in a target picture of a sequence of pictures by a comparison of the area between the target picture and a first reference picture; computing a second motion score of the area by another comparison of the area between a second reference picture and a third reference picture, where the target picture is a different picture than the second reference picture and the third reference picture; and temporal filtering the target picture with the first reference picture based on the first motion score and the second motion score. At least one of the computing of the first motion score, the computing of the second motion score, and the temporal filtering is controlled by one or more gain settings applied to the sequence of pictures in a circuit.

2. 发明授权

US09336572B1 Temporal filtering with local neighborhood limitations 有权
标题翻译：时间过滤与局部邻域限制
公开(公告)号：US09336572B1
公开(公告)日：2016-05-10
申请号：US14595562
申请日：2015-01-13
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： G06K9/40 , G06T5/00 , G06T5/10
CPC分类号： G06T5/002 , G06T5/50 , G06T2207/10016 , G06T2207/20182
摘要： A method for temporal filtering with local neighborhood limitations is disclosed. Step (A) of the method may perform a temporal filter operation on a target sample in a current picture of a sequence of pictures to generate an intermediate value of the target sample. Step (B) may find a minimum value and a maximum value among a plurality of local samples in a local neighborhood in the current picture around the target sample. The minimum value and the maximum value generally bound a minimum/maximum range. Step (C) may adjust the intermediate value toward the minimum/maximum range to generate a final value of the target sample if the intermediate value is outside a limited range. The limited range is generally based on the minimum/maximum range.
摘要翻译：公开了一种具有局部邻域限制的时间滤波方法。该方法的步骤（A）可以对图像序列的当前图像中的目标样本执行时间滤波操作，以生成目标样本的中间值。步骤（B）可以在目标样本周围的当前图像中的局部邻域中的多个局部采样之间找到最小值和最大值。最小值和最大值通常限制最小/最大范围。如果中间值在有限范围之外，则步骤（C）可以将中间值调整到最小/最大范围以产生目标样本的最终值。有限范围通常基于最小/最大范围。

3. 发明授权

US09041836B1 Digital picture noise reduction by combining high-noise and low-noise processed pictures 有权
标题翻译：通过组合高噪声和低噪声处理的图像来降低数字图像噪点
公开(公告)号：US09041836B1
公开(公告)日：2015-05-26
申请号：US14172032
申请日：2014-02-04
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N5/217 , H04N9/64
CPC分类号： H04N9/646 , G06T5/002 , G06T5/50 , G06T2207/20216 , H04N5/21 , H04N5/2173 , H04N5/23229 , H04N9/045
摘要： A method for processing a digital picture is disclosed. The method may include steps (A) to (C). Step (A) may generate a first picture by processing the digital picture using a first noise reduction technique in a circuit. Step (B) may generate a second picture by processing the digital picture using a second noise reduction technique. The first noise reduction technique may achieve a higher noise reduction than the second noise reduction technique. Step (C) may generate an output picture by combining the first picture and the second picture.
摘要翻译：公开了一种处理数字图像的方法。该方法可以包括步骤（A）至（C）。步骤（A）可以通过使用电路中的第一降噪技术处理数字图像来生成第一图像。步骤（B）可以通过使用第二降噪技术处理数字图像来产生第二图像。第一降噪技术可以实现比第二降噪技术更高的噪声降低。步骤（C）可以通过组合第一图像和第二图像来生成输出图像。

4. 发明授权

US08717462B1 Camera with color correction after luminance and chrominance separation 有权
标题翻译：相机在亮度和色度分离后进行色彩校正
公开(公告)号：US08717462B1
公开(公告)日：2014-05-06
申请号：US13949575
申请日：2013-07-24
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N9/68
CPC分类号： H04N9/646
摘要： An apparatus having a circuit is disclosed. The circuit may be configured to (i) receive a digital image from an electro-optical sensor, (ii) convert the digital image from a red-green-blue representation to a luminance-and-chrominance representation, (iii) generate a reduced noise representation of the digital image by reducing noise in the luminance-and-chrominance representation and (iv) generate a color corrected representation of the digital image by color correcting the reduced noise representation.
摘要翻译：公开了一种具有电路的装置。电路可以被配置为（i）从电光传感器接收数字图像，（ii）将数字图像从红 - 绿 - 蓝表示转换为亮度和色度表示，（iii）生成减少的通过降低亮度和色度表示中的噪声，并且（iv）通过对减小的噪声表示进行颜色校正来生成数字图像的色彩校正表示，从而对数字图像进行噪声表示。

5. 发明授权

US10362221B1 Lighting correction for motion detection and temporal filtering 有权
公开(公告)号：US10362221B1
公开(公告)日：2019-07-23
申请号：US15897460
申请日：2018-02-15
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N5/228 , H04N5/232 , G06T5/00 , G06T5/50 , G06T5/20
摘要： An apparatus includes a processor circuit and a correction circuit. The processor circuit may be configured to receive a sequence of pictures. The correction circuit may be configured to (i) generate multiple smooth first samples by spatially smoothing multiple first samples selected from a first picture of said sequence of pictures, (ii) generate multiple smooth second samples by spatially smoothing multiple second samples selected from a second picture of said sequence of pictures, (iii) generate multiple adjusted first samples by combining said smooth first samples, said first samples and said smooth second samples, and (iv) generate multiple values based on said second samples and said adjusted first samples. The first samples and the second samples may have different levels of a lighting condition. The adjusted first samples and the second samples may have similar levels of the lighting condition.

6. 发明授权

US10250910B1 Temporal filtering based on motion detection on areas of different sizes 有权
公开(公告)号：US10250910B1
公开(公告)日：2019-04-02
申请号：US15883220
申请日：2018-01-30
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer , Leslie D. Kohn
IPC分类号： H04N7/12 , H04N19/82 , H04N19/513
摘要： A method for temporal filtering based on motion detection on areas of different sizes includes computing a plurality of motion scores of a plurality of areas in a target picture in a sequence of pictures by motion detection of the areas between the target picture and a reference picture in the sequence of pictures, where the areas may be at least two overlapping areas of different sizes, computing a combined motion score by combining the plurality of motion scores, and generating a filtered picture by temporal filtering the target picture with the reference picture based on the combined motion score. At least one of (i) the motion scores and (ii) the filtered picture may be based on one or more gain settings in a circuit.

7. 发明授权

US10044940B1 Picture brightness adjusted motion detection 有权
公开(公告)号：US10044940B1
公开(公告)日：2018-08-07
申请号：US15725647
申请日：2017-10-05
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N5/14 , G06K9/46 , H04N5/235 , H04N5/202 , H04N9/69 , H04N9/77
摘要： An apparatus includes an input circuit and a processing circuit. The input circuit may be configured to receive a sequence of pictures. The processing circuit may be configured to (i) generate a change factor based on gain information for a reference picture selected from the sequence of pictures, gain information for a target picture selected from the sequence of pictures, an average pixel value for the reference picture, and an average pixel value for the target picture, (ii) remap data of a selected one of the reference picture and the target picture by calculating pixel values for the selected picture using original pixel values of the selected picture and the change factor, and (iii) perform motion detection between the reference picture and the target picture utilizing (a) the remapped image data of the selected picture and (b) original data of the picture that was not remapped.

8. 发明授权

US10021304B1 Temporal filtering based on motion detection between non-adjacent pictures 有权
公开(公告)号：US10021304B1
公开(公告)日：2018-07-10
申请号：US14699310
申请日：2015-04-29
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N5/232 , G06T7/215 , G06T7/223
CPC分类号： H04N19/82 , G06T5/007 , G06T5/009 , G06T5/10 , G06T5/50 , G06T7/215 , G06T7/223 , G06T2207/10004 , G06T2207/10016 , G06T2207/20024 , G06T2207/20182 , H04N5/23254 , H04N5/23258 , H04N5/23277 , H04N19/105 , H04N19/117 , H04N19/139 , H04N19/172 , H04N19/513 , H04N19/521 , H04N19/58
摘要： A method for temporal filtering based on motion detection between non-adjacent pictures is disclosed. Step (A) of the method may compute a plurality of motion scores by motion detection between a target picture in a sequence of pictures and a non-adjacent reference picture in the sequence of pictures. Step (B) may temporal filter the target picture with an adjacent reference picture in the sequence of pictures based on the motion scores to generate a filtered picture. At least one of (i) the motion scores and (ii) the generation of the filtered picture is controlled by one or more gain settings in a circuit.

9. 发明授权

US09948946B1 Temporal filtering based on reduced-resolution motion detection 有权
公开(公告)号：US09948946B1
公开(公告)日：2018-04-17
申请号：US14688071
申请日：2015-04-16
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer
IPC分类号： H04N19/00 , H04N19/513 , H04N19/139 , H04N19/172 , H04N19/117 , H04N19/82
CPC分类号： H04N19/139 , G06T5/007 , G06T5/009 , G06T5/10 , G06T5/50 , G06T7/215 , G06T7/223 , G06T2207/10004 , G06T2207/10016 , G06T2207/20024 , G06T2207/20182 , H04N5/23254 , H04N5/23258 , H04N5/23277 , H04N19/105 , H04N19/117 , H04N19/172 , H04N19/513 , H04N19/521 , H04N19/58 , H04N19/82
摘要： A method for temporal filtering based on reduced-resolution motion detection is disclosed. Step (A) may down-sample a target picture in a sequence of pictures to generate a reduced-resolution target picture. Step (B) may down-sample a reference picture in the sequence of pictures to generate a reduced-resolution reference picture. Step (C) may compute a plurality of reduced-resolution motion scores by motion detection between the reduced-resolution reference picture and the reduced-resolution target picture. Step (D) may temporal filter the target picture with the reference picture based on the reduced-resolution motion scores to generate a filtered picture. At least one of (i) the reduced-resolution motion scores and (ii) the generation of the filtered picture is controlled by one or more gain settings in a circuit.

10. 发明授权

US09560351B1 Low cost rate-distortion computations for video compression 有权
标题翻译：用于视频压缩的低成本率失真计算
公开(公告)号：US09560351B1
公开(公告)日：2017-01-31
申请号：US14136409
申请日：2013-12-20
申请人： Ambarella, Inc.
发明人： Elliot N. Linzer , Hsiang-Chun Huang
IPC分类号： H04N7/12 , H04N19/50
CPC分类号： H04N19/64 , H04N19/103 , H04N19/14 , H04N19/147 , H04N19/156 , H04N19/176 , H04N19/18 , H04N19/36 , H04N19/50 , H04N19/503 , H04N19/593 , H04N19/94
摘要： A method of rate-distortion computations for video compression is disclosed. The method may include steps (A) to (C). Step (A) may generate a plurality of transform coefficients from a residual block of the video using a circuit. Step (B) may generate a block distortion value (i) based on the transform coefficients and (ii) independent of a plurality of inverse transform samples produced from the residual block. Step (C) may generate a rate-distortion value from the block distortion value.
摘要翻译：公开了一种用于视频压缩的速率失真计算的方法。该方法可以包括步骤（A）至（C）。步骤（A）可以使用电路从视频的残留块生成多个变换系数。步骤（B）可以基于变换系数产生块失真值（i），并且（ii）独立于从残余块产生的多个逆变换样本。步骤（C）可以从块失真值产生速率失真值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式