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1. 发明授权

US10298949B2 Method and apparatus for producing a video stream 有权
公开(公告)号：US10298949B2
公开(公告)日：2019-05-21
申请号：US15141637
申请日：2016-04-28
申请人： FotoNation Limited
发明人： Razvan G. Condorovici , Cosmin Stan , Ilinca Dobre
IPC分类号： H04N7/12 , H04N19/51 , G06T5/00 , G06T5/50 , H04N5/232
摘要： A method of processing a stream of images comprises obtaining an image of a scene with a relatively short exposure time (SET) and obtaining an image of the same scene with a relatively longer exposure time (LET). Motion blur characteristics for the SET image corresponding to motion within the LET image are determined and the motion blur characteristics are applied to the SET image. The blurred SET image and the LET image are blended to provide a HDR image. The process is repeated for successive pairs of images in the stream to provide a sequence of HDR images which can be encoded in a video stream.

2. 发明授权

US10452910B2 Method of avoiding biometrically identifying a subject within an image 有权
公开(公告)号：US10452910B2
公开(公告)日：2019-10-22
申请号：US15301937
申请日：2015-03-27
申请人： FotoNation Limited
发明人： Ilariu Raducan , Ruxandra Vranceanu , Razvan Condorovici , Cosmin Stan , Peter Corcoran
IPC分类号： G06K9/00 , G06F16/50
摘要： A method of image processing within an image acquisition device. In one embodiment an image including one or more face regions is acquired and one or more iris regions are identified within the one or more face regions. The one or more iris regions are analyzed to identify any iris region containing an iris pattern that poses a risk of biometrically identifying a subject within the image. Responsive to identifying any such iris region, a respective substitute iris region, containing an iris pattern distinct from the identified iris pattern to avoid identifying the subject within the image, is determined and the identified iris region is replaced with the substitute iris region in the original image.

3. 发明授权

US10834331B2 Blurring a digital image 有权
公开(公告)号：US10834331B2
公开(公告)日：2020-11-10
申请号：US16503205
申请日：2019-07-03
申请人： FotoNation Limited
发明人： Cosmin Pit Rada , Cosmin Stan
IPC分类号： H04N5/262 , G06T5/00 , G06T5/20 , G06T11/00 , H04N5/232
摘要： A method is disclosed for processing at least a portion of an input digital image comprising rows of pixels extending in two mutually perpendicular directions over a 2D field. The method comprises defining a kernel for processing an image, the kernel comprising at least one row of contiguous elements of the same non-zero value (such rows being referred to herein as equal-valued kernel regions), the equal-valued kernel regions, if more than one, extending parallel to one another. For each pixel in at least selected parallel rows of pixels within the image portion, the cumulative sum of the pixel is calculated by adding a value of the pixel to the sum of all preceding pixel values in the same row of the image portion. The kernel is convolved with the image portion at successive kernel positions relative to the image portion such that each pixel in each selected row is a target pixel for a respective kernel position. For each kernel position, the convolving is performed, for each equal-valued kernel region, by calculating the difference between the cumulative sum of the pixel corresponding to the last element in the equal-valued kernel region and the cumulative sum of the pixel corresponding to the element immediately preceding the first element in the region, and summing the differences for all equal-valued kernel regions. The differences sum is scaled to provide a processed target pixel value.

4. 发明授权

US10769435B2 Method of avoiding biometrically identifying a subject within an image 有权
公开(公告)号：US10769435B2
公开(公告)日：2020-09-08
申请号：US16656303
申请日：2019-10-17
申请人： FotoNation Limited
发明人： Ilariu Raducan , Ruxandra Vranceanu , Razvan Condorovici , Cosmin Stan , Peter Corcoran
IPC分类号： G06K9/00
摘要： A method of image processing within an image acquisition device. In one embodiment an image including one or more face regions is acquired and one or more iris regions are identified within the one or more face regions. The one or more iris regions are analyzed to identify any iris region containing an iris pattern that poses a risk of biometrically identifying a subject within the image. Responsive to identifying any such iris region, a respective substitute iris region, containing an iris pattern distinct from the identified iris pattern to avoid identifying the subject within the image, is determined and the identified iris region is replaced with the substitute iris region in the original image.

5. 发明授权

US10348979B2 Blurring a digital image 有权
公开(公告)号：US10348979B2
公开(公告)日：2019-07-09
申请号：US15134605
申请日：2016-04-21
申请人： FotoNation Limited
发明人： Cosmin Pit Rada , Cosmin Stan
IPC分类号： H04N5/262 , G06T5/00 , G06T5/20 , G06T11/00 , H04N5/232
摘要： A method is disclosed for processing at least a portion of an input digital image comprising rows of pixels extending in two mutually perpendicular directions over a 2D field. The method comprises defining a kernel for processing an image, the kernel comprising at least one row of contiguous elements of the same non-zero value (such rows being referred to herein as equal-valued kernel regions), the equal-valued kernel regions, if more than one, extending parallel to one another. For each pixel in at least selected parallel rows of pixels within the image portion, the cumulative sum of the pixel is calculated by adding a value of the pixel to the sum of all preceding pixel values in the same row of the image portion. The kernel is convolved with the image portion at successive kernel positions relative to the image portion such that each pixel in each selected row is a target pixel for a respective kernel position. For each kernel position, the convolving is performed, for each equal-valued kernel region, by calculating the difference between the cumulative sum of the pixel corresponding to the last element in the equal-valued kernel region and the cumulative sum of the pixel corresponding to the element immediately preceding the first element in the region, and summing the differences for all equal-valued kernel regions. The differences sum is scaled to provide a processed target pixel value.

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