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    Electronic image stabilization frequency estimator
    21.
    发明授权
    Electronic image stabilization frequency estimator 有权

    公开(公告)号：US09756249B1

    公开(公告)日：2017-09-05

    申请号：US15140391

    申请日：2016-04-27

    Applicant: GoPro, Inc.

    Inventor： Loic Segapelli

    IPC: H04N5/232 ,  H04N5/228

    CPC classification number: H04N5/23258 ,  H04N5/144 ,  H04N5/21 ,  H04N5/23238 ,  H04N5/23261 ,  H04N5/23267 ,  H04N5/2328

    Abstract: Disclosed are a system and a method for determining enabling or disabling electronic image stabilization (EIS) for a video frame. An image sensor of a camera system captures a video stream that comprises a plurality of video frames. An image processor determines availability of a computational resource that may process application of EIS on each video frame. Simultaneously, the image processor receives motion data of the camera system from a gyroscope. Based on the computational resource availability, a motion frequency threshold is determined. Based on the gyroscope motion data, a motion frequency of each video frame is estimated. The estimated motion frequency is compared to the determined motion frequency threshold. If the estimated motion frequency is greater than the determined motion frequency threshold, application of EIS is disabled. If the estimated motion frequency is less than or equal to the determined motion frequency threshold, application of EIS is enabled.

    IMAGE PROCESSING METHOD FOR DETAIL ENHANCEMENT AND NOISE REDUCTION
    24.
    发明申请
    IMAGE PROCESSING METHOD FOR DETAIL ENHANCEMENT AND NOISE REDUCTION 审中-公开

    公开(公告)号：US20170186139A1

    公开(公告)日：2017-06-29

    申请号：US15457783

    申请日：2017-03-13

    Applicant: FLIR Systems AB

    Inventor： Stefan Olsson

    IPC: G06T5/00 ,  G06T5/20

    CPC classification number: G06T5/002 ,  G06T5/003 ,  G06T5/004 ,  G06T5/005 ,  G06T5/20 ,  G06T2207/10048 ,  G06T2207/20012 ,  G06T2207/20024 ,  G06T2207/20192 ,  H04N5/208 ,  H04N5/21

    Abstract: One or more embodiments of the invention relate to an image processing system and method for detail enhancement and noise reduction, in which the method includes: (a) an original image is created, (b) an information measure is calculated on the basis of the original image, (c) a weighting measure is calculated on the basis of the information measure, (d) the original image is low-pass filtered with a low-pass filter to form a low-pass filtered image, (e) a high-pass filtered image is calculated by subtracting the low-pass filtered image from the original image, (f) a detail-enhanced and noise-reduced image is obtained by a high-pass image scaled with the weighting measure being added to the low-pass image. One or more embodiments of the invention additionally relate to an image processing device comprising an image recording device, an image processing unit and an image display unit.

    Raw camera noise reduction using alignment mapping
    27.
    发明授权
    Raw camera noise reduction using alignment mapping 有权

    公开(公告)号：US09619862B2

    公开(公告)日：2017-04-11

    申请号：US14726386

    申请日：2015-05-29

    Applicant: Apple Inc.

    Inventor： Mark Zimmer

    IPC: G06T3/40 ,  G06T5/00 ,  G06K9/40 ,  G06K9/46 ,  G09G5/02 ,  G09G5/28 ,  H04N5/21

    CPC classification number: G06T3/4015 ,  G06T5/002 ,  G06T2207/10024 ,  G06T2207/20016 ,  G06T2207/20021 ,  H04N5/21

    Abstract: This disclosure pertains to novel devices, methods, and computer readable media for performing raw camera noise reduction using a novel, so-called “alignment mapping” technique to more effectively separate structure from noise in an image, in order to aid in the denoising process. Alignment mapping allows for the extraction of more structure from the image and also the ability to understand the image structure, yielding information for edge direction, edge length, and corner locations within the image. This information can be used to smooth long edges properly and to prevent tight image details, e.g., text, from being overly smoothed. In alignment maps, the amount of noise may be used to compute thresholds and scaling parameters used in the preparation of the alignment map. According to some embodiments, a feature map may also be created for the image. Finally, the image may be smoothed using the created feature map as a mask.

    System and method of filtering noise
    29.
    发明授权
    System and method of filtering noise 有权

    公开(公告)号：US09602699B2

    公开(公告)日：2017-03-21

    申请号：US13307366

    申请日：2011-11-30

    Applicant: Atul Puri ,  Mehmet Reha Civanlar

    Inventor： Atul Puri ,  Mehmet Reha Civanlar

    IPC: H04N7/12 ,  H04N5/21 ,  H04N19/86

    CPC classification number: H04N19/86 ,  G06K9/6267 ,  H04N5/21 ,  H04N19/136 ,  H04N19/65

    Abstract: A system and method of removing noise in a bitstream is disclosed. Based on segment classifications of a bitstream, each segment or portion is encoded with a different encoder associated with the portion model and chosen from a plurality of encoders. The coded bitstream for each segment includes information regarding which encoder was used to encode that segment. A circuit for removing noise in video content includes a first filter connected to a first input switch and a first output switch, the first filter being in parallel with a first pass-through line, a second filter connected to a second input switch and a second output switch, the second filter connected in parallel with a second pass-through line, and a third filter connected to a third input switch in a third output switch.

    Cascaded bit sequences in display systems
    30.
    发明授权
    Cascaded bit sequences in display systems 有权
    显示系统中的级联位序列

    公开(公告)号：US09591188B2

    公开(公告)日：2017-03-07

    申请号：US14446374

    申请日：2014-07-30

    Applicant: Brass Roots Technologies, LLC

    Inventor： Bradley William Walker

    IPC: G06F3/14 ,  H04N5/04 ,  H04N5/21 ,  G09G3/00 ,  G09G3/20 ,  G09G3/34

    CPC classification number: H04N5/04 ,  G06F3/1423 ,  G09G3/002 ,  G09G3/2029 ,  G09G3/3426 ,  G09G2320/0646 ,  H04N5/21

    Abstract: The present disclosure pertains to a method for designing cascaded bit sequences for cascaded digital displays. The method avoids unwanted interactions between cascaded sequences in cascaded digital displays. By using sequences with a particular structure, cascaded sequences can be designed such that no sequence is affected by the others. The following rules must be followed in constructing the sequence. First, the display devices must be frame-locked, so that the timing relationship between the sequences is maintained throughout each frame. Second, for each display device, the ratio of bit plane weights must remain constant, regardless of the pixel data displayed on the other display device(s). Third, the amount of bit plane skew must remain constant, regardless of the pixel data displayed on the other display device(s). Fourth, bit plane phased leakage must be compensated for or avoided.

    Abstract translation: 本公开涉及用于级联数字显示器的级联比特序列的设计方法。 该方法避免了级联数字显示器中级联序列之间的不必要的相互作用。 通过使用具有特定结构的序列，可以设计级联序列，使得序列不受其他序列的影响。 在构建序列时必须遵循以下规则。 首先，显示设备必须被帧锁定，使得在每个帧中维持序列之间的时序关系。 第二，对于每个显示设备，位平面权重的比率必须保持恒定，而与其他显示设备上显示的像素数据无关。 第三，与其他显示设备上显示的像素数据无关，位平面偏移的量必须保持不变。 第四，位平面分相泄漏必须补偿或避免。

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