IMAGE STITCHING IN A MULTI-CAMERA ARRAY
    47.
    发明申请

    公开(公告)号:US20170006219A1

    公开(公告)日:2017-01-05

    申请号:US14754694

    申请日:2015-06-30

    Applicant: GoPro, Inc.

    Abstract: Images captured by multi-camera arrays with overlap regions can be stitched together using image stitching operations. An image stitching operation can be selected for use in stitching images based on a number of factors. An image stitching operation can be selected based on a view window location of a user viewing the images to be stitched together. An image stitching operation can also be selected based on a type, priority, or depth of image features located within an overlap region. Finally, an image stitching operation can be selected based on a likelihood that a particular image stitching operation will produce visible artifacts. Once a stitching operation is selected, the images corresponding to the overlap region can be stitched using the stitching operation, and the stitched image can be stored for subsequent access.

    Watermarking digital images to increase bit depth
    50.
    发明授权
    Watermarking digital images to increase bit depth 有权
    水印数字图像以增加位深度

    公开(公告)号:US09418396B2

    公开(公告)日:2016-08-16

    申请号:US14598132

    申请日:2015-01-15

    Applicant: GoPro, Inc.

    Abstract: Watermark data is converted to watermark coefficients, which may be embedded in an image by converting the image to a frequency domain, embedding the watermark in image coefficients corresponding to medium-frequency components, and converting the modified coefficients to the spatial domain. The watermark data is extracted from the modified image by converting the modified image to a frequency domain, extracting the watermark coefficients from the image coefficients, and determining the watermark data from the watermark coefficients. The watermark data may be truncated image data bits such as truncated least significant data bits. After extraction from the watermark, the truncated image data bits may be combined with data bits representing the original image to increase the bit depth of the image. Watermark data may include audio data portions corresponding to a video frame, reference frames temporally proximate to a video frame, high-frequency content, sensor calibration information, or other image data.

    Abstract translation: 水印数据被转换为水印系数,其可以通过将图像转换为频域而嵌入到图像中,将水印嵌入对应于中频分量的图像系数中,并将修改的系数转换为空间域。 通过将修正图像转换为频域,从图像系数中提取水印系数,并根据水印系数确定水印数据,从修改图像中提取水印数据。 水印数据可以是截断的图像数据位,例如截断的最低有效数据位。 在从水印提取之后,截断的图像数据位可以与表示原始图像的数据位组合,以增加图像的位深度。 水印数据可以包括对应于视频帧的音频数据部分,时间上靠近视频帧的参考帧,高频内容,传感器校准信息或其他图像数据。

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