INTER FRAME WATERMARK IN A DIGITAL VIDEO
    1.
    发明申请
    INTER FRAME WATERMARK IN A DIGITAL VIDEO 有权
    数字视频中的帧间水印

    公开(公告)号:US20160212441A1

    公开(公告)日:2016-07-21

    申请号:US14598135

    申请日:2015-01-15

    申请人: GoPro, Inc.

    IPC分类号: H04N19/467 G06T1/00 H04N1/32

    摘要: 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.

    摘要翻译: 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。

    Methods and arrangements for processing image data
    2.
    发明授权
    Methods and arrangements for processing image data 有权
    处理图像数据的方法和布置

    公开(公告)号:US08890950B2

    公开(公告)日:2014-11-18

    申请号:US14022836

    申请日:2013-09-10

    摘要: The present disclosure provides methods and systems for processing data. One claim recites a method practiced using used a user's camera-equipped portable computer system. The method includes the acts of: capturing image data corresponding to a region using the camera of the portable computer system; applying a filter to the captured image data, in which the filter prioritizes image data at a center of the region and averages images data at a relative distance from the center region; and searching the filtered image data for hidden keys. Of course, other combinations and claims are provided as well.

    摘要翻译: 本公开提供了用于处理数据的方法和系统。 一个声明描述了使用使用用户的配备相机的便携式计算机系统实践的方法。 该方法包括以下动作:使用便携式计算机系统的相机拍摄对应于区域的图像数据; 对所捕获的图像数据应用滤波器,其中滤波器对区域中心的图像数据进行优先排序,并且平均距离中心区域相对距离的图像数据; 并搜索经滤波的图像数据中的隐藏密钥。 当然,也提供其他组合和权利要求。

    Image processing apparatus, image data output processing apparatus and image processing method
    4.
    发明授权
    Image processing apparatus, image data output processing apparatus and image processing method 有权
    图像处理装置,图像数据输出处理装置和图像处理方法

    公开(公告)号:US08553929B2

    公开(公告)日:2013-10-08

    申请号:US12925796

    申请日:2010-10-28

    申请人: Kiyoto Motoyama

    发明人: Kiyoto Motoyama

    IPC分类号: G06K9/36

    摘要: An image processing apparatus of the present invention includes: a self-similar image storing section 13 that stores a pattern of a self-similar image; a superimposed image data generating section 15 that generates superimposed image data from a self-similar image, based on the pattern of the self-similar image; an image combining section 17 that combines original image data with the superimposed image data; and a control section 11 that controls operations of the above-mentioned sections. The superimposed image data generating section 15 adjusts a pattern of a self-similar image so that a size of a superimposed image corresponds to a draw size of an original image which draw size is determined by the control section 11. It is therefore possible to combine the original image data with the superimposed image data so that the superimposed image is suitably drawn regardless of the draw size of the original image.

    摘要翻译: 本发明的图像处理装置包括:存储自相似图像的图案的自相似图像存储部13; 叠加图像数据生成部15,其基于自相似图像的图案从自相似图像生成叠加图像数据; 将原始图像数据与叠加的图像数据组合的图像合成部17; 以及控制部11,其控制上述部分的动作。 叠加图像数据生成部15调整自相似图像的图案,使得叠加图像的尺寸对应于原始图像的绘制尺寸,绘制尺寸由控制部分11确定。因此可以组合 具有叠加的图像数据的原始图像数据,使得叠加的图像被适当地绘制,而与原始图像的绘制尺寸无关。

    Hidden image signalling
    5.
    发明授权
    Hidden image signalling 有权
    隐藏图像信号

    公开(公告)号:US08401224B2

    公开(公告)日:2013-03-19

    申请号:US12774512

    申请日:2010-05-05

    IPC分类号: G06K9/00

    摘要: An image is encoded to define one or more spatial regions that can be sensed by a suitably-equipped mobile device (e.g., a smart phone), but are imperceptible to humans. When such a mobile device senses one of these regions, it takes an action in response (e.g., rendering an associated tone, playing linked video, etc.). The regions may overlap in layered fashion. One form of encoding employs modification of the color content of the image at higher spatial frequencies, where human vision is not acute. In a particular embodiment, the encoding comprises altering a transform domain representation of the image by adding signal energy in a first chrominance channel, where the added signal energy falls primarily within a segmented arc region in a transform domain space.

    摘要翻译: 编码图像以定义可由适当装备的移动设备(例如,智能电话)感测的一个或多个空间区域,但是对于人们是不可察觉的。 当这种移动设备感测到这些区域中的一个时,它采取响应的动作(例如,呈现相关联的音调,播放链接的视频等)。 这些区域可以以分层方式重叠。 一种形式的编码采用在较高空间频率下修改图像的颜色内容,其中人类视觉不是尖锐的。 在特定实施例中,编码包括通过在第一色度信道中添加信号能量来改变图像的变换域表示,其中相加的信号能量主要落在变换域空间中的分段弧区域内。

    Perceptual modeling of media signals for data hiding
    6.
    发明授权
    Perceptual modeling of media signals for data hiding 有权
    用于数据隐藏的媒体信号的感知建模

    公开(公告)号:US08213674B2

    公开(公告)日:2012-07-03

    申请号:US12912471

    申请日:2010-10-26

    IPC分类号: G06K9/00 H04N11/02

    摘要: The present disclosure relates generally to embedding auxiliary data and data hiding. One claim recites a method including: receiving data representing a media signal; using a programmed electronic processor, calculating perceptibility characteristics of the media signal, in which the perceptibility characteristics include contrast; using a programmed electronic processor, calculating a non-linear contrast to gain mapping using the perceptibility characteristics; using a programmed electronic processor, embedding an auxiliary signal in the media signal with reference to the non-linear contrast to gain mapping. Other claims and combinations are also provided.

    摘要翻译: 本公开一般涉及嵌入辅助数据和数据隐藏。 一个权利要求描述了一种方法,包括:接收表示媒体信号的数据; 使用编程的电子处理器,计算媒体信号的感知特性,其中感知特性包括对比度; 使用编程的电子处理器,计算非线性对比度以使用感知特性来增益映射; 使用编程的电子处理器,参考非线性对比度将增益映射参考在媒体信号中嵌入辅助信号。 还提供了其他权利要求和组合。

    Optimization methods for the insertion, protection, and detection of digital watermarks in digitized data
    7.
    发明授权
    Optimization methods for the insertion, protection, and detection of digital watermarks in digitized data 有权
    数字化数据中插入,保护和检测数字水印的优化方法

    公开(公告)号:US08175330B2

    公开(公告)日:2012-05-08

    申请号:US13212264

    申请日:2011-08-18

    IPC分类号: G06K9/00 H04L9/32

    摘要: The implementations of digital watermarks can be optimally suited to particular transmission, distribution and storage mediums given the nature of digitally-sampled audio, video and other multimedia works. Watermark application parameters can be adapted to the individual characteristics of a given digital sample stream. Watermark information can be either carried in individual samples or in relationships between multiple samples, such as in a waveform shape. More optimal models may be obtained to design watermark systems that are tamper-resistant given the number and breadth of existent digitized sample options with different frequency and time components. The highest quality of a given content signal may be maintained as it is mastered, with the watermark suitably hidden, taking into account usage of digital filters and error correction. The quality of the underlying content signals can be used to identify and highlight advantageous locations for the insertion of digital watermarks. The watermark is integrated as closely as possible to the content signal, at a maximum level to force degradation of the content signal when attempts are made to remove the watermarks.

    摘要翻译: 考虑到数字采样音频,视频和其他多媒体作品的性质,数字水印的实现可以最适合于特定的传输,分发和存储介质。 水印应用参数可以适应给定数字样本流的各个特征。 水印信息可以在单个样本中携带,也可以在多个样本之间的关系中携带,例如波形形状。 鉴于具有不同频率和时间分量的现有数字化样本选项的数量和广度,可以获得更好的模型来设计防篡改的水印系统。 考虑到数字滤波器的使用和误差校正,可以保持给定内容信号的最高质量,因为它被掌握,水印被适当地隐藏。 底层内容信号的质量可用于识别和突出显示用于插入数字水印的有利位置。 尽可能地将内容信号尽可能地集成到内容信号上,以在尝试去除水印时强制内容信号的劣化。

    Methods and Arrangements Employing Mixed-Domain Displays
    8.
    发明申请
    Methods and Arrangements Employing Mixed-Domain Displays 有权
    使用混合域显示的方法和布置

    公开(公告)号:US20120077542A1

    公开(公告)日:2012-03-29

    申请号:US13208180

    申请日:2011-08-11

    IPC分类号: G06K9/00 H04W88/02 H04M1/02

    摘要: An image is encoded to define one or more spatial regions that can be sensed by a suitably-equipped mobile device (e.g., a smartphone), but are imperceptible to humans. When such a mobile device senses one of these regions, it takes an action in response (e.g., rendering an associated tone, playing linked video, etc.). The regions may overlap in layered fashion. One form of encoding employs modification of the color content of the image at higher spatial frequencies, where human vision is not acute. In a particular embodiment, the encoding comprises altering a transform domain representation of the image by adding signal energy in a first chrominance channel, where the added signal energy falls primarily within a segmented arc region in a transform domain space. In another arrangement, a smartphone display presents both image data captured from a scene, and a transform representation of the image data (e.g., in the Fourier domain). This latter information can aid a user in positioning the phone, e.g., to enhance decoding of a steganographic digital watermark. In still another arrangement, foveal filtering is applied to of smartphone-captured image data in connection with other image processing.

    摘要翻译: 编码图像以定义可由适当装备的移动设备(例如,智能电话)感测到的一个或多个空间区域,但是对于人是不可察觉的。 当这种移动设备感测到这些区域中的一个时,它采取响应的动作(例如,呈现相关联的音调,播放链接的视频等)。 这些区域可以以分层方式重叠。 一种形式的编码采用在较高空间频率下修改图像的颜色内容,其中人类视觉不是尖锐的。 在特定实施例中,编码包括通过在第一色度信道中添加信号能量来改变图像的变换域表示,其中相加的信号能量主要落在变换域空间中的分段弧区域内。 在另一种布置中,智能手机显示器呈现从场景捕获的图像数据和图像数据的变换表示(例如,在傅立叶域中)。 后一种信息可以帮助用户定位电话,例如,以增强隐写数字水印的解码。 在另一种安排中,中心凹滤波被应用于与其他图像处理有关的智能手机捕获的图像数据。