Shutter time compensation
    71.
    发明申请
    Shutter time compensation 有权
    快门时间补偿

    公开(公告)号:US20080309778A1

    公开(公告)日:2008-12-18

    申请号:US11818673

    申请日:2007-06-15

    IPC分类号: H04N5/228 H04N5/00

    摘要: A hybrid imaging device is configured to capture low resolution video and high resolution still images. The imaging device is configured to apply motion information obtained from the low resolution video to a reference high resolution still image to generate a missing moment of interest high resolution still image. The low-resolution video is captured at a high frame rate in conjunction with a few high-resolution still pictures taken at periodic intervals. A user locates a desired scene of interest, e.g. a moment of interest, from the captured video, and a post-processing technique is used to generate the high resolution still picture corresponding to the selected moment of interest. The high resolution still image is generated using texture information from one or more nearby captured high resolution still images and motion information from the low-resolution video frame corresponding to the selected moment of interest.

    摘要翻译: 混合成像装置被配置为捕获低分辨率视频和高分辨率静止图像。 成像装置被配置为将从低分辨率视频获得的运动信息应用于参考高分辨率静止图像,以产生缺失的兴趣高分辨率静止图像。 低分辨率视频以高帧速率捕获,并结合以周期性间隔拍摄的几张高分辨率静态照片。 用户定位所期望的感兴趣的场景,例如, 利用拍摄视频的时刻和后处理技术来生成与所选择的兴趣时刻相对应的高分辨率静止图像。 使用来自一个或多个附近拍摄的高分辨率静止图像的纹理信息和来自对应于所选择的感兴趣时刻的低分辨率视频帧的运动信息来生成高分辨率静止图像。

    Method of compensating the color tone differences between two images of the same scene
    72.
    发明申请
    Method of compensating the color tone differences between two images of the same scene 有权
    补偿相同场景的两幅图像之间的色调差异的方法

    公开(公告)号:US20080304087A1

    公开(公告)日:2008-12-11

    申请号:US11811717

    申请日:2007-06-11

    IPC分类号: G06F15/00

    摘要: The color tone compensation method provides a simple and efficient method to compensate the color tone differences between two different sources of images. A first image sample, such as a still image, from a first image capturing source and a second image sample, such as a video frame, from a second image capturing source are aligned, and a tone-mapping estimation routine is applied to the two aligned images. The tone-mapping estimation routine uses the pixel intensity value histograms associated with the two aligned images and generates a tone mapping table. The tone mapping table includes a conversion intensity value for each intensity value in the second image. The conversion intensity value is a statistical measure, such as the mean, calculated according to the data in the corresponding pixel intensity value histogram. The tone-mapping table is applied to any image generated by the second image capturing source, thereby generating a new image with similar color tone as the first image generated by the first image capturing source.

    摘要翻译: 色调补偿方法提供了一种简单有效的方法来补偿两种不同图像源之间的色调差异。 将来自第一图像捕获源的第一图像样本(例如静止图像)和来自第二图像捕获源的诸如视频帧的第二图像样本对准,并且将色调映射估计例程应用于两个 对齐图像。 色调映射估计例程使用与两个对准图像相关联的像素强度值直方图,并生成色调映射表。 色调映射表包括第二图像中每个强度值的转换强度值。 转换强度值是统计度量,如平均值,根据相应像素强度值直方图中的数据计算。 色调映射表应用于由第二图像捕获源产生的任何图像,从而生成与由第一图像捕获源生成的第一图像相似的色调的新图像。

    Efficient binary coding scheme for multimedia content descriptions
    73.
    发明授权
    Efficient binary coding scheme for multimedia content descriptions 失效
    用于多媒体内容描述的高效二进制编码方案

    公开(公告)号:US07398275B2

    公开(公告)日:2008-07-08

    申请号:US10029758

    申请日:2001-10-22

    IPC分类号: G06F7/00

    摘要: An encoding methodology encodes an instance document describing multimedia content by determining a context node in the content description and using a schema associated with the context node to determine the maximum number of children attributes and elements of the context node. Values for required attributes and elements are encoded into required attributes and required elements sections, respectively. Values for each optional attribute and optional element present in the content description are encoded into corresponding optional attributes and optional elements sections. In one aspect, a mask is encoded that indicates which of the optional attributes or optional elements are present in the content description. In another aspect, a count of the optional attributes or optional elements is used in place of the mask. A corresponding decode methodology extracts the values of the attributes and elements from the encoded instance document to re-create the content description.

    摘要翻译: 编码方法通过确定内容描述中的上下文节点并且使用与上下文节点相关联的模式来确定描述多媒体内容的实例文档来确定上下文节点的子级属性和元素的最大数量。 所需属性和元素的值分别编码为必需属性和必需元素部分。 内容描述中存在的每个可选属性和可选元素的值被编码为相应的可选属性和可选元素部分。 在一个方面,编码掩码,其指示在内容描述中存在哪些可选属性或可选元素。 在另一方面,使用可选属性或可选元素的计数代替掩码。 相应的解码方法从编码的实例文档中提取属性和元素的值,以重新创建内容描述。

    Kalman tracking of color objects
    76.
    发明授权
    Kalman tracking of color objects 失效
    卡尔曼跟踪颜色对象

    公开(公告)号:US06917692B1

    公开(公告)日:2005-07-12

    申请号:US09318682

    申请日:1999-05-25

    IPC分类号: G06K9/00 G06T7/20

    CPC分类号: G06K9/32 G06T7/277

    摘要: A semi-automatic method of tracking color objects in a video image sequence starts by separating the objects on the basis of color and identifying an object of interest to track. A Kalman predictive algotithm in used to predict the position of the centroid of the object of interest through successive frames. From the predicted position the actual centroid is measured and the position and velocity are smoothed using a Kalman filter. Error recovery is provided in the event the centroid falls outside the field of view or falls into an area of a different color, or in the event the tracking algorithm breaks down.

    摘要翻译: 在视频图像序列中跟踪颜色对象的半自动方法通过基于颜色分离对象并识别要跟踪的感兴趣对象来开始。 卡尔曼预测算法用于通过连续帧预测感兴趣对象的质心的位置。 从预测位置,使用卡尔曼滤波器测量实际质心并使位置和速度平滑。 如果重心落在视野之外或落入不同颜色的区域,或者跟踪算法发生故障的情况下,则会提供错误恢复。

    Process to extract regions of homogeneous texture in a digital picture
    77.
    发明授权
    Process to extract regions of homogeneous texture in a digital picture 失效
    在数字图片中提取均质纹理区域的过程

    公开(公告)号:US06693962B1

    公开(公告)日:2004-02-17

    申请号:US09495189

    申请日:2000-02-01

    IPC分类号: H04N718

    摘要: A method of extracting regions of homogeneous texture in a digital picture divides the digital picture into blocks, and for each block generates a feature vector as a function of the data moments. From the feature vectors a gradient for each block is extracted in one of two ways, either using a weighted Euclidean distance between the feature vectors or a probability mass function-based distance metric. The gradients are submitted to morphological preprocessing to remove small bumps in the gradient field. A watershed algorithm is then applied to the preprocessed gradient field to segment the gradient field into a set of spatially connected regions of homogeneous texture.

    摘要翻译: 一种在数字图像中提取均匀纹理区域的方法将数字图像划分为块,并且对于每个块,根据数据时刻生成特征向量。 从特征向量中,以两种方式之一提取每个块的梯度,使用特征向量之间的加权欧几里德距离或基于概率质量函数的距离度量。 梯度被提交到形态预处理以去除梯度场中的小凸起。 然后将分水岭算法应用于预处理梯度场,以将梯度场分割成一组均匀纹理的空间连接区域。

    Method and apparatus for organizing data pertaining to audiovisual content
    78.
    发明授权
    Method and apparatus for organizing data pertaining to audiovisual content 失效
    用于组织有关视听内容的数据的方法和装置

    公开(公告)号:US06675158B1

    公开(公告)日:2004-01-06

    申请号:US09708257

    申请日:2000-11-07

    IPC分类号: G06F1730

    摘要: A method and apparatus for organizing data pertaining to audiovisual content are described. According to one embodiment, an exemplary method for organizing data pertaining to audiovisual content includes defining at least one descriptive list for a descriptive portion of the data pertaining to audiovisual content, defining at least one accessing list for an accessing portion of the data pertaining to audiovisual content, and generating a matrix that connects the accessing list to the descriptive list.

    摘要翻译: 描述用于组织与视听内容有关的数据的方法和装置。 根据一个实施例,用于组织与视听内容相关的数据的示例性方法包括为与视听内容相关的数据的描述部分定义至少一个描述列表,为视听内容的数据的访问部分定义至少一个访问列表 内容,并生成将访问列表连接到描述性列表的矩阵。

    Bit rate control mechanism for digital image and video data compression
    79.
    发明授权
    Bit rate control mechanism for digital image and video data compression 失效
    用于数字图像和视频数据压缩的比特率控制机制

    公开(公告)号:US5995151A

    公开(公告)日:1999-11-30

    申请号:US932681

    申请日:1997-09-18

    摘要: A bit rate control mechanism for a digital image or video compression system estimates a complexity parameter for a current picture, or block of samples, of a video signal as a function of parameters for a prior picture of the video signal, which parameters include a bit rate. From the complexity parameter a quality factor for the current picture is determined and applied to a quantizer to compress the current picture. A complexity pre-processor may also be used to detect scene changes in the video signal prior to estimating the complexity parameter. If there is a scene change detected, then the rate control mechanism is reset prior to estimating the complexity parameter for the first picture in the new scene. Also a video buffer verifier is controlled so that the buffer occupancy at the end of a specified image sequence is at a target value so that looping and editing applications are facilitated.

    摘要翻译: 用于数字图像或视频压缩系统的比特率控制机构估计作为视频信号的先前图像的参数的视频信号的当前图像或采样块的复杂度参数,哪些参数包括位 率。 根据复杂度参数确定当前图像的质量因子并将其应用于量化器以压缩当前图像。 在估计复杂度参数之前,还可以使用复杂度预处理器来检测视频信号中的场景变化。 如果检测到场景变化,则在估计新场景中的第一画面的复杂度参数之前,速率控制机构被重置。 还控制视频缓冲器验证器,使得指定图像序列末尾的缓冲器占用是目标值,从而便于循环和编辑应用。

    High-speed/high-slew-rate tri-modal all bipolar buffer/switch and method
thereof
    80.
    发明授权
    High-speed/high-slew-rate tri-modal all bipolar buffer/switch and method thereof 失效
    高速/高压摆率三态全双极型缓冲器/开关及其方法

    公开(公告)号:US5892376A

    公开(公告)日:1999-04-06

    申请号:US916724

    申请日:1997-08-18

    CPC分类号: H03K17/04213 H03K17/06

    摘要: A high-speed/high-slew-rate tri-modal all bipolar buffer/switch includes a unity-gain amplifier, a voltage source, and a maximum level detector and a minimum level detector adjusting a current source to sink or source current as required to quickly make the output voltage of the switch equal to the input voltage of the switch. The maximum level detector and the minimum level detector compare the output voltage to the input voltage. If the output voltage does not equal the input voltage, the current source acts as either a sink or source to make the output voltage equal the input voltage. In addition, the voltage switch holds a constant d.c. voltage at the output of the switch when the switch is powered down.

    摘要翻译: 高速/高压摆率三态全双极型缓冲器/开关包括单位增益放大器,电压源和最大电平检测器以及最小电平检测器,根据需要调整电流源吸收或源电流 快速使开关的输出电压等于开关的输入电压。 最大电平检测器和最小电平检测器将输出电压与输入电压进行比较。 如果输出电压不等于输入电压,则电流源作为接收端或源极使输出电压等于输入电压。 此外,电压开关保持恒定的直流电压。 当开关断电时,开关输出端的电压。