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    • 31. 发明申请
    • MOVEMENT DETECTION AND CONSTRUCTION OF AN
    • 移动检测和构建“实际现实”图像
    • WO2009046167A1
    • 2009-04-09
    • PCT/US2008/078542
    • 2008-10-02
    • CAPSO VISION, INC.WANG, Kang-Huai
    • WANG, Kang-Huai
    • H04N11/02
    • A61B5/7232A61B1/04A61B1/041A61B5/036H04N19/51H04N19/593H04N19/61
    • A method for intraframe image compression of an image is combined with a method for reducing memory requirements for an interframe image compression. The intraframe image compression includes (a) dividing the image into blocks; (b) selecting a block according to a predetermined sequence; and (c) processing each selected block by: (1) identifying a reference block from previously processed blocks in the image according to an activity metric; and (2) using the reference block, compressing the selected block. The selected block may be compressed by compressing a difference between the selected block and the reference block, where the difference may be offset by a predetermined value. The difference is compressed after determining that an activity metric of the difference block. The activity metric depends on elements of a difference block, which is a block in which elements are each a difference between an element of the current image frame and a corresponding element of the reference frame. The activity metric is a function of the sum of (a) the sum over all rows of all differences between two successive consecutive elements of each row of the difference block; and (b) the sum over all columns of all differences between two consecutive elements of each column of the difference block. The reference block is identified by minimizing a cost function based on the activity metric and either a sum of absolute differences function or a sum of square differences function. The cost function may be a weighted sum of the activity metric and either a sum of absolute differences function or a sum of square differences function, or a weighted sum of the activity function and either a sum of absolute differences function or a sum of square differences function.
    • 用于图像的帧内图像压缩的方法与用于减少帧间图像压缩的存储器要求的方法组合。 帧内图像压缩包括(a)将图像划分成块; (b)根据预定的顺序选择块; 和(c)通过以下步骤处理每个所选择的块:(1)根据活动度量从图像中的先前处理的块中识别参考块; 和(2)使用参考块,压缩所选择的块。 可以通过压缩所选择的块和参考块之间的差来压缩所选择的块,其中差可以偏移预定值。 确定差异块的活动度量后,差异被压缩。 活动度量取决于差分块的元素,差分块是其中元素各自是当前图像帧的元素与参考帧的相应元素之间的差异的块。 活动度量是(a)差分块的每一行的两个连续的连续元素之间的所有差异的所有行之和的和的函数; 和(b)差异块的每列的两个连续元素之间的所有列之间的所有列的总和。 通过基于活动度量和绝对差函数之和或平方差函数之和来最小化成本函数来识别参考块。 成本函数可以是活动度量和绝对差函数之和或平方差函数之和或活动函数的加和和和绝对差函数之和或平方差之和的加权和 功能。
    • 32. 发明申请
    • DETECTION OF WHEN A CAPSULE CAMERA ENTERS INTO OR GOES OUT OF A HUMAN BODY AND ASSOCIATED OPERATIONS
    • 检查胶囊摄像机进入或进入人体和相关操作时
    • WO2008091743A2
    • 2008-07-31
    • PCT/US2008050763
    • 2008-01-10
    • CAPSO VISION INCWANG KANG-HUAI
    • WANG KANG-HUAI
    • A61B1/05
    • A61B1/041A61B5/06A61B5/42H04N17/002
    • A method for detecting a capsule camera entering into or exiting the GI tract, includes (a) taking a first test image under the condition that an illumination system of the capsule camera is disabled; (b) taking a second test image under the same condition as the first test image; (c) comparing selected corresponding pixel values of the first test image and the second test image to determine if a significant change in pixel values has occurred; and (d) upon detecting the significant change in pixel values, determining if the capsule camera has entered or exited the GI tract, and performing operations appropriate to follow such determination. The appropriate operations performed after detecting the capsule camera's exit from the GI tract includes stopping further taking or storing of images and, optionally, activating an audio signal to indicate the capsule camera has exited the GI tract. The appropriate operations performed after detecting the capsule camera's entering into the GI tract includes entering into an imaging mode for a next section of the GI tract, which may be the esophagus.
    • 一种用于检测进入或离开GI道的胶囊相机的方法,包括:(a)在禁用胶囊相机的照明系统的条件下拍摄第一测试图像; (b)在与第一测试图像相同的条件下拍摄第二测试图像; (c)比较所选择的第一测试图像和第二测试图像的相应像素值,以确定是否发生了像素值的显着变化; 以及(d)在检测到像素值的显着变化时,确定胶囊照相机是否进入或退出胃肠道,以及执行适合于遵循这种确定的操作。 在检测胶囊相机离开胃肠道的出口后执行的适当的操作包括停止进一步拍摄或存储图像,并且可选地激活音频信号以指示胶囊相机已经退出胃肠道。 在检测胶囊相机进入胃肠道之后执行的适当操作包括进入可能是食道的胃肠道下一部分的成像模式。
    • 36. 发明申请
    • CAPSULE CAMERA DEVICE WITH MULTI-SPECTRAL LIGHT SOURCES
    • 具有多光源的胶囊相机装置
    • WO2015099749A1
    • 2015-07-02
    • PCT/US2013/077899
    • 2013-12-27
    • WANG, Kang-HuaiCAPSO VISION INC.
    • WANG, Kang-Huai
    • A61B1/04
    • A61B1/041A61B1/00011A61B1/0638A61B1/0684A61B1/31A61B5/062A61B5/073
    • A capsule camera device is disclosed, where the capsule camera device comprises multiple light sources with different spectral characteristics for illuminating lumen walls selectively based on a determined capsule location in the gastrointestinal tract. The capsule camera device includes two or more light sources, an image sensor, a battery, a control module and a housing to enclose the above components in a sealed environment. The control module is used to select one or more selected light sources from said at least two light sources depending on a determined capsule location in the GI tract. Only the selected light source or light sources will be used for illumination in the determined capsule location. The light sources may comprise a white light source and a blue light source with a high spectral concentration at about 415 nm or another light source of different spectral characteristics.
    • 公开了一种胶囊相机装置,其中胶囊相机装置包括具有不同光谱特性的多个光源,用于基于胃肠道中确定的胶囊位置选择性地照射腔壁。 胶囊相机装置包括两个或更多个光源,图像传感器,电池,控制模块和外壳,以在密封环境中包围上述部件。 控制模块用于根据GI道中确定的胶囊位置从所述至少两个光源中选择一个或多个所选择的光源。 只有选定的光源或光源才能用于确定胶囊位置的照明。 光源可以包括白光源和在约415nm处具有高光谱浓度的蓝光源或具有不同光谱特性的另一光源。