Video codec and motion estimation method

    公开(公告)号:US09961354B2

    公开(公告)日:2018-05-01

    申请号:US15584572

    申请日:2017-05-02

    CPC classification number: H04N19/433 H04N19/51

    Abstract: The invention provides a video codec. In one embodiment, the video codec is coupled to an outer memory storing a reference frame, and comprises an interface circuit, an in-chip memory, a motion estimation circuit, and a controller. The interface circuit obtains in-chip data from the reference frame stored in the outer memory. The in-chip memory stores the in-chip data. The motion estimation circuit retrieves search window data from the in-chip data with a search window, and performs a motion estimation process on a current macroblock according to the search-window data. The controller shifts the location of the search window when the current macroblock is shifted, marks a macroblock shifted out from the search window as an empty macroblock, and controls the interface circuit to obtain an updated macroblock for replacing the empty macroblock in the in-chip memory from the reference frame stored in the outer memory.

    Techniques for improved feature detection
    8.
    发明授权
    Techniques for improved feature detection 有权
    改进特征检测技术

    公开(公告)号:US09317768B2

    公开(公告)日:2016-04-19

    申请号:US13625962

    申请日:2012-09-25

    CPC classification number: G06K9/46

    Abstract: Techniques for improved feature detection are described. In one embodiment, for example, a device may include a processor circuit and a feature detection module, and the feature detection module may be operative on the processor circuit to perform a first feature detection iteration for a graphics information element using an integral pixel value array, determine a scaling factor, recalculate the integral pixel value array based on the scaling factor, and perform a second feature detection iteration for the graphics information element using the recalculated integral pixel value array. Other embodiments are described and claimed.

    Abstract translation: 描述了用于改进特征检测的技术。 在一个实施例中,例如,设备可以包括处理器电路和特征检测模块,并且特征检测模块可以在处理器电路上操作,以使用积分像素值阵列来执行图形信息元素的第一特征检测迭代 确定缩放因子,基于缩放因子重新计算积分像素值阵列,并且使用重新计算的积分像素值阵列对图形信息元素执行第二特征检测迭代。 描述和要求保护其他实施例。

    Proposal region filter for digital image processing

    公开(公告)号:US11080551B2

    公开(公告)日:2021-08-03

    申请号:US16607212

    申请日:2017-05-22

    Inventor: Liu Yang

    Abstract: An embodiment of a computer-implemented method generates a filtered set of region proposals for a digital image processing network. The method comprises generating a keypoint count map for a digital image, wherein the keypoint count map indicates how many keypoints have been detected near different pixels in the digital image. The method also comprises generating a keypoint integral image, wherein the keypoint integral image comprises a summed area table that is based on the keypoint count map. The method also comprises generating object existence indicators for an initial region set for the digital image based on the keypoint integral image, and extracting a keypoint-filtered region set from the initial region set based on the object existence indicators. The method may also comprise using the keypoint-filtered region set as region proposal input for an object proposal subsystem. Other embodiments are described and claimed.

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