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    • 44. 发明授权
    • Low-backlight image visibility enhancement method and system
    • 低背光图像可见度增强方法和系统
    • US08026935B2
    • 2011-09-27
    • US12165263
    • 2008-06-30
    • Pei-Shan TsaiHomer H. ChenChia-Kai Liang
    • Pei-Shan TsaiHomer H. ChenChia-Kai Liang
    • G09G5/10
    • G09G3/3406G09G3/3648G09G2320/0626G09G2320/0646G09G2320/066G09G2330/021G09G2340/16G09G2360/145G09G2360/16
    • A low-backlight image visibility enhancement method and system is proposed for integration to a backlit type of display unit, such as active matrix LCD (Liquid Crystal Display). The proposed method and system firstly converts the image of each video frame into a brightness-based grayscale image; then decomposes the grayscale image into a low-pass base layer and a high-pass detail layer; and then performs a brightness compensation for the base-layer image and a contrast enhancement for the detail-layer image; and finally combines the two image layers into one single image and performs color conversion to the combined image. The resulted image is then used for display on the display unit. This feature allows the display unit to use a low level of backlight to save electrical power consumption while nevertheless allow the image to be displayed with good visibility.
    • 提出了一种低背光图像可见度增强方法和系统,用于集成到背光类型的显示单元,例如有源矩阵LCD(液晶显示器)。 所提出的方法和系统首先将每个视频帧的图像转换成基于亮度的灰度图像; 然后将灰度图像分解为低通基础层和高通细节层; 然后对基底图像进行亮度补偿,并对细节层图像执行对比度增强; 最后将两个图像层组合成一个单一图像,并对组合图像进行颜色转换。 然后将所得到的图像用于显示单元上的显示。 该功能允许显示单元使用低水平的背光来节省电力消耗,同时允许以良好的可见度显示图像。
    • 45. 发明申请
    • 3D Positioning Apparatus and Method
    • 3D定位装置及方法
    • US20100309289A1
    • 2010-12-09
    • US12649029
    • 2009-12-29
    • Homer H. ChenPing-Cheng Chi
    • Homer H. ChenPing-Cheng Chi
    • H04N13/02G06K9/00
    • G06T7/0018G06T7/80
    • A 3D positioning apparatus is used for an object that includes feature points and a reference point. The object undergoes movement from a first to a second position. The 3D positioning apparatus includes: an image sensor for capturing images of the object; and a processor for calculating, based on the captured images, initial coordinates of each feature point when the object is in the first position, initial coordinates of the reference point, final coordinates of the reference point when the object is in the second position, and final coordinates of each feature point. The processor calculates 3D translational information of the feature points using the initial and final coordinates of the reference point, and 3D rotational information of the feature points using the initial and final coordinates of each feature point. A 3D positioning method is also disclosed.
    • 3D定位装置用于包括特征点和参考点的对象。 物体从第一位置移动到第二位置。 3D定位装置包括:用于拍摄对象的图像的图像传感器; 以及处理器,用于基于所捕获的图像计算当所述对象处于所述第一位置时所述每个特征点的初始坐标,所述参考点的初始坐标,所述对象处于所述第二位置时所述参考点的最终坐标;以及 每个特征点的最终坐标。 处理器使用参考点的初始和最终坐标以及使用每个特征点的初始和最终坐标的特征点的3D旋转信息来计算特征点的3D平移信息。 还公开了3D定位方法。
    • 47. 发明申请
    • Digital image stabilization method
    • 数字图像稳定方法
    • US20090096878A1
    • 2009-04-16
    • US12078491
    • 2008-04-01
    • Homer H. ChenChia-kai LiangDavid YehBrian Sung
    • Homer H. ChenChia-kai LiangDavid YehBrian Sung
    • H04N5/91
    • H04N5/144H04N19/109H04N19/154H04N19/17H04N19/172H04N19/51H04N19/52H04N19/86
    • A digital image stabilization method that integrates a digital stabilization device and a digital video encoder is disclosed. The digital stabilization device comprises a determining module for determining background regions, a comparison module for calculating motion vectors, and an adjustment module for adjusting jerky image motion in frames. When there are frame jiggles, the motion vector between an I frame and a P frame is used for motion estimation to get a first motion vector and also define a background region of the P frame. Next, a second motion vector of a B frame is calculated according to the background region to adjust jerky motion of the P frame and the B frame for stabilization. The next P frame then uses the background region of the preceding P frame as its background region.
    • 公开了一种集数字稳定装置和数字视频编码器的数字图像稳定方法。 数字稳定装置包括用于确定背景区域的确定模块,用于计算运动矢量的比较模块和用于调整帧中的抖动图像运动的调整模块。 当存在帧抖动时,I帧和P帧之间的运动矢量用于运动估计以获得第一运动矢量并且还定义P帧的背景区域。 接下来,根据背景区域计算B帧的第二运动矢量,以调整P帧的抖动运动和用于稳定的B帧。 接下来的P帧使用前面的P帧的背景区域作为其背景区域。
    • 48. 发明申请
    • Constant-quality rate control system and algorithm for regions of interest
    • 恒定质量率控制系统和感兴趣区域的算法
    • US20080225945A1
    • 2008-09-18
    • US11889874
    • 2007-08-17
    • Ping-Hao WuHomer H. Chen
    • Ping-Hao WuHomer H. Chen
    • H04B1/66
    • H04N19/59H04N19/115H04N19/124H04N19/147H04N19/17H04N19/33H04N19/61
    • A constant-quality rate control system and algorithm for multiple encoders with a single video source are disclosed. The system comprises a base encoder, a region of interest (ROI) detector, and at least one ROI encoder. The base encoder encodes a base video sequence which is a down-sampled version of a video sequence and sends the base video sequence to a multiplexer. The ROI detector extracts an ROI video sequence from the original video sequence. The ROI encoder encodes the ROI video sequence and sends it to the multiplexer. The ROI encoder uses information obtained during encoding of the base video sequence to improve the encoding of the ROI video sequence. The information of the base video sequence are used to better control the bit-rate and the quality of the ROI video sequence,
    • 公开了具有单个视频源的多个编码器的恒定质量速率控制系统和算法。 该系统包括基本编码器,感兴趣区域(ROI)检测器和至少一个ROI编码器。 基本编码器编码基本视频序列,其是视频序列的下采样版本,并将基本视频序列发送到多路复用器。 ROI检测器从原始视频序列中提取ROI视频序列。 ROI编码器编码ROI视频序列并将其发送到多路复用器。 ROI编码器使用在基本视频序列的编码期间获得的信息来改善ROI视频序列的编码。 基本视频序列的信息用于更好地控制ROI视频序列的比特率和质量,
    • 50. 发明授权
    • Data reduction and representation method for graphic articulation parameters (GAPS)
    • 图形关节参数(GAPS)的数据简化和表示方法
    • US06429870B1
    • 2002-08-06
    • US09638995
    • 2000-08-14
    • Homer H. ChenHai Tao
    • Homer H. ChenHai Tao
    • G06T1500
    • G06T9/001A63F2300/6607G06T13/00H04N19/27H04N19/30H04N19/61H04N19/619
    • A data reduction and representation method reduces the number of graphic articulation parameters (GAPs) that must be stored or transmitted to animate an object. A number of GAPs are identified that can be interpolated from other GAPs. A directed graph is created which depicts the identities of the “derived” GAPs, the “defining” GAPs from which derived GAPs can be interpolated, and the relationship between them. The GAPs reside at nodes on the graph which are interconnected with directed links that indicate the “parent” to “child” relationships, with each link representing an interpolation function which defines how the derived GAPs are interpolated from the defining GAPs. The graph and interpolation functions are conveyed to a decoder. Frames containing defining GAPs are then sent to the decoder, which performs the interpolations as directed by the graph and using the interpolation functions to reconstruct the derived GAPs.
    • 数据简化和表示方法减少了必须存储或传输给动画对象的图形关节参数(GAP)的数量。 识别出可以从其他GAP内插的一些GAP。 创建了一个有向图,其中描绘了“派生”GAP的身份,“定义”GAP可以从中导出GAP,以及它们之间的关系。 GAP驻留在图形上的节点上,这些节点与指向“子”关系的“父”的定向链接互连,每个链接表示内插函数,该函数定义了如何从定义的GAP插值导出的GAP。 图形和内插函数被传送到解码器。 然后将包含定义GAP的帧发送到解码器,解码器按照图形的指示执行内插,并使用插值函数来重建派生的GAP。