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    • 15. 发明授权
    • Apparatus and method for determining boring direction when boring
underground
    • 在地下钻孔时确定钻孔方向的装置和方法
    • US5880680A
    • 1999-03-09
    • US759656
    • 1996-12-06
    • John C. WisehartAustin L. WidenerJian Jin
    • John C. WisehartAustin L. WidenerJian Jin
    • E21B47/024G01V3/00
    • E21B47/024
    • A guidance module for an underground horizontal boring assembly. The module determines the pitch angle of the boring tool independent of roll using a single accelerometer sensor. The accelerometer sensor has a single sensitive axis which is aligned parallel to, and preferably coaxial with, the longitudinal axis of the boring tool. The accelerometer sensor is calibrated to obtain a temperature offset and a gain compensating gain factor. Data samples are read from the accelerometer sensor while the boring tool is rotating. The temperature is read from the temperature sensor. The data samples from the accelerometer sensor and the temperature from the temperature sensor are transmitted to a processor. The processor applies simple average filtering to the accelerometer data samples to get an average result, and adjusts the average result for gain. The average result is adjusted for the temperature offset and for the gain compensating gain factor. The average result then can be adjusted for an optional roll angle offset. The pitch angle is determined either from a lookup table or from the arcsin value of the quantity of the average result minus the temperature offset divided by the gain compensating gain factor.
    • 地下水平镗孔总成的引导模块。 该模块使用单个加速度传感器确定镗刀独立于滚子的俯仰角。 加速度计传感器具有与镗孔工具的纵向轴线平行并且优选与轴向对准的单个敏感轴。 校准加速度计传感器以获得温度偏移和增益补偿增益因子。 钻孔工具旋转时,从加速度传感器读取数据样本。 从温度传感器读取温度。 来自加速度计传感器的数据样本和来自温度传感器的温度被传送到处理器。 处理器对加速度计数据样本应用简单的平均滤波以获得平均结果,并调整增益的平均结果。 对于温度偏移和增益补偿增益因子调整平均结果。 然后可以对可选的滚动角偏移量调整平均结果。 俯仰角由查找表或平均值结果的arcsin值减去温度偏移除以增益补偿增益因子来确定。
    • 18. 发明申请
    • METHOD AND DEVICE FOR PROCESSING OF AN IMAGE
    • 用于处理图像的方法和装置
    • US20140126834A1
    • 2014-05-08
    • US14128626
    • 2012-06-19
    • Wen Fei JiangJian JinZhibo Chen
    • Wen Fei JiangJian JinZhibo Chen
    • G06T5/00
    • G06T5/00G06T5/002G06T2207/20192H04N1/4092
    • The invention addresses the problem that traditional Total Variation only enforces the horizontal and vertical intensity continuity and thus fails to reconstruct oblique edges well. In an embodiment, Directional Total Variation is defined which supports multiple gradient directions. It first pre-processes the image and determines the direction of edges/texture; Directional TV is calculated based on the gradients along the determined direction and its orthogonal direction. By utilizing adaptive weights to different directions in the regularization, Directional TV is capable of preserving edges independent from their orientation nicely. Thus, Directional TV regularization based image denoising, compression or super resolution tend to obtain better quality.
    • 本发明解决了传统的总变化仅强制水平和垂直强度连续性并因此不能很好地重建倾斜边缘的问题。 在一个实施例中,定义了方向总变化,其支持多个梯度方向。 它首先预处理图像并确定边缘/纹理的方向; 定向电视是根据沿着确定方向及其正交方向的梯度计算的。 通过在正规化中利用不同方向的自适应权重,定向电视能够很好地保持与其方向无关的边缘。 因此,基于定向电视正则化的图像去噪,压缩或超分辨率往往获得更好的质量。