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    • 6. 发明申请
    • DATA CORESET COMPRESSION
    • 数据磁带压缩
    • US20130275400A1
    • 2013-10-17
    • US13861697
    • 2013-04-12
    • Daniela RusDan Feldman
    • Daniela RusDan Feldman
    • G06F17/30
    • G06F17/30153H03M7/3064
    • An approach to compression of a large (n point or samples) data set has a combination of one or more desirable technical properties: for a desired level of accuracy (ε), the number of compressed points (a “coreset”) representing the original data is O(log n); the level of accuracy comprises a guaranteed bound expressed as multiple of error of an associated line simplification of the data set; for a desired level of accuracy and a complexity (e.g., number k of optimal line segments) of the associated line simplification, the computation time is O(n); and for a desired level of accuracy (c) and a complexity of the associated line simplification, the storage required for the computation is O(log n).
    • 压缩大(n点或样本)数据集的方法具有一个或多个期望的技术性质的组合:对于期望的精度水平(ε),代表原始数据的压缩点数(“核心集”) 数据为O(log n); 精度级别包括表示为数据集的相关线路简化的误差的倍数的保证界限; 对于相关线路简化的期望的精度水平和复杂度(例如,最佳线段的数量k),计算时间为O(n); 并且为了达到期望的准确度(c)和相关线路简化的复杂性,计算所需的存储是O(log n)。
    • 8. 发明申请
    • FLEXIBLE ACTUATOR BASED ON SHAPE MEMORY ALLOY SHEET
    • 基于形状记忆合金板的柔性执行器
    • US20110173970A1
    • 2011-07-21
    • US12896184
    • 2010-10-01
    • Eduardo R. Torres-JaraDaniela Rus
    • Eduardo R. Torres-JaraDaniela Rus
    • F03G7/06
    • F03G7/06
    • A flexible unit-cell actuator includes a shape memory alloy sheet having a fold between adjacent legs in one state and a heat source that upon activation concentrates heating of the shape memory alloy sheet at the fold relative to the legs to change the fold between one state and another state. The heat source may include resistive heating due to an electric current passing through the shape memory alloy sheet. The fold typically includes a reduced cross-sectional area and may include slits to increase electrical resistance at the fold relative to the adjacent legs. An actuator array includes a plurality of flexible unit-cell actuators formed in a sheet, each unit-cell actuator mechanically coupled to at least one other unit-cell actuator at a coupling region. Plural unit-cell actuators may be mechanically coupled in series, in parallel, or both, may be electrically connected in series, and may move along a defined curve or surface. A linear or curvilinear actuator includes a guide, a plurality of bearings or support elements slidable along the guide, and an array of actuators coupled between adjacent bearings and circumferentially about the bearings. An actuator includes a plurality of segments fanning from a hinge and shape memory alloy actuators coupled between adjacent segments to cause the segments to fan in an out about the hinge.
    • 柔性单电池致动器包括形状记忆合金薄片,其具有处于一个状态的相邻支腿之间的折叠部分,以及热源,其在激活时将形状记忆合金薄片的加热集中在相对于腿部的折叠处,以将折叠改变为一个状态 和另一个状态。 热源可以包括由于通过形状记忆合金薄片的电流而产生的电阻加热。 折叠通常包括减小的横截面积并且可以包括狭缝以增加相对于相邻腿部的折叠处的电阻。 致动器阵列包括形成在片材中的多个柔性单元电池致动器,每个单元电致动器在耦合区域机械耦合到至少一个其它单元电池致动器。 多个单元电池致动器可以串联机械耦合,并联或两者可以串联电连接,并且可以沿着限定的曲线或表面移动。 线性或曲线致动器包括引导件,可沿着引导件滑动的多个轴承或支撑元件,以及联接在相邻轴承之间并围绕轴承周向的致动器阵列。 致动器包括从铰链扇形的多个段和耦合在相邻段之间的形状记忆合金致动器,以使段能围绕铰链扇出。
    • 9. 发明授权
    • Data coreset compression
    • 数据内核集压缩
    • US09286312B2
    • 2016-03-15
    • US13861697
    • 2013-04-12
    • Daniela RusDan Feldman
    • Daniela RusDan Feldman
    • G06F7/00G06F17/30H03M7/30
    • G06F17/30153H03M7/3064
    • An approach to compression of a large (n point or samples) data set has a combination of one or more desirable technical properties: for a desired level of accuracy (ε), the number of compressed points (a “coreset”) representing the original data is O(log n); the level of accuracy comprises a guaranteed bound expressed as multiple of error of an associated line simplification of the data set; for a desired level of accuracy and a complexity (e.g., number k of optimal line segments) of the associated line simplification, the computation time is O(n); and for a desired level of accuracy (c) and a complexity of the associated line simplification, the storage required for the computation is O(log n).
    • 压缩大(n点或样本)数据集的方法具有一个或多个期望的技术特性的组合:对于期望的精度水平(“eG”),代表 原始数据为O(log n); 精度级别包括表示为数据集的相关线路简化的误差的倍数的保证界限; 对于相关线路简化的期望的精度水平和复杂度(例如,最佳线段的数量k),计算时间为O(n); 并且为了达到期望的准确度(c)和相关线路简化的复杂性,计算所需的存储是O(log n)。
    • 10. 发明授权
    • Adaptive illumination for color-corrected underwater imaging
    • 自适应照明用于色彩校正水下成像
    • US08106944B2
    • 2012-01-31
    • US11624369
    • 2007-01-18
    • Iuliu VasilescuAlexander BahrCarrick DetweilerDaniela Rus
    • Iuliu VasilescuAlexander BahrCarrick DetweilerDaniela Rus
    • H04N7/18
    • G03B13/00H04N5/2354H04N9/04
    • Described are a method and an apparatus for color-corrected underwater imaging. A range to an underwater object to be imaged is determined and control values are selected according to the range. Control values are predetermined for a number of ranges according to an optimization of a color quality factor for each range based on the spectra of the optical sources used for illumination and the wavelength-dependent optical transmission of the water for the range. The optical power of each optical source is controlled according to a respective one of the selected control values. Advantageously, an acquired image requires no color correction as the adaptive illumination compensates for the wavelength-dependent losses in the light propagation path from the optical sources to the object and from the object to the imaging device.
    • 描述了用于色彩校正的水下成像的方法和装置。 确定要成像的水下物体的范围,并根据该范围选择控制值。 根据用于照明的光源的光谱和用于该范围的水的波长依赖性光透射,根据对于每个范围的颜色品质因子的优化,控制值是预定的。 每个光源的光功率根据所选择的控制值中的相应一个来控制。 有利地,获得的图像不需要颜色校正,因为自适应照明补偿从光源到物体和从物体到成像装置的光传播路径中的波长相关损耗。