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    • 83. 发明申请
    • Super-resolution overlay in multi-projector displays
    • 超级分辨率覆盖在多投影机显示屏
    • US20040239885A1
    • 2004-12-02
    • US10827176
    • 2004-04-19
    • University of Kentucky Research Foundation
    • Christopher O. JaynesDivya T. Ramakrishnan
    • G03B021/26
    • H04N9/3147
    • A technique, associated system and computer executable program code, for projecting a superimposed image onto a target display surface under observation of one or more cameras. A projective relationship between each projector being used and the target display surface is determined using a suitable calibration technique. A component image for each projector is then estimated using the information from the calibration, and represented in the frequency domain. Each component image is estimated by: Using the projective relationship, determine a set of sub-sampled, regionally shifted images, represented in the frequency domain; each component image is then composed of a respective set of the sub-sampled, regionally shifted images. In an optimization step, the difference between a sum of the component images and a frequency domain representation of a target image is minimized to produce a second, or subsequent, component image for each projector. Here, a second set of frequency domain coefficients for use in producing a frequency domain representation of the second component image for each projector is identified. Taking the inverse Fourier transform of the frequency domain representation of the second component image, converts the information into a spatial signal that is placed into the framebuffer of each component projector and projected therefrom to produce the superimposed image.
    • 一种技术,相关系统和计算机可执行程序代码,用于在一个或多个相机的观察下将叠加的图像投影到目标显示表面上。 使用合适的校准技术确定使用的每个投影仪与目标显示表面之间的投影关系。 然后使用来自校准的信息来估计每个投影仪的分量图像,并在频域中表示。 每个分量图像通过以下方式估计:使用投影关系,确定在频域中表示的一组亚采样,区域偏移图像; 然后,每个分量图像由相应的一组亚采样的区域偏移的图像组成。 在优化步骤中,最小化分量图像的总和与目标图像的频域表示之间的差以产生每个投影仪的第二或后续分量图像。 这里,识别用于产生每个投影仪的第二分量图像的频域表示的第二组频域系数。 采用第二分量图像的频域表示的傅立叶逆变换将信息转换成放置在每个分量投影仪的帧缓冲器中并从其投影的空间信号,以产生叠加的图像。
    • 85. 发明申请
    • Methods and apparatus for in vivo identification and characterization of vulnerable atherosclerotic plaques
    • 用于体内鉴定和表征易受损的动脉粥样硬化斑块的方法和装置
    • US20010047137A1
    • 2001-11-29
    • US09768920
    • 2001-01-24
    • University of Kentucky Research Foundation, Kentucky Corporation
    • Pedro MorenoRobert A. LodderWilliam O'ConnorJames E. Muller
    • A61B006/00
    • A61B5/0086A61B5/0075A61B2017/22001
    • Methods and apparatus for analyzing the chemical composition of vulnerable plaques with an intravascular catheter having a near-infrared light source, a fiber-optic probe, a mechanism for directing the light from the light source into a blood vessel, and detectors for detecting light reflected or scattered by the tissue. The light source may be a tunable laser, and may transmit an incident beam having a wavelength ranging from 1400 to 4100 nm. A computer may be included to receive and process the spectral data in the analysis of the vulnerable plaques. A catheter system may be configured to provide near-IR spectrometric imaging of arteries to non-destructively locate and determine lipid pool and fibrous cap size and composition. Additionally, mediators and cellular components may be also determined that are typically associated with vulnerable plaques which have an increased risk of rupture. The lipid pool, fibrous cap, and inflammatory response may serve as an in vivo marker for vulnerable atherosclerotic plaques. Methods are further provided for prospectively identifying and characterizing vulnerable plaques which may include the steps of focusing near-IR light onto a blood vessel wall; detecting the scattered light in the region; and analyzing the resulting spectra across the full preselected wavelength range, particularly in the ranges that include identifying peaks for vulnerable plaque constituents.
    • 用具有近红外光源的血管内导管分析易损斑块的化学成分的方法和装置,光纤探针,用于将来自光源的光引导到血管中的机构和用于检测反射的光的检测器 或被组织分散。 光源可以是可调谐激光器,并且可以传输波长范围为1400至4100nm的入射光束。 可以包括计算机以在分析脆弱斑块中接收和处理光谱数据。 导管系统可以被配置为提供动脉的近红外光谱成像以非破坏性地定位和确定脂质池和纤维帽的尺寸和组成。 此外,还可以确定通常与具有增加的破裂风险的易损斑块相关的介体和细胞组分。 脂质池,纤维帽和炎症反应可以用作脆弱的动脉粥样硬化斑块的体内标记物。 还提供了用于前瞻性地鉴定和表征脆弱斑块的方法,其可以包括将近红外光聚焦到血管壁上的步骤; 检测该区域的散射光; 并且在整个预选波长范围内分析所得到的光谱,特别是在包括识别脆弱斑块成分的峰的范围内。