Patents by Inventor Yiyu Cai

Yiyu Cai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160247067
    Abstract: A method is proposed for automatically generating a crane lifting path describing the motion of a crane. The method includes: laser scanning a plant to generate one or more point clouds; using the point clouds to identify objects to be lifted by the crane; rasterizing the laser scanned point clouds to generate digital data describing the plant and in a format for input to a Graphics Processing Unit (GPU); and iteratively optimizing a crane lifting path, including using the GPU and the digital data to detect collisions between one or more cranes and the plant if the crane follows the crane lifting path.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 25, 2016
    Inventors: Yiyu CAI, Panpan CAI, Chandrasekara INDHUMATHI, Jianmin ZHENG, Nadia M. THALMANN, Peng WONG, Teng Sam LIM, Yi GONG
  • Publication number: 20090233724
    Abstract: A virtual theme park has attractions which are based upon protein chains at large scale, the users being able to use these protein tracks with virtual transports such as roller coasters, water rides, ski rides, skate scooters, skate boards, racing cars, bicycles, motorcycles, etc. The proteins are those proteins including pathogens which representing diseases of animals or humans. The virtual riders may be presented as the disease vector or target, for instance a mosquito to navigate a dengue fever related protein, a cow to navigate a BSE prion. The motion effects and sound effects are modelled based on the protein structure.
    Type: Application
    Filed: September 8, 2004
    Publication date: September 17, 2009
    Inventors: Yiyu Cai, Baifang Lu
  • Patent number: 7371067
    Abstract: The invention provides a system for virtually designing a medical device conformed for use with a specific patient. Using the system, a three-dimensional geometric model of a patient-specific body cavity or lumen is reconstructed from scanned volume images such as obtained x-rays, magnetic resonance imaging (MRI), computer tomography (CT), ultrasound (US), angiography or other imaging modalities. Knowledge of the physical properties of the cavity/lumen is obtained by determining the relationship between image density and the stiffness or elasticity of tissues in the body cavity or lumen and is used to model interactions between a simulated device and a simulated body cavity or lumen.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: May 13, 2008
    Assignees: The Johns Hopkins University School of Medicine, Agency for Science, Technology & Research (A*Star)
    Inventors: James H. Anderson, William R. Brody, Chee-Kong Chui, Yiyu Cai, Yaoping Wang, Wieslaw L. Nowinski
  • Patent number: 6538634
    Abstract: An apparatus for use in simulated image guided surgery comprises a positional transducer, clamping means located proximate to the transducer, and a processor. The transducer is responsive to a thin flexible member that can be manipulated by a user, and produces signals representative of displacement and rotation of the thin flexible member. The clamping means responds to a controlling signal to apply a predetermined variable clamping force to the flexible member. The processor receives these displacement and rotation signals, and is programmed to plot the path of the flexible member therefrom as it is manipulated by the user. Additionally, the processor produces the controlling signal to the clamping means in response to the instantaneous position along the path. The processor may be coupled to a display device for displaying an image of the instantaneous position of the flexible wire therealong, or other information. The invention also includes a related method for the simulation of image guided surgery.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 25, 2003
    Assignees: Kent Ridge Digital Labs, The National University of Singapore, Tan Tock Seng Hospital Pte Ltd.
    Inventors: Chee-Kong Chui, Percy Chen, Yaoping Wang, Marcelo H. Ang, Jr., Yiyu Cai, Koon-Hou Mak
  • Publication number: 20020168618
    Abstract: This invention provides a system and method for computer simulation of image-guided diagnostic and therapeutic procedures such as vascular catheterization, angioplasty, stent, coil and graft placement, embolotherapy and drug infusion therapy. In a particularly preferred aspect, the system is configured to resemble a cardiovascular catheterization laboratory where interventional radiology procedures are performed. A first user can interactively manipulate therapeutic catheters, guidewires and other medical devices in real-time while viewing patient-specific medical image data sets in a manner similar to that encountered in a clinical procedure.
    Type: Application
    Filed: March 5, 2002
    Publication date: November 14, 2002
    Applicant: Johns Hopkins University School of Medicine
    Inventors: James H. Anderson, William R. Brody, Chee-Kong Chui, Xin Ma, Yaoping Wang, Yiyu Cai, Wieslaw L. Nowinski
  • Publication number: 20020137014
    Abstract: The invention provides a system for virtually designing a medical device conformed for use with a specific patient. Using the system, a three-dimensional geometric model of a patient-specific body cavity or lumen is reconstructed from scanned volume images such as obtained x-rays, magnetic resonance imaging (MRI), computer tomography (CT), ultrasound (US), angiography or other imaging modalities. Knowledge of the physical properties of the cavity/lumen is obtained by determining the relationship between image density and the stiffness or elasticity of tissues in the body cavity or lumen and is used to model interactions between a simulated device and a simulated body cavity or lumen.
    Type: Application
    Filed: March 5, 2002
    Publication date: September 26, 2002
    Inventors: James H. Anderson, William R. Brody, Chee-Kong Chui, Yiyu Cai, Yaoping Wang, Wieslaw L. Nowinski