Patents Assigned to DRVision Technologies LLC
  • Patent number: 7463773
    Abstract: An initial search method uses the input image and the template to create an initial search result output. A high precision match uses the initial search result, the input image, and the template to create a high precision match result output. The high precision match method estimates high precision parameters by image interpolation and interpolation parameter optimization. The method also performs robust matching by limiting pixel contribution or pixel weighting. An invariant high precision match method estimates subpixel position and subsampling scale and rotation parameters by image interpolation and interpolation parameter optimization on the log-converted radial-angular transformation domain.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: December 9, 2008
    Assignee: DRVision Technologies LLC
    Inventors: Shih-Jong J. Lee, Seho Oh
  • Patent number: 7430320
    Abstract: A region-guided boundary refinement method for object segmentation in digital images receives an initial object regions of interest and performs directional boundary decomposition using the initial object regions of interest to generate a plurality of directional object boundaries output. A directional border search is performed using the plurality of directional object boundaries to generate base border points output. A base border integration is performed using the base border points to generate base borders output. In addition, a boundary completion is performed using the base borders having boundary refined object regions of interest output. A region-guided boundary completion method for object segmentation in digital images receives an initial object regions of interest and base borders. It performs boundary completion using the initial object regions of interest and the base borders to generate boundary refined object regions of interest output.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: September 30, 2008
    Assignee: DRVision Technologies LLC
    Inventors: Shih-Jong J. Lee, Tuan Phan