Patents Assigned to Dalhouse University
  • Patent number: 8488874
    Abstract: Systems, methods and computer-readable media are provided for controlling a variable-rate sprayer for precision agriculture. Highly efficient digital image processing enables rapid and reliable control of the variable rate sprayer. In one embodiment, image processing uses only a subset of luminance, hue, saturation and intensity textural features to provide rapid image recognition. In another embodiment, an image is decomposed into RGB components and a G is ratio determined. For example, the textural method is useful in growing season where color differentiation is difficult. The G ratio method is useful in early spring and late fall where color differentiation is possible. These rapid computationally light methods enable a mobile sprayer system to identify crop or field conditions in real-time and to dispense an appropriate amount of agrochemical in a specific section of the sprayer boom where the target has been detected as the mobile sprayer advances.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: July 16, 2013
    Assignee: Dalhouse University
    Inventors: Qamar-Uz Zaman, Young Ki Chang, Arnold W. Schumann
  • Publication number: 20120026307
    Abstract: A system and method for real-time measurement of curing energy delivered to a simulated dental restoration from a source of curing energy. The system comprises a detector and a display. The detector measures at a location within the simulated dental restoration the amount of curing energy delivered by the curing energy source. The display displays the measured amount of curing energy in real-time. The system also comprises a temperature detector to measure temperature changes in the oral tissues during curing (teeth and gums). The system also comprises a video camera to record the operator's curing technique.
    Type: Application
    Filed: April 8, 2010
    Publication date: February 2, 2012
    Applicant: Dalhouse University
    Inventor: Richard Bengt Price