Abstract:
Systems, methods, and apparatus for performing surface type detection in connection with locate and marking operations. In some embodiments, one or more sensors (e.g., radiation sensors, acoustic sensors, color sensors, light sensors, etc.) may be employed to collect information regarding a surface, such as a ground surface on which marking material is to be dispensed to mark the presence or absence of an underground facility. The collected sensor data may be analyzed to provide an estimate of a type of the surface that is being sensed. For example, a still-image or video camera may be used as a sensor that detects visible light reflecting from a surface. One or more images of the surface captured by the camera may be analyzed using some suitable image analysis software to identify one or more characteristics (e.g., color, intensity, randomness, presence/absence of lines, etc.) that may be indicative of a surface type. As another example, one or more radiation sensors may be employed to measure an amount of electromagnetic radiation reflected by the sensed surface one or more selected wavelengths or ranges of wavelengths to identify a spectral signature that may also be indicative of a surface type.
Abstract:
An apparatus equipped with an electronic camera, lensed optics, and a visual display in communication with the optics. An analog or digital video signal is conveyed to an operator of the apparatus through the visual display. The apparatus includes an embedded processor to track the orientation and position of the apparatus. Orientation and position information of the apparatus is used to dynamically recalculate display information. In addition, the apparatus may be in communication with a remote device having digital camera optics. Orientation and position information of the apparatus may be conveyed to the remote device to alter the orientation and position of the associated electronic camera optics. Accordingly, data conveyed to the operator of the apparatus is in relation to the orientation and position of the apparatus and/or the associated orientation and position of the remote device.
Abstract:
Marking material is dispensed onto a target surface using a marking device, and one or more images are captured by one or more camera systems attached to the marking device. The image(s) is/are analyzed to determine tracking information indicative of the a motion or an orientation of the marking device. The tracking information is analyzed to determine marking information relating to the dispensed marking material. In one example, the image(s) is/are analyzed to obtain an optical flow plot indicative of a path on the target surface traversed by the marking device. One or more reference plots respectively representing a plurality of reference marking patterns are compared to one or more portions of the optical flow plot to identify at least one reference marking pattern that substantially matches the portion(s) of the optical flow plot.