Apparatus and method for visualizing periodic motions in mechanical components
AssigneeRdi Technologies, Inc.
InventorsJeffrey R. Hay, Mark William Slemp
Life of this patent
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Abstract
A non-contacting system for visualizing and analyzing periodic movements in machinery includes at least one video acquisition device that acquires sampling data as a video comprising a plurality of video image frames and a data analysis system including processor and memory, and a computer program operating in the processor to filter movements depicted in the video to a specific frequency to normalize the phase in a plurality of objects in the video representing parts or components of the machinery, to compare the movements of such objects which in some embodiments provides for construction of a modified video to visually exaggerate the apparent movement of the at least one of the plurality of objects.
Claims22
A system for evaluating a moving object undergoing periodic motion, employing at least one video acquisition device, the system comprising:
- a processor configured to cause the video acquisition device to acquire sampling data, wherein the sampling data comprises a video recording of a scene having a plurality of image frames of the moving object, wherein an image frame is divisible into a plurality of pixels;
- and
- a computer program operating in the processor to:
- operate on one or more pixel intensities at a selected frequency of motion present in the video recording;
- automatically calculate a phase value for one or more pixels at the selected frequency and implement a normalizing phase adjustment, wherein the normalizing phase adjustment is dependent on a direction of displacement of the moving object;
- and
- display phase values that reflect the normalized applied.
A method of visualizing and studying motion of a moving object, comprising:
- acquiring a video recording of a scene that contains the moving object, wherein the video recording comprises a plurality of image frames of the moving object and wherein an image frame is divisible into a plurality of pixels;
- selecting a frequency of motion present in the video recording;
- automatically performing a normalizing phase adjustment upon measured phase values of pixel intensity, wherein the normalizing phase adjustment is dependent on a direction of displacement of the moving object;
- displaying a modified image frame containing the moving object;
- and
- superimposing in the recorded video at least one modified phase value associated with the filtered motion.
A method of visualizing and studying motion of a moving object, comprising:
- acquiring a video recording of a scene that contains the moving object, wherein the video recording comprises a plurality of image frames of the moving object and wherein an image frame is divisible into a plurality of pixels;
- accentuating at least one directional edge within an image frame by applying an operator to the image frame, wherein the at least one directional edge emphasizes a directional motion in the image frame;
- displaying a modified image frame in the video recording containing the moving object;
- and
- superimposing in the video recording at least one modified phase value associated with the moving object.
Dependencies are inferred from the claim text.