Method and system for measuring table sag
AssigneeGeneral Electric Company
InventorsEdward Henry Chao, Wolfgang Just, Ariel Friedlander
Life of this patent
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Abstract
A method for measuring table sag of a table may include utilizing images of an unloaded table and a loaded table, plotting pixel values for a range of pixels for each image within a particular column, identifying a pixel within each plot that has a highest pixel value, calculating a difference between the identified pixel row numbers, and converting the difference into a measurement of table sag. A storage medium encoded with machine-readable computer program code for measuring table sag of a table may include instructions for causing a computer to implement the method. A computer for use in an imaging system may utilize digital images for the measurement of table sag and an imaging system may include such a computer.
Claims23
A method for measuring table sag of a table, the method comprising:
- identifying pixel values of pixels from a column in a loaded table image and in an unloaded table image;
- and,
- calculating a difference between pixel row numbers having highest pixel values in the loaded table image and unloaded table image for determining how many pixel rows the table has sagged from the unloaded image to the loaded image.
A storage medium encoded with machine-readable computer program code for measuring table sag of a table, the storage medium including instructions for causing a computer to implement a method comprising:
- identifying pixel values of pixels from a column in a loaded table image and in an unloaded table image;
- and,
- calculating a difference between pixel row numbers having highest pixel values in the loaded table image and unloaded table image for determining how many pixel rows the table has sagged from the unloaded image to the loaded image.
A computer for use in an imaging system, the computer comprising a computer readable medium having computer readable program code means embodied in the medium, the computer readable program code means for:
- receiving digital images from an image reconstructor in the imaging system;
- and
- calculating, using information provided from the digital images received by the computer, table sag of a support table used within the imaging system;
- wherein the calculated table sag is usable for correcting an original image of the digital images and eliminating the table sag in the images.
An imaging system comprising:
- an x-ray source;
- an x-ray detector array for receiving an x-ray beam from the x-ray source;
- a data acquisition system for receiving signals from the x-ray detector array;
- an image reconstructor for receiving signals from the data acquisition system and for generating digital images;
- a table for supporting a person or object adjacent the x-ray source;
- and,
- a computer for receiving the digital images from the image reconstructor, wherein table sag is calculated only within the computer using information provided from the digital images.
Dependencies are inferred from the claim text.