COMPUTING DEVICE AND METHOD OF DETERMINING BORDER POINTS FOR MEASURING IMAGES OF OBJECTS
First Claim
1. A computerized method of determining border points for measuring an image of an object, the method being executed by at least one processor of a computing device and comprising:
- (a) acquiring grayscale values of pixel points in the image being measured by the at least one processor;
(b) computing definition values of the pixel points according to the grayscale values by the at least one processor;
(c) constructing a line which intersects with the image being measured, and obtaining the definition values of the pixel point values in the lines by the at least one processor;
(d) determining a location range of a border point of the image being measured using the definition values of the pixel point values in the line by the at least one processor;
(e) determining the border point from the location range by the at least one processor;
(f) repeating step (c) to (e) until all border points of the image being measured has been determined by the at least one processor; and
(g) fitting a border line of the image being measured using the border points, and outputting the border line by the at least one processor.
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Accused Products
Abstract
In a method of determining border points for measuring an image of an object using a computing device, grayscale values of pixel points in an image being measured are acquired, and definition values of the pixel points are computed according to the grayscale values. A line which intersects with the image being measured is constructed, and the definition values of the pixel point values in the lines are obtained. A location range of a border point of the image being measured is determined according to the definition values of the pixel point values in the line, and the border point is selected from the location range. A border line of the image being measured is fitted using the border points.
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Citations
18 Claims
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1. A computerized method of determining border points for measuring an image of an object, the method being executed by at least one processor of a computing device and comprising:
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(a) acquiring grayscale values of pixel points in the image being measured by the at least one processor; (b) computing definition values of the pixel points according to the grayscale values by the at least one processor; (c) constructing a line which intersects with the image being measured, and obtaining the definition values of the pixel point values in the lines by the at least one processor; (d) determining a location range of a border point of the image being measured using the definition values of the pixel point values in the line by the at least one processor; (e) determining the border point from the location range by the at least one processor; (f) repeating step (c) to (e) until all border points of the image being measured has been determined by the at least one processor; and (g) fitting a border line of the image being measured using the border points, and outputting the border line by the at least one processor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computing device, comprising:
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a storage device; at least one processor; and one or more modules that are stored in the storage device, and are executed by the at least one processor, the one or more modules comprising instructions to; acquire grayscale values of pixel points in an image being measured of an object; compute definition values of the pixel points according to the grayscale values; construct a line which intersects with the image being measured, and obtain the definition values of the pixel point values in the lines; determine a location range of a border point of the image being measured using the definition values of the pixel point values in the line; determine the border point from the location range; and fit a border line of the image being measured using the border points, and output the border line. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A non-transitory storage medium having stored thereon instructions that, when executed by a processor of a computing device, causes the processor to perform a method of determining border points for an image being measured of an object, wherein the method comprises:
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(a) acquiring grayscale values of pixel points in the image being measured; (b) computing definition values of the pixel points according to the grayscale values; (c) constructing a line which intersects with the image being measured, and obtaining the definition values of the pixel point values in the lines; (d) determining a location range of a border point of the image being measured using the definition values of the pixel point values in the line; (e) determining the border point from the location range; (f) repeating step (c) to (e) until all border points of the image being measured has been determined; and (g) fitting a border line of the image being measured using the border points, and outputting the border line. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification