METHOD FOR QUANTIFYING THE EFFECTIVE HEIGHT OF FIBERS EMANATING FROM A SURFACE
First Claim
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1. A method for measuring the effective height of a fiber emanating from the surface of a web substrate, the web substrate having a machine direction, a cross-machine direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both said machine and cross-machine directions, said method comprising the steps of:
- a) providing an image file of said web substrate, said image file containing at least a two-dimensional image of said web substrate wherein at least one of said at least two-dimensions comprises at least a component of said Z-direction;
b) establishing a Z-direction baseline having a length L and being generally co-planar to said Z-direction, said Z-direction baseline having a component orthogonal to said Z-direction;
c) determining a pixel intensity of a first pixel disposed within said length, L;
d) determining a pixel intensity for each pixel disposed in said Z-direction above said first pixel;
e) determining a position of a pixel corresponding to a last change in intensity relative to said Z-direction baseline;
f) measuring a minimum distance between said position of said pixel determined in step e) generally parallel to said Z-direction relative to said Z-direction baseline.
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Abstract
The present disclosure provides a method for counting the number of fibers emanating from the surface of a web substrate.
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Citations
20 Claims
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1. A method for measuring the effective height of a fiber emanating from the surface of a web substrate, the web substrate having a machine direction, a cross-machine direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both said machine and cross-machine directions, said method comprising the steps of:
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a) providing an image file of said web substrate, said image file containing at least a two-dimensional image of said web substrate wherein at least one of said at least two-dimensions comprises at least a component of said Z-direction; b) establishing a Z-direction baseline having a length L and being generally co-planar to said Z-direction, said Z-direction baseline having a component orthogonal to said Z-direction; c) determining a pixel intensity of a first pixel disposed within said length, L; d) determining a pixel intensity for each pixel disposed in said Z-direction above said first pixel; e) determining a position of a pixel corresponding to a last change in intensity relative to said Z-direction baseline; f) measuring a minimum distance between said position of said pixel determined in step e) generally parallel to said Z-direction relative to said Z-direction baseline. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16)
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9. A method for measuring the effective height of a fiber emanating from the surface of a web substrate, the web substrate having a machine direction, a cross-machine direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both said machine and cross-machine directions, said method comprising the steps of:
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a) providing an image file of said web substrate, said image file containing at least a two-dimensional image of said web substrate wherein at least one of said at least two-dimensions comprises at least a component of said Z-direction; b) establishing a Z-direction baseline having a length L and being generally co-planar to said Z-direction, said Z-direction baseline having a component orthogonal to said Z-direction; c) determining a pixel intensity of a first pixel disposed within said length, L; d) determining a pixel intensity for each pixel disposed in said Z-direction below said first pixel; e) determining a position of a pixel corresponding to a first change in intensity relative to said Z-direction baseline; f) measuring a minimum distance between said position of said pixel determined in said step e) generally parallel to said Z-direction relative to said Z-direction baseline.
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17. A method for measuring the average effective height of fibers emanating from the surface of a web substrate, the web substrate having a machine direction, a cross-machine direction orthogonal and coplanar thereto, and a Z-direction orthogonal to both said machine and cross-machine directions, said method comprising the steps of:
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a) providing an image file of said web substrate, said image file containing at least a two-dimensional image of said web substrate wherein at least one of said at least two-dimensions comprises at least a component of said Z-direction; b) establishing a Z-direction baseline having a length L and being generally co-planar to said Z-direction, said Z-direction baseline having a component orthogonal to said Z-direction; c) determining a pixel intensity for each of 1, 2, 3, . . . n pixels disposed in said Z-direction for a first position within said length L; d) determining a pixel intensity for each of 1, 2, 3, . . . n pixels disposed in said Z-direction for a second position within said length L, said second position being immediately adjacent said first position; e) repeating said step d) for each position for each of 3, 4, 5, . . . n positions within said length L, each succeeding position being disposed immediately adjacent a previous position; f) determining a position of a pixel corresponding to a last change in intensity relative to said Z-direction baseline for each of said positions disposed within said length L; g) measuring a minimum distance between said position of said pixel determined in step f) generally parallel to said Z-direction relative to said Z-direction baseline for each of said positions disposed within said length L; and
,h) mathematically averaging said distances determined in said step g) to determine said average effective height. - View Dependent Claims (18, 19, 20)
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Specification