METHOD OF DETERMINING SOLDER PASTE HEIGHT AND DEVICE FOR DETERMINING SOLDER PASTE HEIGHT
First Claim
1. A method of determining a solder paste height of solder paste printed on a circuit board, the method comprising:
- obtaining a two-dimensional image of the circuit board which is captured from above a solder printed surface; and
determining the solder paste height corresponding to a pixel value of each of pixels of the two-dimensional image, based on height information which defines a relationship between the pixel value and the solder paste height, the pixel value being a value representing at least one of luminance of red in a RGB color model, luminance of green in the RGB color model, luminance of blue in the RGB color model, hue in a HSI color model, saturation in the HSI color model, and intensity in the HSI color model,wherein the height information shows that a difference between an intensity value and a hue value in the HSI color model corresponds to the solder paste height, andin the determining, the solder paste height is determined by calculating the difference.
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Accused Products
Abstract
A method of determining a solder paste height of solder paste printed on a circuit board, the method including obtaining a two-dimensional image of the circuit board which is captured from above a solder printed surface, and determining the solder paste height corresponding to a pixel value of each of pixels of the two-dimensional image, based on height information which defines a relationship between the pixel value and the solder paste height, the pixel value being a value representing at least one of luminance of red in a RGB color model, luminance of green in the RGB color model, luminance of blue in the RGB color model, hue in a HSI color model, saturation in the HSI color model, and intensity in the HSI color model.
17 Citations
6 Claims
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1. A method of determining a solder paste height of solder paste printed on a circuit board, the method comprising:
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obtaining a two-dimensional image of the circuit board which is captured from above a solder printed surface; and determining the solder paste height corresponding to a pixel value of each of pixels of the two-dimensional image, based on height information which defines a relationship between the pixel value and the solder paste height, the pixel value being a value representing at least one of luminance of red in a RGB color model, luminance of green in the RGB color model, luminance of blue in the RGB color model, hue in a HSI color model, saturation in the HSI color model, and intensity in the HSI color model, wherein the height information shows that a difference between an intensity value and a hue value in the HSI color model corresponds to the solder paste height, and in the determining, the solder paste height is determined by calculating the difference.
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2-5. -5. (canceled)
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6. A device for determining a solder paste height printed on a circuit board, the device comprising:
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an image obtaining unit configured to obtain a two-dimensional image of the circuit board which is captured from above a solder printed surface; and a height determining unit configured to determine the solder paste height corresponding to a pixel value of each of pixels of the two-dimensional image, based on height information which defines a relationship between the pixel value and the solder paste height, the pixel value being a value representing at least one of luminance of red in a RGB color model, luminance of green in the RGB color model, luminance of blue in the RGB color model, hue in a HSI color model, saturation in the HSI color model, and intensity in the HSI color model, wherein the height information shows that a difference between an intensity value and a hue value in the HSI color model corresponds to the solder paste height, and the height determining unit determines the solder paste height by calculating the difference.
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Specification