Detection of scratch on transparent plate with strong scattering noise by digital holographic technique

Yeh Wei Yu; Wen Li Wang; Yong Sheng Lin; Han Shin Ko; Shih Hsin Ma; Ching Cherng Sun; Wen Hsuan Wu; Tsung Hsun Yang

doi:10.3390/cryst11091107

Detection of scratch on transparent plate with strong scattering noise by digital holographic technique

Yeh Wei Yu, Wen Li Wang, Yong Sheng Lin, Han Shin Ko, Shih Hsin Ma, Ching Cherng Sun, Wen Hsuan Wu, Tsung Hsun Yang

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We applied a digital holographic detection technique to detect the scratches on glass surfaces with scattering noise. In the experiment, scratches with widths of 1.67 µm were generated on the front sides of the glass slides, and three different gray levels were painted on the back sides of the glass slides to generate the scattering noise. It demonstrated that the digital holographic detection method can enhance the image contrast of the scratch under high scattering noise. The high defocus tolerance promises a detection process without optical focusing and thus benefits the high-speed automatic optical inspection.

Original language	English
Article number	1107
Journal	Crystals
Volume	11
Issue number	9
DOIs	https://doi.org/10.3390/cryst11091107
State	Published - Sep 2021

Keywords

Automated optical inspection
Digital holographic detection
Glass
Scattering noise
Surface defect

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10.3390/cryst11091107

"Naked-Eyes 3d Vedio without Display" Implemented by Volume Holographic Optical Element(3/3)
Yu, Y.-W. (PI)
1/08/21 → 31/10/22
Project: Research

Cite this

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title = "Detection of scratch on transparent plate with strong scattering noise by digital holographic technique",

abstract = "We applied a digital holographic detection technique to detect the scratches on glass surfaces with scattering noise. In the experiment, scratches with widths of 1.67 µm were generated on the front sides of the glass slides, and three different gray levels were painted on the back sides of the glass slides to generate the scattering noise. It demonstrated that the digital holographic detection method can enhance the image contrast of the scratch under high scattering noise. The high defocus tolerance promises a detection process without optical focusing and thus benefits the high-speed automatic optical inspection.",

keywords = "Automated optical inspection, Digital holographic detection, Glass, Scattering noise, Surface defect",

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AU - Yu, Yeh Wei

AU - Wang, Wen Li

AU - Lin, Yong Sheng

AU - Ko, Han Shin

AU - Ma, Shih Hsin

AU - Sun, Ching Cherng

AU - Wu, Wen Hsuan

AU - Yang, Tsung Hsun

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N2 - We applied a digital holographic detection technique to detect the scratches on glass surfaces with scattering noise. In the experiment, scratches with widths of 1.67 µm were generated on the front sides of the glass slides, and three different gray levels were painted on the back sides of the glass slides to generate the scattering noise. It demonstrated that the digital holographic detection method can enhance the image contrast of the scratch under high scattering noise. The high defocus tolerance promises a detection process without optical focusing and thus benefits the high-speed automatic optical inspection.

AB - We applied a digital holographic detection technique to detect the scratches on glass surfaces with scattering noise. In the experiment, scratches with widths of 1.67 µm were generated on the front sides of the glass slides, and three different gray levels were painted on the back sides of the glass slides to generate the scattering noise. It demonstrated that the digital holographic detection method can enhance the image contrast of the scratch under high scattering noise. The high defocus tolerance promises a detection process without optical focusing and thus benefits the high-speed automatic optical inspection.

KW - Automated optical inspection

KW - Digital holographic detection

KW - Glass

KW - Scattering noise

KW - Surface defect

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VL - 11

JO - Crystals

JF - Crystals

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ER -

Detection of scratch on transparent plate with strong scattering noise by digital holographic technique

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Keywords

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&quot;Naked-Eyes 3d Vedio without Display&quot; Implemented by Volume Holographic Optical Element(3/3)

Cite this

"Naked-Eyes 3d Vedio without Display" Implemented by Volume Holographic Optical Element(3/3)