Paper
10 August 2023 Bubble detection of polarizer on flexible OLED screen based on OpenCV
Haoqi Wang, Shuaifan Zhou, Wenchao Yang, Hao Li
Author Affiliations +
Proceedings Volume 12759, International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023); 127593G (2023) https://doi.org/10.1117/12.2686563
Event: 2023 3rd International Conference on Automation Control, Algorithm and Intelligent Bionics (ACAIB 2023), 2023, Xiamen, China
Abstract
This paper proposes a visual inspection algorithm based on OpenCV to address the issue of bubbles in polarizers during attachment, which has the potential to reduce yield and reliability due to hardware, attachment parameters, and material characteristics. An industrial camera is used to capture real-time images of flexible OLED panels that already have attached polarizers. The captured images are subjected to grayscale conversion and median filtering to remove noise. Edge detection is then performed using the Canny operator and binary processing to mark the bubble edges. The bubble edge area is filled, and the area of the bubble is calculated, with larger bubbles filtered out. Comparative experiments demonstrate that this visual inspection algorithm based on OpenCV can achieve reliable detection results even under uneven illumination and severe reflection conditions. The proposed algorithm has significant value in addressing the issue of bubbles in polarizer attachment and can be applied in industrial production.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Haoqi Wang, Shuaifan Zhou, Wenchao Yang, and Hao Li "Bubble detection of polarizer on flexible OLED screen based on OpenCV", Proc. SPIE 12759, International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023), 127593G (10 August 2023); https://doi.org/10.1117/12.2686563
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KEYWORDS
Image processing

Polarizers

Edge detection

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