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Light Emitting Marker for Robust Vision-Based On-The-Spot Bacterial Growth Detection. | LitMetric

Light Emitting Marker for Robust Vision-Based On-The-Spot Bacterial Growth Detection.

Sensors (Basel)

Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Daejeon 34141, Korea.

Published: June 2017

AI Article Synopsis

  • A new method for measuring bacterial growth using an LED array as a marker is proposed, which can be automated and is less affected by external light conditions.
  • This modified approach improves upon the existing marker-based methods that rely on light and image processing, which can be disrupted by background colors or lighting.
  • By using LEDs, the system can work effectively in darkly colored broth and serves as an indicator for regions of interest in images, promising more reliable growth detection.

Article Abstract

Simple methods using the striped pattern paper marker and FFT (fast Fourier transformation) have been proposed as alternatives to measuring the optical density for determining the level of bacterial growth. The marker-based method can be easily automated, but due to image-processing-base of the method, the presence of light or the color of the culture broth can disturb the detection process. This paper proposes a modified version of marker-FFT-based growth detection that uses a light emitting diode (LED) array as a marker. Since the marker itself can emit the light, the measurements can be performed even when there is no light source or the bacteria are cultured in a large volume of darkly colored broth. In addition, an LED marker can function as a region of interest (ROI) indicator in the image. We expect that the proposed LED-based marker system will allow more robust growth detection compared to conventional methods.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5492430PMC
http://dx.doi.org/10.3390/s17061459DOI Listing

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