Implementation of Otsu’s Method in Vein Locator Devices

Gwo-Jia Jong, Hendrick Hendrick, Zhi-Hao Wang, Dedi Kurniadi, Aripriharta Aripriharta, Gwo-Jiun Horng


Abstract—In finding the position of the vein for injection process can bring any difficulty particularly for the patient who has too deep vein position under the skin. Sometimes it causes the nurses do several injections to find the right vein position. This problem will make the patient uncomfortable. The objective of this research tries to solve that patients scaring through modifying normal IR CCTV camera to become a biomedical device in order to visualize vein location on a human hand. The normal IR CCTV camera is modified by removing the IR cut filter to allow mid-infrared wavelengths. In order to find the vein location, a few stages must be done such as remove the background, extracting into the single color plane, reversing the image, filtering, thresholding with Otsu’s method and eroding. This system was named with Vein Scanner System (VSS) which have function look like a scanner. To utilize the scanner recording process, this research used a stepper motor that has a function to perform scanning by moving the camera gradually along the desired point of the human hand. In controlling approach was used raspberry Pi as the core of the VSS to do image processing and to control camera position. Then, the Vein Locator Device was used to compare with the VSS to make sure the right vein. Finally, the VSS has succeeded to visualize the vein on hand.


IR CCTV camera, image processing, vein image, IR Cut Filter, Otsu's Method

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