Output Function Evaluation of the Intelligent Drinking Water Machine for The Blind by using Image Recognition 以影像辨識評估現有盲用飲水機之出水功能 Speaker ： Bo-Hung Chen Adviser ： Dr. Shih-Chung Chen

Introduction Paper review Patent Material Methods Results & Discussion Outline

Introduction

Motive How to make existing drinking water machine become non-contact ？ (Or reduce the number of contacts) What can we use ？ Why?

What’s Blind Common Problems Scald ？ Biochemical infection ？

Drinking Water Machine Designed for The Blind

Paper Review

Paper review 1 WATER LEVEL INDICATOR IN A PAPER CUP USING IMAGE PROCESSING TECHNIQUES Shih-Chung Chen, Phung Thi Phuong Thuy, Rubie Fernando Viñas and Ching-Yi Chien The Institute of Electrical Engineering, Southern Taiwan University

Use LabVIEW and Vision Assistant Determine the presence and the percentage of water in the cup

Problem Found Don’t know the cup height(Because camera is on the top, Image will become 2D), so it only can be used in paper cup. We have to determine the presence and the percentage of water in the cup, but we don’t have water outlets. Flow chart isn’t correct.

Patent

The first found relevant patent. Because this method has been registered, So it can't be used. I can’t find other related patents untill now.

Material

Use the chemical experimental equipment to simulation of water flow down from a height.

Material Install the light source and USB camera for the outlet USB Camera LED Laser light source Look up Overlooking

Methods

Image capture Interception of images using video software OriginalMaximum clear valueMinimum clear value

Image capture Contrast and brightness adjustment Maximum contrast value Minimum brightness value Maximum contrast value Maximum brightness value Maximum contrast value

Image capture Coffee cup(Original image)Paper cup(Original image) Water Circle Top Circle

Problem & Solution Case 1 ： Water column will block top area Capture the image at first Case 2 ： Bubble problem Down the outlet and let flow rate consistent Case 3 ： Water wave problem Not big deal ！ Case 4 ： Water splash Not exist (If Case 2 and 3 has been solve)

Methods

Method 1 If the top area is an circle Schematic diagram

Method 2 If the top area is not circle

Rule of thumb Glass manufacturers have to consider their products is competitive, so they can’t desing a cup which is hard to use or pick up PET bottle can’t use in this method

Results & Discussion

Results Reduce the number of contacts Error can be ignored Transparent cup can’t use this method

Discussion Is it possible that transparent cup can use this method? Why error can be ignored? Why not? Any other methods?(Lower price)

Thanks for your attention!