Chapter 7 Method Determination

Chapter 7 Method Determination

7.1 Introduction to method determination

7.2 Creating draft method

7.3 Adjusting draft method

7.4 Finalizing the method

7.5 Examples

7.6 Exercises

7.1 Introduction to method determination (1)

- New idea will be useless, unless you create the method following the idea.

- The method or model following the idea should be applicable by other people.

- The method or model should be explained in step by step or in processes that people can apply in their conditions.

- The idea without method is not ensured to be effective.

7.1 Introduction to method determination (2)

- To make the idea into the detail (method) is important.

- You do not need to create the perfect method at the first step.

- You should not give up to turn PDCA in order to improve your draft method.

7.2 Creating draft method (1)

To create the draft method, you should not expect the perfect ones at the first step.

- Write down your draft method in a paper.

- Do not skip steps to think of perfect ones.--> difficult to think out the perfect one.

- Do not be ashamed when you create poor methods.

7.2 Creating draft method (2)

- The important thing is to improve the draft methods many times.

- First step.... Define the input and output of the system

- Second step... Divide the system into rough processes.

- Third step... Break the processes into step levels.

-Fourth step... Simulate by inputting data and investigate the results.

7.2 Creating draft method (3)

Example

Durian Maturity Determination System

System

Ultrasonic Signal

Mature or Immature

Determining the input data, system and output data.

7.2 Creating draft method (4)

To break the idea into rough processes....

Process 1 Input the ultrasonic signal

Process 2 Receive the response

Process 3 Amplify the response

Process 4 Compare the signal in Process 3 and standard

7.2 Creating draft method (5)

Process 5 Determining the similarity with the standard

Process 6 Output the results

---> Employ the draft method as dummy to improve later.

---> Make the draft one into more detail until step levels

7.3 Adjusting draft method (1)

- You should confirm the inputs and outputs of all processes following the sequence of processes.

- Reduce the redundant steps and processes.

- Replace the processes by more appropriate ones.

- Reorder the sequence of steps and processes.

7.3 Adjusting draft method (2)

Example Calcification Detection

Step 1 Input image

Step 2 Edge Detection

Step 3 Filtering the high frequency components

Step 4 Output the results

Here we can replace step 3 by wavelet and reorder step 2 and 3 in order to correct the process.

7.3 Adjusting draft method

- Determining the issues and view points such as accuracy, speed, cost, etc.

- Try to replace the process by new algorithm, reorder the processes, and reduce the redundant processes.

- Confirm the data following the flow of processes.

- Repeat several times and ask someone to monitor.

7.6 Exercises