Designing a Digital Imaging System: An On-Line Course

1. Designing a Digital Imaging System: An On-Line Course Dr. Chi Thai and John Martin Edit 6170 e-Poster

2. Event 1: Engage Instruction • Robot tracks color • Satellite photographs • Medical uses • Forensics uses • Hobby - digital camera http://terraserver.microsoft.com Chi Thai and John Martin

3. Event 2: Show Objectives Unit 1 - SWBAT demonstrate the ability to select an imaging CCD sensor • Determine the pixel resolution needed for smallest image features. • Determine physical size of imaging sensor. Unit 2 - SWBAT demonstrate the ability to select a commercial lens by calculating the lens focal length: • Calculate appropriate focal length that allows an image of a real scene to fit on the imaging sensor Unit 3 - SWBAT demonstrate the ability to determine the need for a macro-ring • Calculate the macro-ring size if needed Chi Thai and John Martin

4. Event 3: Recall Info Instructional event 1. Gain attention 2. Inform learner of objective 3. Recall information 4. Present stimulus material 5. Provide learning guidance 6. Elicit performance 7. Provide feedback 8. Assess performance 9. Enhance retention The lesson follows Gagne’s events of instruction Chi Thai and John Martin

5. Modern Digital Camera consists of: Lens Lens Mount Imaging Sensor Electronics. Event Four: Present Stimulus Material Electronics Lens Imaging Sensor Lens mount Chi Thai and John Martin

6. Marginal Ray f f G Chief Ray (Object) B (Image) g b Event 5: Provide Learning Guidance f (focal point) is a standard property of commercial lens f = 1/b + 1/g m= B/G=b/g The main part of the lesson was determining G, and using G, g, and B to calculate m (magnification) then b and eventually f Chi Thai and John Martin

7. Event 6 - Elicit Performance • Practice test - instant feedback via web • However, the data for the students that finished is promising • The students indicated that the lessons wereeffective and clear • The post test, however, was too long • So far, out of 6 students, only two have finished the entire “course” Chi Thai and John Martin

8. Event 7 - Provide Feedback • Distance Learning drop out rate of manual trade workers is 50% higher than the average distance learning rate (Cookson, 1989) • Older employees have higher course completion rates than those younger than 50 (Rekkedal, 1983) • The best population for distance learning is housewives. (Carr and Ledwith, 1980). Chi Thai and John Martin

9. Event 8 - Assess Performance Only two students finished far enough to get to the posttest. However, the two that finished were fairly successful. Chi Thai and John Martin

10. Lessons Learned • For the field trial, we should have not have relied on our students to be able to do this on-line on their own • Also, some portion of the student population is just not “geared for” on-line learning • However, the students that finished it did actually learn from the material and enjoyed the lesson Chi Thai and John Martin

11. Event 9 - Enhance Retention Chi Thai and John Martin