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

EDIT 6170Chi Thai and John Martin2 Event 1: Engage Instruction Robot tracks color Satellite photographs Medical uses Forensics uses Hobby - digital camera

EDIT 6170Chi Thai and John Martin3 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

EDIT 6170Chi Thai and John Martin4 The lesson follows Gagne’s events of instruction 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

EDIT 6170Chi Thai and John Martin5 Event Four: Present Stimulus Material Modern Digital Camera consists of: –Lens –Lens Mount –Imaging Sensor –Electronics. Lens Electronics Lens mount Imaging Sensor

EDIT 6170Chi Thai and John Martin6 Event 5: Provide Learning Guidance ff g b G B Marginal Ray Chief Ray (Object) (Image) 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

EDIT 6170Chi Thai and John Martin7 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 were effective and clear The post test, however, was too long So far, out of 6 students, only two have finished the entire “course”

EDIT 6170Chi Thai and John Martin8 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). Event 7 - Provide Feedback

EDIT 6170Chi Thai and John Martin9 Event 8 - Assess Performance Only two students finished far enough to get to the posttest. However, the two that finished were fairly successful.

EDIT 6170Chi Thai and John Martin10 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

EDIT 6170Chi Thai and John Martin11 Event 9 - Enhance Retention