0:19:12: q1 what is the value of the pixel? ANS: 50
0:20:14: Q2 how about the other one? ANS: 90
0:25:10: Q3 what do you expect the output is? ANS: same image or original
0:28:57: Q4. How about this one? ANS: shift or move
0:32:02: Q5. what do you expect the output image to be like? ANS: detect horizontal edge
0:35:57: Q6. do we still have similar output if we modifed filter to [1 0 -1; 1 0 -1; 1 0 -1]? ANS: yes
0:40:41: Q7. What do you expect output is like? ANS: sharpen
0:45:05: Q8. Is it shift invariant? ANS: yes
0:46:29: Q9. Is it linear? ANS: yes
0:48:31: Q10. Is it shift invariant? ANS: yes
0:50:04: Q11. Is it linear? ANS: no