Timeline for Edge map based on a Haar Wavelet Transform
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Nov 25, 2017 at 9:51 | comment | added | Laurent Duval | There several potential discrete 1D gradient, and this one is the shortest. It provides a derivative estimate at the mid-point between two pixels | |
| Nov 25, 2017 at 9:37 | comment | added | Abc | After re-reading this answer, it seems like haar filter [1 -1] is actually 1D gradient. | |
| Nov 17, 2017 at 11:56 | comment | added | Abc | so it mean magnitude will be sqrt (vv + hh + d*d) | |
| Mar 10, 2017 at 14:01 | vote | accept | CpCd0y | ||
| Mar 10, 2017 at 8:10 | history | edited | Laurent Duval | CC BY-SA 3.0 |
added details
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| Mar 9, 2017 at 9:12 | comment | added | CpCd0y | Thanks for your answer. Could you elaborate more on the gradient part ? Is this why we have to compute the Euclidean distance between HL, LH and HH ? | |
| Mar 7, 2017 at 11:59 | history | answered | Laurent Duval | CC BY-SA 3.0 |