Talk:Zhang-Suen thinning algorithm: Difference between revisions

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(questioning step-1 vs step-2)
 
(Not the first cell scanned.)
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--[[User:Tim-brown|Tim-brown]] ([[User talk:Tim-brown|talk]]) 17:33, 15 October 2013 (UTC)
--[[User:Tim-brown|Tim-brown]] ([[User talk:Tim-brown|talk]]) 17:33, 15 October 2013 (UTC)

:I expect that there are removals of some of those surrounding cells before it gets to your '?' cell which affects the final outcome.

Revision as of 18:53, 15 October 2013

Could someone help explain why, in the example image the following transformation occurs (in the periods separating the R and C, and after the C): 

.....    .....
.###. -> .....
.#?#.    ..#..
.....    .....

Surely the the cell labelled '?' will be culled at step 1: 

- It is black with 8 neighbours
- B = 5 (2 <= 5 <= 6)
- A = 1
- At least one of P2 P4 P6 is white (P6 is white)
- At least one of P4 P6 P8 is white (P6 is white)

Why isn't it whitened at step 1?

--Tim-brown (talk) 17:33, 15 October 2013 (UTC)

I expect that there are removals of some of those surrounding cells before it gets to your '?' cell which affects the final outcome.
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