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1 | // by default returns dark regions as foreground |
2 | |
3 | sclass G22ForegroundFinder {
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4 | // input |
5 | settable L<IImageRegion> allRegions; |
6 | |
7 | // internal |
8 | gettable Rect borderRect; |
9 | |
10 | // output |
11 | Set<IImageRegion> foregroundRegions; |
12 | |
13 | *() {}
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14 | *(L<IImageRegion> *allRegions) {}
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15 | |
16 | Set<IImageRegion> foregroundRegions aka get() {
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17 | run(); |
18 | ret foregroundRegions; |
19 | } |
20 | |
21 | L<IImageRegion> backgroundRegions() {
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22 | ret listMinusSet(allRegions, foregroundRegions()); |
23 | } |
24 | |
25 | run {
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26 | if (foregroundRegions != null) ret; |
27 | borderRect = mergeRects(map(allRegions, r -> r.bounds())); |
28 | foregroundRegions = new LinkedHashSet; |
29 | for (r : allRegions) |
30 | if (isForegroundRegion(r)) |
31 | foregroundRegions.add(r); |
32 | } |
33 | |
34 | swappable bool isForegroundRegion(IImageRegion region) {
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35 | ret defaultDecolorizer().toGrayScale(region.color()) < 128; |
36 | } |
37 | } |
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| Snippet ID: | #1035839 |
| Snippet name: | G22ForegroundFinder - determines foreground from background regions |
| Eternal ID of this version: | #1035839/13 |
| Text MD5: | 3cd216be7532c3eac9cae33f5ec37642 |
| Transpilation MD5: | 64864944c655fb61c24b70f63abf6d68 |
| Author: | stefan |
| Category: | javax / gazelle 22 |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2022-08-02 21:07:58 |
| Source code size: | 893 bytes / 37 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 83 / 159 |
| Version history: | 12 change(s) |
| Referenced in: | [show references] |