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< > BotCompany Repo | #1009142 // Paint random Haar-like features (OK)

JavaX source code [tags: use-pretranspiled] - run with: x30.jar

Uses 3874K of libraries. Click here for Pure Java version (13446L/83K/311K).

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!7
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// Actually the relationship between the white and the black part
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// could be much more general. Why do they have to touch each other?
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// Why do they need to have the same aspect ratio? Only the area has
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// to be the same.
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//
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// And even that could be lifted by applying a correction factor
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// (area white / area black).
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//
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// Finally, they can even overlap, then you'd use a factor of
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// (non-overlapping white area / non-overlapping black area).
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//
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// No idea if these would then be called "generalized Haar features" or what
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//
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// The general unit returned by a Haar match should be pixels*brightness
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// (value can be negative too).
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//
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// Result classification:
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//   positive = match
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//   0        = non-match (indifferent/not applicable)
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//   negative = anti-match (Haar feature should be inverted)
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p-subst {
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  repeat with sleep 1 {
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    currentImage(newBufferedImage(200, 200, Color.gray));
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    Rect r = randomRect();
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    Pair<Rect> p;
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    if (tossCoin()) {
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      r.h &= ~1; // make even
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      p = splitRectInVerticalHalves(r);
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    } else {
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      r.w &= ~1; // make even
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      p = splitRectInHorizontalHalves(r);
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    }
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    if (oneInTwoChance()) p = reversePair(p);
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    fillRect(p.a, Color.black);
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    fillRect(p.b, Color.white);
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    quickShowImage();
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  }
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}

Author comment

Began life as a copy of #1006918

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Snippet ID: #1009142
Snippet name: Paint random Haar-like features (OK)
Eternal ID of this version: #1009142/19
Text MD5: 02e9992b09d448fbb42edc8402be56cf
Transpilation MD5: d3d196a7ab7d84feec070c429bf7599b
Author: stefan
Category: javax / imaging
Type: JavaX source code
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2021-09-08 04:31:30
Source code size: 1305 bytes / 41 lines
Pitched / IR pitched: No / No
Views / Downloads: 529 / 703
Version history: 18 change(s)
Referenced in: [show references]