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< > BotCompany Repo | #1035835 // HashBinaryImage - makes a 64 bit hash of an IBinaryImage (compatible with HashBufferedImage)

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (12666L/73K).

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srecord noeq HashBinaryImage(IBinaryImage img) {
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  long hash;
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  long get() {
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    if (img == null) ret hash;
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    var img = this.img.toImage2B();
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    int w = img.getWidth(), h = img.getHeight();
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    int n = w*h;
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    byte[] pixels = img.pixels;
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    addToHash(w);
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    addToHash(h);
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    for i to n:
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      addToHash((pixels[i/8] & (1 << (i & 7))) != 0 ? 0xFFFFFFFF : 0xFF000000);
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    ret hash;
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  }
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  void addToHash(long x) {
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    hash = boostHashCombine64(hash, x);
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  }
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}

Author comment

Began life as a copy of #1034815

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Travelled to 3 computer(s): elmgxqgtpvxh, mqqgnosmbjvj, wnsclhtenguj

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Snippet ID: #1035835
Snippet name: HashBinaryImage - makes a 64 bit hash of an IBinaryImage (compatible with HashBufferedImage)
Eternal ID of this version: #1035835/4
Text MD5: 4ea07c5f99f6dd969950a206a50705db
Transpilation MD5: cfeca2e9e3af2d321301373c9fe8d5dd
Author: stefan
Category: javax / imaging
Type: JavaX fragment (include)
Public (visible to everyone): Yes
Archived (hidden from active list): No
Created/modified: 2022-08-02 19:20:22
Source code size: 505 bytes / 24 lines
Pitched / IR pitched: No / No
Views / Downloads: 146 / 212
Version history: 3 change(s)
Referenced in: [show references]