Greyscale rendering is deliberate. Gupta et al. (2023, “GlyphNet”) found that greyscale outperforms colour for glyph comparison because extreme contrast preserves edge detail through resize. No image augmentation either: flipping or rotating characters creates unrealistic glyphs.
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，这一点在91视频中也有详细论述
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Coulibaly didn’t speak during the brief hearing, which was attended by at least a dozen uniformed police officers and police union officials.