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Decibel target. Data generation for the current chunk stops if the estimated luminance error, expressed in decibels, reaches value decibel#. The default value #0# has a special meaning: data will be generated regardless of the estimated luminance error. Specifying value #0# in fact shortcuts the computation of the estimated luminance error and sensibly speeds up the encoding process.

Definition at line 207 of file IW44Image.h.

Referenced by IWPixmap::Encode::encode_chunk(), IWBitmap::Encode::encode_chunk(), and DjVuDocEditor::generate_thumbnails().

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