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+= Lossless JPEG =
+
+Huffman compression applied to the bits.
+
+It is used by [[Canon_CR2]], [[Kodak_DCR]] and [[Adobe DNG]]
+
+ * ljpeg seems to be the only C reference implementation, and according the le JPEG-FAQ has bugs with 16-bits.
+
+ * Adobe DNG SDK seems to use an adaptation of the former, in C++. To bad the license isn't GPL compatible.
+
+ * [[https://jrawio.dev.java.net/|jrawio]] in Java has an implementation that seems to work. Only RC5 is GPL compatible as past version are under the Apache 2.0 license.
+
+ * dcraw also implements it.