Constant turbojpeg_sys::TJPARAM_TJPARAM_LOSSLESSPT

source · 
pub const TJPARAM_TJPARAM_LOSSLESSPT: TJPARAM = 17;
Expand description

Lossless JPEG point transform (Pt)

Value

  • 0 through precision - 1, where precision is the JPEG data precision in bits [default for compression: 0]

A point transform value of 0 is necessary in order to generate a fully lossless JPEG image. (A non-zero point transform value right-shifts the input samples by the specified number of bits, which is effectively a form of lossy color quantization.)

@see #TJPARAM_LOSSLESS, #TJPARAM_PRECISION