User Intro
Prog Intro
Liste des commandes
Liste des manuels
Table of Contents
jpg2inr - converts a JPEG image to Inrimage image.
jpg2inr
[-i]
jpg2inr
[input-jpeg-file | -]
[image-out]
[-color N]
[-grayscale]
[-fast]
[-dither dither-mode]
[-dct dct-mode]
[-scale M/N]
[-nosmooth]
[-onepass]
[-maxmemory N]
jpg2inr
converts a JPEG image to Inrimage image. jpg2inr was
previously a perl script calling a patch of djpeg (the
jpeg decoder provided by libjpeg Copyright (C) 1996, Thomas G. Lane).
From version 2.0.0, jpg2inr is a full client of libjpeg and
propose most of options of djpeg.
- -i
- do not convert but print informations found in input header.
- -colors N
- reduce to N colors (with colormap)
- -grayscale
- reduce to 256 gray level image
- -fast
- combination of -nosmooth, -onepass, -dither none and -dct fast
- -dither none|ordered|fs
- color dithering (needs -colors) method
fs=floyd steinberg, ordered color and none dithering (faster)
- -dct int|fast|float
- select the DCT method; float is the slower
- -scale M/N
- scale image with factor M/N
- -nosmooth
- don't use high-quality upsampling
- -onepass
- one pass in color quantification (needs -colors)
- -maxmemory N
- maximum memory for jpeg decoding (in K-bytes)
If an image is reduced to N colors (option -colors), the colormap
is written in Inrimage image header and the size of header is
automatically set to 8. However, a call to -hdr= may overload this
value.
Option -C is not supported.
ifmt(1i)
, inr2jpg(1i)
See Inrimage(1i)
for a description of general options.
JPG2INR (1I) version 2.0.0, Inrimage 4.6.9 March 2022
NAME