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aaphoto - automatic color correction of photos


aaphoto [option[s]] [source file[s]]


Auto Adjust Photo is a tiny command-line image manipulation tool for automatic color
correction of photos. It tries to make the picture look better. The program does this by
analyzing the input image and then sets the most optimal contrast, gamma, color balance
and saturation for it.

The following image types are supported (thanks to JasPer, JPEG and PNG):
mif, pnm / pgm / ppm, bmp, ras, jp2, jpc, jpg, png

Quality settings can be applied only to jp2, jpc, jpg formats


The following options are supported:

-h --help
Print this help

-v --version
Print version information

-a --autoadjust
Auto adjust the colors of the image

-o --output
Set output directory

Overwrite mode, the original source file is replaced

JPG image output

JPEG 2000 image output

PNG image output with alpha channel support

BMP image output

-r --resize
Resize image taking the longer side in % or pixels

Rotate image with 90 degrees clockwise

Rotate image with 180 degrees

Rotate image with 90 degrees counter-clockwise

Mirror image horizontally

Mirror image vertically

Save image without EXIF info

-q --quality
Set image quality from 1 to 100

-t --threads
Set number of working threads (default: autodetect)

-s --silent
Silent mode, no information printed during operation

Same as -s, --silent

-V --verbose
Print verbose information about processing

Print detailed test information into image


aaphoto folders
aaphoto image.jpg
aaphoto -a -r600 -q85 *.jpg
aaphoto mydir
aaphoto -V --resize70% image.png
aaphoto --quality60 image.jp2
aaphoto image.jp2


- auto adjust parameter is set by default without any other parameters
- a _new filename will be generated without --overwrite parameter
- every file is processed on directory input but not recursively
- order of parameters does not matter
- resize value can be set in percentage too
- resize parameter should be less or equal than original
- resize uses the best (and slowest) resampling method
- default jpeg compression quality is 95%
- EXIF information is restored in jpeg images by default
- number of threads is set to the number of online processors by default


Auto Adjust Photo
Copyright (C) 2006-2011 Andras Horvath
E-mail: [email protected] - suggestions & feedbacks are welcome
URL: http://log69.com - the official site
Man page originally made by rezso ([email protected])

The following libraries are used by this program:
libgomp - OpenMP for parallel programming, http://gcc.gnu.org/onlinedocs/libgomp/
libjasper - JasPer software, http://www.ece.uvic.ca/~mdadams/jasper/
libjpeg - IJG JPEG software, http://www.ijg.org/
libpng - PNG software, http://www.libpng.org/
libz - Compression library, http://www.zlib.net/

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