aaphoto1

Usage

Overview

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

Options

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

Overwrite mode, the original source file is replaced

--jpg

JPG image output

--jp2

JPEG 2000 image output

--png

PNG image output with alpha channel support

--bmp

BMP image output

-r --resize

Resize image taking the longer side in % or pixels

--rotate90

Rotate image with 90 degrees clockwise

--rotate180

Rotate image with 180 degrees

--rotate270

Rotate image with 90 degrees counter-clockwise

--flipx

Mirror image horizontally

--flipy

Mirror image vertically

--noexif

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

--quiet

Same as -s, --silent

-V --verbose

Print verbose information about processing

--test

Print detailed test information into image

Examples

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

Remarks

- 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