Single camera solution for book scanner.

This program was written in ad-hoc manner without thinking about publishing the source code. It was just a test of concept.

I've got many requests to publish the program after I posted YouTube videos:

• Book Scanner: First Prototype
• Book Scanner: Marker Test
• Book Scanner: Image Processing Test #1

So I published it. But it was a project that was done in a day years ago, and I have no time to verify it still works today.

Install OpenCV and SCons:

sudo port install opencv scons

Compile using SCons:

scons

The program takes three arguments:

./extpage test_input.jpg output_left.jpg output_right.jpg

where test_input.jpg is the input file name, and the following two are the output file names.

To debug using an webcam, execute the program without an argument:

./extpage

One way to automate is to use Automator script like this one:

if [ x$1 = x ]; then
	exit;
fi

FILENAME=${1##*/}
EXT=${FILENAME##*.}
BASE=${FILENAME%.*}
SRC_PATH=${1%/*}
RESULT_PATH=${SRC_PATH%/*}/out/

LEFT_IMG=${RESULT_PATH}${BASE}_left.${EXT}
RIGHT_IMG=${RESULT_PATH}${BASE}_right.${EXT}

say "Extracting pages..." 

if extpage $1 $LEFT_IMG $RIGHT_IMG > /dev/null; then
	say "Done." 
else
	say "Failed."
fi

echo $1
echo $LEFT_IMG
echo $RIGHT_IMG

See automator.png.

Save it as an application and invoke it using Folder Actions.

Yutaka Tsutano