Orientation detection for NON-EXIF data/Text Images.
Problem:
We've a Enterprise level application which process images from pdf(s).
We've to represent those images to exact image Orientation with intelligence.
User May rotete images if Auto-Rotation Algorithm failed.
TESSERACT
tesseract(1) is a commercial quality OCR engine originally developed at
HP between 1985 and 1995.In 1995, this engine was among the top 3 evaluated
by UNLV. It was open-sourced by HP and UNLV in 2005 and has been developed
at Google since then.
{% highlight ruby %}
tesseract image - -psm 0
# >
# Orientation: 3
# Orientation in degrees: 90
# Orientation confidence: 4.76
# Script: 1
# Script confidence: 4.37
{% endhighlight %}
Orientation in degrees is the required amount of Orientation required for image. You may use any imgae-processing library say ImageMagick example command given below
{% highlight ruby %}
convert -rotate #{Orientation in degrees} rotest.jpg rotest90.jpg
{% endhighlight %}
And if you get stuck… Ask Here
email me rajeevsharma86@gmail.com
