Chennai Kutralam?

For the last few days it is raining in Chennai. After long time I am seeing waterfallsl in Tirusulam hills.

 

Chennai Kutralam?

Converting Images using ImageMagick – convert

Offlate I am uploading lot of images to my blog.  Normal images from digital camera contain lot of information like camera details, flash status etc. While putting on web I would like to reduce the size of the file so that it is easy for uploading as well as for viewing. I found convert tool of Image Magick very useful.

convert offers various options like strip, resize etc. The syntax is

convert -options input_image_file  output_image_file

Here is an example

---

$ convert -strip img_5735.jpg new_img_5735.jpg
$ ls -l
 total 2308
 -rwxr-xr-x 1 ram ram 1252058 2011-10-21 07:30 img_5735.jpg
 -rw-r--r-- 1 ram ram 1098785 2011-10-21 07:31 new_img_5735.jpg

---

From the above you can see merely stripping the info about the images saves considerable space. If you want to reduce image size  you can use resize option like this

convert -resize 50% img_5735.jpg  reduced_image.jpg

For converting many images I use this simple shell script

for file in `ls *JPG`

do

convert -strip -resize 50% $file new_$file

done

convert has several other options, see man convert.

To use convert you should install ImageMagick Package

Ranganathan Street?

Last Sunday I went through Ranganathan Street, T.Nagar at about 7.30AM. It brought me memories of childhood when I have seen this street so empty(off course lot cleaner).

And the same street at about 11.00am

Software Freedom Day 2011

The Indian Linux Users Group, Chennai will be celebrating Software Freedom Day on 17th September 2011 at Madras Institute of Technology, Chromepet, Chennai