How to re-size .bmp file in C\C++?

Question

I am doing a CBIR system as an assignment.There are 100 .bmp files,but they have different size,how to re-size them to a same size? Thanks.

Can you use some library? If so there are a bunch of libraries for this... — EdH, Jun 26 '12 at 02:51

score 1 · Accepted Answer · answered Jun 26 '12 at 02:57

1

Have a look at the CImg Library, it's quite easy to use. You can load your bitmap file then use one of the resize function.

answered Jun 26 '12 at 02:57

laurent

score 1 · Answer 2 · answered Jun 26 '12 at 05:30

1

Probably a overkill, but you can take a look on ImageMagick.

answered Jun 26 '12 at 05:30

KAction

To the contrary, I think this is a good answer. ImageMagick and a bash script and you'll be done in 2 minutes. – Mahmoud Al-Qudsi Jun 26 '12 at 05:32

score 0 · Answer 3 · answered Jun 26 '12 at 12:06

You should look at G'MIC, a command-line tool to batch image processing operations. It is even more advanced than ImageMagick's convert tool.

Basically, you can call it like this :

gmic *.bmp -resize 128,128,1,3,3 -outputp resized_

to resize all your bmp images into 128x128 color images, and save them with filenames prefixed by 'resized_'.

G'MIC is available for Linux, Windows and Mac, at : http://gmic.sourceforge.net

3 Answers3