Help: How to convert a PNG format picture to a matrix?

[Amy Lee]

Hello,

How to convert a a PNG format picture to a matrix? I know that MATLAB has
its own functions to do that, how about it in Octave? My Octave is 2.1.50.

Thank you very much~

Regards,

Amy Lee

[Thomas Plehn]

Post by Amy Lee
Hello,
How to convert a a PNG format picture to a matrix? I know that MATLAB has
its own functions to do that, how about it in Octave? My Octave is 2.1.50.

you must use "imread" from octave-forge (see the previous thread "image
manipulation" and the answer of david bateman)

[Amy Lee]

Post by Thomas Plehn

Post by Amy Lee
Hello,
How to convert a a PNG format picture to a matrix? I know that MATLAB has
its own functions to do that, how about it in Octave? My Octave is 2.1.50.

you must use "imread" from octave-forge (see the previous thread "image
manipulation" and the answer of david bateman)

Thank you, but I use 2.1.50 version. Do I have to upgrade older octave? My
Linux Cent OS 3.

Amy

[David Bateman]

Post by Amy Lee

Post by Thomas Plehn

Post by Amy Lee
Hello,
How to convert a a PNG format picture to a matrix? I know that MATLAB has
its own functions to do that, how about it in Octave? My Octave is 2.1.50.

you must use "imread" from octave-forge (see the previous thread "image
manipulation" and the answer of david bateman)

Thank you, but I use 2.1.50 version. Do I have to upgrade older octave? My
Linux Cent OS 3.
Amy

The release date of Octave 2.1.50 is almost 5 years ago. If you don't
upgrade you'll be missing out on numerous bug fixes and features. As
Octave is supported be volonteers you can expect support for such an old
version of Octave. I'd suggest upgrading to Octave 3.0.1 if you can.

D.