ejs

a snaphot of time

Archive for category MatLAB

OpenOffice.org, x64 and .NET interface

Jan 23

Posted by ejs in MatLAB, programming | 2 Comments

Here,’s the story short:

I need to create a series of graph for highly scientific data sets. The data is calculated in MatLAB, but the export of figures in MatLAB is a pain for me.

On the other hand OpenOffice.org seems to be the right tool for the job. The latest MatLAB has the function, called ‘xlswrite’. Happy with the fact, hoping it should write the XLS file I fire it up and…

Ouch. One must have Excell installed, as the data export goes through the ActiveX. If no Excell is found, the data is exported into CSV file, overwriting the file every time. Not the Right Thing. Read the rest of this entry »

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Colorization

Oct 19

Posted by ejs in MatLAB | No Comments

505510

Quite interesting article on image processing. The MatLAB source, presented on the site, need some minor enhancments. Authors may contact me, if they want ;) .
Attention: the program is really slow. I used ‘direct solver’, and it took almost 10 minutes to proceed the image.

JPEG-2000 in MatLAB

Apr 16

Posted by ejs in Hobbies, MatLAB, programming | No Comments

Any idea how to produce and read the JP2 file in MatLAB?
The easiest way should be writing middleware in Java to specific library. The things are complicated, as i need to get and modify data from every stage of encoding/decoding, like color space transformations, quantization, EBCOT (including bit-plane decomposition, bit-plane processing, encoding) and rate-encoders. Read the rest of this entry »