which way to save an image is faster? spreadsheet or png file?

[abingdonbell]

Hi, I am currently working on a program doing some image processing. Basically, I am saving bunch of images without processing from my optical system and do processing afterwards. So, I wish I could find the fastest way to deal with image files I/O. Currently, I am think of writing/reading images into/from spreadsheet or png files using IMAQ vi. Does anybody has some experience or guess which way is faster? Or any other option even better? I am going to do a little test later. Just want to see what do you think. 

Thanks for reading:)

Jingyu

[smercurio_fc]

I don't think the speed question is the right question here. The real question is what format do you want to save it in. A PNG file gets you an image file. A spreadsheet file (I'm assuming you're talking about the tab-delimited text files that are created with Write to Spreadsheet File) gets you the raw data. Which format do you want?

[Andrey_Dmitriev · Accepted solution]

Hi, Jingyu

Just measure it. Simple benchmark can be created in few minutes:

Andrey.

Message Edited by Andrey Dmitriev on 12-05-2008 05:42 PM

[abingdonbell]

that's cool. cheers

[abingdonbell]

And  smercurio…,  you are right. I just found out png is not what i want. I have to save them into raw. T...