saving image as png

[xridder]

Hi, i have a simple question, at least i hope so...:

i tried to save an image in png file format. I tried several possibilities, but always its saying, that its not an image.

I used "IMAQ Writefile" for this, but the same problem occures with similar VI's. Drawing the image with "IMAQ winddraw" works though.

So i want to know, if someone could tell me the simplest way of how i can save an image?

THX

[TiTou]

Hello,

I don't have LV 2010, could you post a screenshot of your code or repost it in LV 8.6 so I can try to help you.

Cheers

[xridder]

here is a screenshot. Its the part before the saving.

"IMAQ Array to Image", "IMAQ Winddraw", "IMAQ WriteFile" are the Head VI's.

[TiTou]

Hello,

Here is a little help.

I think you need to learn about the basics IMAQ functions, I suggest you have a look at some example (Help > Find Examples and then search for IMAQ).

Hope this helps

[xridder]

Hi THX at first for the help, but i realized with that, that the error is not really located in saving the image.

My option is quite similar, but it still tells me that "It's not a picture". So its maybe about the aqcuisition part.

I get an image from a camera. and display the image in the window i generated. As i saw from ur VI i have to use the array to save.

U used U8 to save. But the only possibility which i can display as an image with the camera is I16 (so im using this).

I think maybe thats the problem. If u have any suggestions on that, i'd be very grateful.

Greetings

[TiTou]

Hmmm... I'm a bit confused now. If you can display the image properly there is no reason you can not save it.

Can you post a screen shot of the whole code and specify where the error "not an image" appears?

[xridder]

i thought so too, but labview dont

[TiTou]

Oh... that's easy then, the function IMAQ dispose (that destroys the image) executes before you save the image.

To prevent that happening, link the output error connector of the save image VI to the input error terminal of the IMAQ dispose VI ; creating this dependency you are sure that the save will happen before the dispose.

Hope this helps

[xridder]

no that would be too easy... aahhhm....lol.....

of course u are right, shame on me...

ok, then one last question:

Why is the saved picture not the same colourpalette

like the displayed but always grey?

Greetings

[TiTou]

---

@xridder wrote:

Why is the saved picture not the same colourpalette like the displayed but always grey?

Greetings

---

Sorry, I never use color palettes... so I don't know.