Select by coordinates?

[Byron Gale]

My digital camera (Sony DSC-F717) has a moving image mode called "multi burst".

This mode takes 16 sequential images at intervals of 1/7.5, 1/15, or 1/30 second. The 16 320x240 images are assembled into a 4x4 grid, and stored as a single 1280x960 JPG.

I would like to crop each of the 16 sub-images so that I can assemble them as layers to create a GIF animation.

Is there a way of specifying the pixel coordinates for a selection, to get the exact sub-image areas? Going after this by hand is making me wonder if I really want to have the animated GIF, after all...

Thank you.

Byron

[Jodi Frye]

Byron the marquee tool does have option for fixed pixel size. Look on the toolbar just above the screen...'style'...fixed size, then add your dimensions and click inside your image. You can move it around afterwards. Hope this was what you were asking for...if not maybe a brighter person will reply ...no doubt. ;))

[Jodi Frye]

oh, just keep duplicating your layer and delete as you go...you'll end up with 16 layers.

[Byron Gale]

Thanks, Jodi.

I have already constrained the rectangular marquee to 320x240, and marched it around the image - copying and then pasting into a new document.

But, try as I might, I can't seem to aim well enough to select the EXACT pixels I need, consistently.

There is always a frame, or two, that "side-steps" a jot while the animation plays.

I'm hoping that someone knows of a way to induce some precision into the exercize.

Thanks, again.

Byron

[Jodi Frye]

Oh I understand what you are saying now...the frames aren't lining up...right ? Well, is the subject in the precise same position in each shot ? probably not which means you are back to square one.....eyeball and hand co-ordination. I'm just not sure. I'd really have to see it to give you some better pointers...sorry ;(

[Byron Gale]

Paul,

Good call!! Using the grid as you suggested allowed me to copy out the exact pixels for each frame.

The image in the resulting animated GIF is now steady, apart from the stuff that's SUPPOSED to move (a ceiling fan... how exciting).

I'd still like to know if/how it's possible to specify exact coordinates for a rectangular selection, but until that day, this method will serve perfectly.

Many thanks!!

Byron

[Paul L UK]

Byron

Glad to here it.

As I said, I've never tried it, but when using other applications, the snap to grid was really annoying, so I thought why not see if it is useful. The theory seemed to fit.

Thanks for being a guinea pig

Paul