zoom in on real-time preview?

[rockyraccoon]

Is there a fundamental limitation that makes it impossible to implement the zoom feature on the real time preview windows?
I know it's possible to define several previews etc... but that is really a workaround, not a solution.
Just curious if that's ever going to happen.
thanks!

[iksose7]

I too am curious about this, it would be handy to have the option to do so.

Callum

[cfranks]

I zoom the whole Real-Time Preview image by dragging the bottom-right corner to fill the screen.  It's better than nothing.

Charles

[Juan Conejero]

I know it's possible to define several previews etc... but that is really a workaround, not a solution.

It is just the opposite. Previews are essential components of PixInsight's graphical interface. They provide accurate results of processes on regions of interest, which can be evaluated both qualitatively and quantitatively. A preview can accumulate a sequence of processes that can be analyzed and reused with all intermediate states stored in RAM.

The real-time preview window is just a convenience feature. It can be useful for quick mask adjustments and histograms and curves transformations, but it is necessarily a rough approximation. Eventually we'll have to evolve the real-time preview interface, but we have many priorities to take care of before even thinking on that.

[cs_pixinsight]

How does one "accumulate" a sequence of processes on a preview?  Every time I run any process on a preview the previous changes are erased and only the current process results remain.

I must not be aware of something that allows multiple processes to be run on the same preview.

Thanks for the help,
Craig

[MikeOates]

How does one "accumulate" a sequence of processes on a preview?  Every time I run any process on a preview the previous changes are erased and only the current process results remain.

I must not be aware of something that allows multiple processes to be run on the same preview.

Thanks for the help,
Craig

The way to do this is, create a preview, click on the preview tab so it is displayed, now click and drag the preview tab to the desktop, this will create a new image that you can manipulate with as many processes and or scripts that you like.

Mike

[Juan Conejero]

How does one "accumulate" a sequence of processes on a preview?

1. Apply a (previewable) process to a preview. Now we say that the preview has a volatile state. A volatile state can be undone/redone with the Preview > Undo/Redo command. The volatile state will be replaced if you apply a new process to the preview. This is the "normal" preview operation.

2. Select Preview > Store. Now the preview has a stored state.

3. Repeat steps 1-2 to accumulate stored preview states. When a preview has one or more stored states, you can use the History Explorer window to navigate throughout the list of states, in a similar way to a main view. You can select Preview > Reset to destroy all stored preview states (similar to Image > Undo All, but destroyed preview states cannot be recovered).

[cs_pixinsight]

Juan, thank you for this clarification.  I had no idea this was possible and will be using this extensively going forward.

Craig

[jkmorse]

Juan,

These nuggets are priceless!  I just wonder how many more gems are floating around in your head.  Key for us is figuring out what the right questions are to pry them loose.  Sort of like PI Jeopardy      Hope you don't mind, but every time one surfaces, I drop it right into my cribsheet and share it with my distribution group.

Best,

Jim

[rockyraccoon]

Juan,
I think you are underplaying the utility of the real time preview feature.

If I have an image with many regions of interest, say 5, and I want to apply a noise reduction through a mask - it seems that you are suggesting that it would be best to create five separate previews, and five separate masks? And then what? apply the noise reduction five times and stack the five windows next to one another and compare them visually?
Unless I'm missing something obvious, it seems to me, a live preview window where I could zoom in and out, would be much more convenient.

I know it's possible to define several previews etc... but that is really a workaround, not a solution.

It is just the opposite. Previews are essential components of PixInsight's graphical interface. They provide accurate results of processes on regions of interest, which can be evaluated both qualitatively and quantitatively. A preview can accumulate a sequence of processes that can be analyzed and reused with all intermediate states stored in RAM.

The real-time preview window is just a convenience feature. It can be useful for quick mask adjustments and histograms and curves transformations, but it is necessarily a rough approximation. Eventually we'll have to evolve the real-time preview interface, but we have many priorities to take care of before even thinking on that.

[jkmorse]

Rocky,

Note you would only need one general mask which, if applied to the main image, will apply for all the previews, but the rest of your note seems right.

Best,

Jim