PixInsight Forum (historical)

PixInsight => Image Processing Challenges => Topic started by: rtemen on 2019 May 16 10:20:59

Title: Manually aligning jpg's to make a mosaic
Post by: rtemen on 2019 May 16 10:20:59

I have a set of 8 jpg shots of an asteroid moving through a constellation.
I would like to line them up and make a mosaic.
But, I actually want to just position the shots over each other manually and them form them into a mosaic.
So far, all of the suggestions seem to direct me to Star Alignment or Dynamic Alignment.
I am not able to get either of these tools to work.
Is there a way to just manually drag the pics over each other and then make a mosaic of the views as they sit on the screen?

Rich

Title: Re: Manually aligning jpg's to make a mosaic
Post by: Juan Conejero on 2019 May 16 10:52:40

Hi Rich,

DynamicAlignment should *always* work if properly used. Can you upload some of these images to test DA with them?

Title: Re: Manually aligning jpg's to make a mosaic
Post by: rtemen on 2019 May 16 11:08:55

I tried to use that, and was following a tutorial.
The result that I got when the process ran was a new frame that was cropped to only contained the area where the two pictures overlapped.
Perhaps I did not understand the suggested steps in the example.
What I am looking for is a set of pictures in a line where each picture over lays the previous one.

Rich

Title: Re: Manually aligning jpg's to make a mosaic sample jpg's
Post by: rtemen on 2019 May 18 19:58:13

Here are the first three files.

Rich

Title: Re: Manually aligning jpg's to make a mosaic
Post by: Andres.Pozo on 2019 May 19 01:53:08

If I have understood what are you trying to do, the best method is to generate a synthetic star field covering the area of all the images and then apply DynamicAligment to each image using the synthetic image as reference. The synthetic image can be generated using the script CatalogStarGenerator.

Title: Re: Manually aligning jpg's to make a mosaic
Post by: rtemen on 2019 May 19 23:47:48

Is there a detailed tutorial on how to use CatalogStarGenerator?

Title: Re: Manually aligning jpg's to make a mosaic
Post by: Andres.Pozo on 2019 May 20 01:02:57

Quote from: rtemen on 2019 May 19 23:47:48

Is there a detailed tutorial on how to use CatalogStarGenerator?

No, but it is as easy as filling the parameters and pushing OK  ;)