PixInsight - Alignment and Integration

Star Alignment

updated: updated: 2021-08-20


Purpose

Automatic image registration and mosaic generation using stars and deep space objects as alignment references (also called Star Alignment)


Image Registration is the process of matching two or more images of the same scene by superposition. This requires estimating optimal geometric transformations to align the images with respect to a common reference. Image registration is of crucial importance in all processing and analysis tasks based on the combination of data from sets of images. Some examples are image integration, multichannel image composition, shared information retrieval, change detection and image mosaicing. These tasks have applications in astronomy, medical imaging, remote sensing, cartography, real-time target recognition and computer vision, just to name a few.

Activation

Process 🡺 All Processes 🡺 Star Alignment

Input

Debayered light frames with "*_c_d" postfix  from folder "3_Debayered"

Output

aligned or registered images with a  “*_c_d_r” postfix in sub folder "4_Registered"

Previous Step

Debayer Function

Next Step

Image Integration

Tutorial

https://www.youtube.com/watch?v=2vXNXiw-yKE (Part 5)

  


Step

Description

Action

1

Star Alignment Settings

2

Load Target Images

  • for CCD images: add the "*_a_d" debayered subs from subfolder "debayer" 
  • for DSLR images: add the "*_a" subs from subfolder "approved"

3

Star Detection Parameters

  • Set star detection as shown on the left

4

Set Output Folder and Parameter

  • set the output folder and the Postfix "_r"

5

Set Star Matching Parameters

  • Set star matching as shown on the left

6

Run the Star Alignment Process

  • Click Apply Gobal to generate the registered images








Created with the Personal Edition of HelpNDoc: Streamline Your Documentation Creation with a Help Authoring Tool