I have 4 images taken in 4 different days.
I want to manually align the 4 images, because there are small shifts and movements each time I image.
Then I want to merge the 4 aligned images into a 4-channel composite image, where each day image corresponds to a different channel. For example, day1=R, day2=G, day3=B, day4=gray.
Can anyone kindly give me any advice how I can do this?
I don’t think I can use any automatic method for aligning, since the images are quite complicated and need human eye inspection to decide matching points.
I attached the 4 images, if anyone wants to see what they’re like.
Thank you very much!