Go Back   IceInSpace > Equipment > Software and Computers

Reply
 
Thread Tools Rate Thread
  #1  
Old 18-09-2020, 11:18 PM
raymo
Registered User

raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
how to enlarge an image for cropping

Can somebody help this poor comp illiterate great grandpa find a simple way
to enlarge my images to bring the subject closer. I have some pics with sufficient resolution to keep a sharp image with the subject much closer.
I can downsize pixelwise in Irfanview, but the image retains the same physical dimensions, I want the subject larger.
raymo
Reply With Quote
  #2  
Old 19-09-2020, 01:13 PM
Nikolas's Avatar
Nikolas (Nik)
Dazed and confused

Nikolas is offline
 
Join Date: May 2012
Location: Melbourne
Posts: 3,253
If you use drizzling when combining and processing your images you have effectively enlarged them with decent resolution. Then you can crop what you don't need.
Reply With Quote
  #3  
Old 19-09-2020, 01:52 PM
raymo
Registered User

raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
Hi Nikolas, I am no longer active in AP. It is just that I have a number of images [both astro and terrestrial] in my archives that are of high enough quality that I could enlarge them significantly and they would remain sharp.
raymo
Reply With Quote
  #4  
Old 19-09-2020, 02:04 PM
Merlin66's Avatar
Merlin66 (Ken)
Registered User

Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
Raymo,
Have you looked at upsizing the image in Irfanview, then cropping in 3D paint ( much easier than with Irfanview).
Reply With Quote
  #5  
Old 19-09-2020, 02:19 PM
Nikolas's Avatar
Nikolas (Nik)
Dazed and confused

Nikolas is offline
 
Join Date: May 2012
Location: Melbourne
Posts: 3,253
or try this online one https://www.photoenlarger.com/
Reply With Quote
  #6  
Old 19-09-2020, 03:51 PM
raymo
Registered User

raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
Thank you both, given me something to have a go at.
raymo
Reply With Quote
  #7  
Old 19-09-2020, 07:11 PM
Startrek (Martin)
Registered User

Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 5,990
Raymo
I open Windows photo viewer , select image then open Paint ( not 3D paint ) crop and resize

Here’s my procedure in Windows 10

How to Crop and Resize an Image using Paint

1/ Select image in Windows Photo viewer
2/ Open image in Paint
3/ Go to frame size slider bottom right and slide to 50%
4/ On top tool bar left side , press dotted rectangle above “Select”
5/ Move mouse pointer over image and draw a square or rectangle over the area you want to crop
6/ Go to top tool bar and press “Crop”
7/ Image will be cropped but remain the same frame size
8/ To resize , press “Resize” and type in 50% for Horizontal and Vertical boxes
9/ Then select “Save As” , rename
and save in original folder
10/ Image will be cropped and resized ( same image size but smaller frame size )

Cheers
Martin
Reply With Quote
  #8  
Old 19-09-2020, 07:30 PM
raymo
Registered User

raymo is offline
 
Join Date: Sep 2011
Location: margaret river, western australia
Posts: 6,070
Hi Martin, I tried the link that Nikolas posted, and it works a treat, giving you
four images produced by different algorithms, so you can choose the one you like best, simple crop and download, and that's it.
cheers raymo
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 08:17 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Testar
Advertisement
Bintel
Advertisement