How to load a 32bppArgb bitmap of size (20000X20000) pixels in a windows form Application?

Question

1.00/5 (1 vote)

See more:

I am developing a GIS application in C# .Net 4.5. I need to load huge bitmaps in my canvas. In case of small images it works fine. Somebody pl. help me to load large images for image processing.

Posted 20-Mar-13 0:27am

kalyan chattopadhyay

Add a Solution

Comments

Sergey Alexandrovich Kryukov 20-Mar-13 10:35am

Not clear why is can be a problem. Anyway, you need to tag your UI library or application type.
—SA

Zoltán Zörgő 20-Mar-13 10:49am

Why are you reposting the same topic with different formulation? http://www.codeproject.com/Answers/564914/HowplusMemoryplusMappedplusFileplushelpsplustoplus

Bernhard Hiller 21-Mar-13 4:04am

Many GIS applications work on tiles of 256x256 pixels. I.e. a 2048x2048 bitmap is not used but 64 tiles instead.

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2013-03-20T04:38:00

Solution 1

Please see my comment to the question. You need to provide additional information. In the meanwhile, please see my past answer for some general idea, in case your images are really big:
Read Large Images in C#[^].

—SA

Posted 20-Mar-13 4:38am

Sergey Alexandrovich Kryukov

Dave Kreskowiak · Answer 2 · 2013-03-20T05:47:00

It's simple really. You can't. Windows GDI doesn't support images that big. Since no monitor on this earth can display such a huge image all at once, trying to load it all into GDI is pretty useless. Don't load what you really can't see.

You have to break the massive image down imput smaller individual images, say 250 pixels on a side and then load only those images you want and display them.