Image Crop using aspect ratio

How to crop and save a image with aspect ratio 4:3 in asp.net C#

Re: Image Crop using aspect ratio

Refer these

http://www.switchonthecode.com/tutorials/csharp-tutorial-image-editing-saving-cropping-and-resizing

http://stackoverflow.com/questions/4648456/save-image-to-file-keeping-aspect-ratio-in-a-wpf-app

Re: Image Crop using aspect ratio

i need the center crop of the image like in the microsoft picture manager.

Re: Image Crop using aspect ratio

Check out this article

http://weblogs.asp.net/gunnarpeipman/archive/2009/11/03/using-asp-net-and-jcrop-to-crop-images-online.aspx

Re: Image Crop using aspect ratio

Do anyone know how to change (any)width and (any)height to standard 4:3 ratio ???????

Re: Image Crop using aspect ratio

Hi,

There are lots of programs with which you can actually resize/crop an image in C#, the earlier posts can help you with this, coming to the aspect ratio part 4:3 is nothing but standard 1024 X 768 pixels... So in your program you can always set the width to 1024 and height to 768

Here is the link for all aspect ratios http://en.wikipedia.org/wiki/Display_resolution

And remember aspect ratios are calculated by find the greatest common divisor of the resolution.. in this case the 256 is the greatest common divisor of 1024 and 768

256 * 4 is 1024 and 156 * 3 is 768.... So you can very well go ahead and use the above programs to get to the 4:3 ratio...

Thanks

Arun

Re: Image Crop using aspect ratio

Hi,

      Double aspectRatio = 4.0 / 3.0;
      int newHeight = (int)((imge.Height) * aspectRatio);
      int newWidth = (int)((imge.Width) * aspectRatio);
      int cropY = (int)((imge.Height) / 2.0 - newHeight / 2.0);
      int cropX = (int)((imge.Width) / 2.0 - newWidth / 2.0);

      i have done like this but this is not converting to standard ratio 4:3 and even x and y is not

     helping to crop image at the center. Can any one pls help.???

Re: Image Crop using aspect ratio

http://www.dotnetthoughts.net/2009/12/07/image-cropping-in-asp-net-with-jquery/

http://geekswithblogs.net/SanjayU/articles/asp.net-image--photo-cropper-in-c.aspx

Re: Image Crop using aspect ratio

See this link, it will guide you how you can generate good quality thumbnail and image scaling:-

http://zeeshanumardotnet.blogspot.com/2010/06/generate-high-quality-thumbnail-images.html

Re: Image Crop using aspect ratio

I need a method to crop using aspect ratio like microsoft picture manager. I need the method to convert original image with new height and new width.

Re: Image Crop using aspect ratio

have you tried the code which I shared, i am able to generate good quality thumbnails with that code.

Re: Image Crop using aspect ratio

An error while saving the thumbnail image

"A generic error occurred in GDI+."

Re: Image Crop using aspect ratio

Check out this thread http://forums.asp.net/t/1395596.aspx/1

Re: Image Crop using aspect ratio

Thanks alot it worked