Scale image to completely fill bounding box

Posted by Larsenal on Stack Overflow See other posts from Stack Overflow or by Larsenal
Published on 2009-03-06T03:36:16Z Indexed on 2010/05/08 10:18 UTC
Read the original article Hit count: 270

Filed under:

algorithm

|

image

|

image-scaling

For instance, if I need to fill a bounding box that is 100px wide by 50px tall, the following input images would have the following behavior:

200w x 200h gets scaled down 50% and 25% gets chopped off the top and bottom.
200w x 100h gets scaled down 50% with no cropping.
100w x 200h gets is not scaled, but 75px get chopped off top and bottom.

This seems like it'd be a common resizing function, but I haven't been able to track down an example of the algorithm.

Will accept answer in any language including pseudo code. A link to a page with the answer is great too!

© Stack Overflow or respective owner

Related posts about algorithm

Jpeg Algorithm vs BMP Algorithm?

as seen on Super User - Search for 'Super User'
I'm just wonder, what the differences are between creating a BMP file algorithm and JPG file algorithm ? If you know the others images' format algorithm, please post them. Thanks. >>> More
word disambiguation algorithm (Lesk algorithm)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hii.. Can anybody help me to find an algorithm in Java code to find synonyms of a search word based on the context and I want to implement the algorithm with WordNet database. For example, "I am running a Java program". From the context, I want to find the synonyms for the word "running", but the… >>> More
Search algorithm (with a sort algorithm already implemented)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, Im doing a Java application and Im facing some doubts in which concerns performance. I have a PriorityQueue which guarantees me the element removed is the one with greater priority. That PriorityQueue has instances of class Event (which implements Comparable interface). Each Event is associated… >>> More
Is there any algorithm for finding LINES by PIXEL COLORS on picture?

as seen on Stack Overflow - Search for 'Stack Overflow'
So I have Image like this I want to get something like this (I hevent drawn all lines I want but I hope you can get my idea) I need algorithm for finding all straight lines on it by just reading colors of pixels. No hard math, no Haar, no Hough. Some algorithm which would be based on points… >>> More
collsion issues with quadtree [on hold]

as seen on Game Development - Search for 'Game Development'
So i implemented a Quad tree in Java for my 2D game and everything works fine except for when i run my collision detection algorithm, which checks if a object has hit another object and which side it hit.My problem is 80% of the time the collision algorithm works but sometimes the objects just go… >>> More

Related posts about image

Image anotation (Highlighting parts of an image, Scrubbing an image) using Javascript

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, We are working on an application and would like users to annotate an image. By annotation I mean, the ability to highlight parts of an image. Once the image is highlighted, and submit is clicked, the highlighted attributes (color, area highlighted) are submitted to the server to be stored in… >>> More
How I can add JScroll bar to NavigableImagePanel which is an Image panel with an small navigation vi

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have the following NavigableImagePanel, it is under BSD license and I found it in the web. What I want to do with this panel is as follow: I want to add a JScrollPane to it in order to show images in their full size and let the users to re-center the image using the small navigation panel… >>> More
Twitter Bootstrap styling conflicts with plug-ins like jqGrid and other third part libraries

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
Issues:The concern is that the Twitter Bootstrap framework is that some of their css selectors are simply too generic and have incompatibility issues and conflicts with most third party plug-ins and css libraries, like jQuery-UI and jqGrid.My most pressing concern is only with the generic selector… >>> More
PHP invalid image's and error handling

as seen on Stack Overflow - Search for 'Stack Overflow'
Using PHP's Image and GD functions you can use the following method to finally output the php image imagepng($image); Sometimes, for whatever reason the image may not be displayed typically the error is not with the image but with the actual php functions not executing successfully. However this… >>> More
apt-get install was interrupted

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am new to Ubuntu. I got the following lines after an interrupted apt-get install. Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/apt-auto-removal 3.13.0-29-generic /boot/vmlinuz-3.13.0-29-generic run-parts:… >>> More