简体繁体中英

Translating a Rectangle from Larger Image to Smaller One

原文 2017-07-03 11:08:26 8 1 c#/ .net/ math/ geometry/ system.drawing

我需要对大图像文件进行冗长的处理，因此在处理之前我会对其进行大小调整。在处理结束时，将返回调整后大小的图像内矩形的坐标。我如何将此矩形/矩形坐标转换为矩形在未调整大小的原尺寸图片中？

1 answers

Resizing is linear transformation, so new coordinate of some point is calculated as

 X_New = Ax * X_Old + Bx

To get it back, just use reverse transform

 X_Old = (X_New - Bx) / Ax

Copying a smaller array into a larger one

Fill a rectangle with a larger image with Cairo

Putting a smaller image within a larger image.

Placing a Smaller Texture2D into a larger one

WPF Translating a rectangle

Copying element from larger array to smaller sized array in C#

proper methodology for abstracting smaller class from larger class in c#

Taking pixels from one image and enlarging them on a new image to create a larger version of original

Fill rectangle with Image from resource

How to get an image from a rectangle?

暂无

暂无

The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.

Related Question Copying a smaller array into a larger one Fill a rectangle with a larger image with Cairo Putting a smaller image within a larger image. Placing a Smaller Texture2D into a larger one WPF Translating a rectangle Copying element from larger array to smaller sized array in C# proper methodology for abstracting smaller class from larger class in c# Taking pixels from one image and enlarging them on a new image to create a larger version of original Fill rectangle with Image from resource How to get an image from a rectangle?

Related Tags

粤ICP备18138465号 © 2020-2024 STACKOOM.COM