C＃保存巨大的图像 [英] C# Saving huge images

问题描述

我在尝试使用C＃保存大图像时遇到了困难（我说的是超过一千兆字节）。

I'm having difficulties when trying to save huge images with C# (I'm talking about over one gigabyte).

基本上我试图在部分中执行此操作 - 我有大约200个位图源，我需要一种方法在将它们编码为.png文件之前或之后将它们组合。

Basically I'm trying to do this in parts - I have around 200 bitmap sources and I need a way to combine them before or after encoding them to a .png file.

我知道这需要大量的RAM，除非我以某种方式直接从硬盘驱动器传输数据，但我也不知道如何做到这一点。

I know this is going to require lots of RAM unless I somehow stream the data directly from hard drive but I have no idea how to do this either.

每个位图源都是895x895像素，因此在编码后合并图像似乎并不容易，因为C＃不允许您创建大小为13425 x 13425的位图。

Each bitmap source is 895x895 pixels so combining the images after encoding doesn't seem easy because C# doesn't let you create a bitmap with size of 13425 x 13425.

推荐答案

此 PngCs库（免责声明：我是作者）让您逐行读取和写入巨大的PNG图像，这样您就不需要将完整的图像保存在内存中;也许你发现它很有用。

This PngCs library (disclaimer: I'm the author) lets you read and write huge PNG images line by line, so that you don't need to keep the full image in memory; perhaps you find it useful.

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