模糊图像 [英] Obfuscating images

问题描述

我想分发一些图像，不允许其他人看到它们，除非他们正在使用我的程序。我的意图是使用JPG文件，其中我将更改标题，以便其他图像查看器不能再读取它们。例如我可以删除字符7-10这是JPG的魔术签名。稍后，我的程序将重建标题并显示JPG文件。

I want to distribute a few images and not allow others to see them unless they are using my program. My intention will be to use JPG files in which I will alter the header so other image viewers cannot read them anymore. For example I can delete the bytes 7-10 which are the magic signature for JPG. Later, my program will reconstruct the header and show the JPG file.

问题：如何在飞行中执行此操作，而无需阅读损坏的JPG文件，恢复标题，将好的文件保存到磁盘，然后重新加载为好的JPG文件？

Question: how do I do this on the fly, without reading the "broken" JPG file, restoring the header, saving the good file to disk and then re-loading it as a "good" JPG file?

推荐答案

加载破碎文件转换为TMemoryStream ，补丁内存中的字节，并使用TGraphic.LoadFromStream（）加载固定的JPG文件。

Load the "broken" file into a TMemoryStream, patch the bytes in-memory, and use TGraphic.LoadFromStream() to load the fixed JPG file.

这篇关于模糊图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！