Some Notes on Steganography-摘要

原文：
Abstract.
This essay presents some observations concerning low rate steganography in images where the amount of covert information is below one bit per pixel.
This discussion is restricted to paletted images, such as color GIF pictures.
Much of this essay is relevant to other cover messages, but the application is left to the reader.
It includes information and techniques for reducing the capability of an attacker to detect steganographic alterations in a cover image.
This discussion assumes the covert message is compressed and/or encrypted to have its statistics appear random or nearly random.

英文翻譯中文：
摘要。
這篇文章提出一些觀察是關於在圖像的低比率(?)資訊隱藏，那些數量隱藏資訊在每個像素的一位以下。
這次討論限於調色板，例如彩色(?)GIF圖片。
這篇文章與其他隱藏訊息是相關的，但應用留下給讀者。
它在隱藏圖像包括減少攻擊者的能力的資訊和技術查出資訊隱藏的改變。
這次討論假設隱藏訊息是壓縮過的並且/或者編碼令其統計資訊顯示隨機或接近隨機。

大致上是那樣翻譯...括弧問號是不知道那樣翻對不對=.=。