You've got a picture of somebody's face, it's a million pixels. Each pixel has a range of values from zero to 256. I want to hash a face with some function into an integer.

你有一个人的脸部照片，它有一百万个像素，每个像素的值范围在0到256之间，我想用某个函数将一张脸部照片。

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You've got a picture of somebody's face, it's a million pixels. Each pixel has a range of values from zero to 256. I want to hash a face with some function into an integer.

你有一个人的脸部照片，它有一百万个像素,每个像素的值范围在0到256之间,我想用某个函数将一张脸部照片。

麻省理工公开课 - 计算机科学及编程导论课程节选

Also shown is a larger, (slightly) flexible model rugged enough to take a meaty fist square in the face without blinking a single pixel.

ENGADGET: E Ink shows off next-gen displays: high contrast, fast refresh, and rugged (video)