The 2D entropy threshold method was used to segment the wax crystal images.

首先，采用分块二维熵图像阈值法进行蜡晶图像的自动阈值分割；

youdao

Images with the crystal ball can be stationary or move around as if viewing a screen.

水晶球图像能被定住或来回晃动好像看荧光屏屏幕一样。

youdao

Whether two-dimensional IMAX film, or three-dimensional IMAX 3D film, its very clear and bright images and crystal clear surround sound entertainment to the audience physically and mentally.

不管是IMAX二维电影，还是IMAX 3D三维电影，其异常清晰明亮的图像和水晶般清澈的环绕音效给观众带来身心娱乐。

youdao

LG's Ultra HD TV boasts 8 million pixels (3840 x 2160) to generate crystal clear images at a resolution four times higher than existing Full HD.

ENGADGET: LG's 55-inch OLED HDTV ships in Korea next week, has 100 pre-orders so far

This amazing feature works automatically and compensates for unintended camera movements or slow shutter speeds to deliver crisply rendered, sharp and crystal clear images which without might ruin an otherwise perfect shot.

ENGADGET: BenQ's 14 megapixel S1420 camera touts mega O.I.S., 720p movie mode

The new camera is completely redesigned with incredible optical performance, yet amazingly it's 25 percent smaller than the camera in iPhone 4S. The new iSight camera in iPhone 5 features a sapphire crystal lens cover that is thinner and more durable than standard glass with the ability to provide crystal clear images.

ENGADGET: iPhone 5 officially announced with 4-inch display, A6 CPU and LTE for $199 on September 21st