Image distortion correction includes spatial correction and gray-level correction.

图像畸变校正包括空间位置校正和灰度校正。

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The invention also provides a water level measurement method and a water level correction method.

本发明还提供了一种水位测量方法和水位校正方法。

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The general theories of gray correction methods for the medical ultrasonic image are introduced in this paper, including gray level correction, gray level transformation and histogram correction.

介绍了超声医学图像灰度校正常用方法的基本原理，这些方法主要有灰度级校正、灰度变换及直方图修正。

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So is a decline of 10% to 19% (an intermediate-level correction) or a drop of 20% or more (the typical definition of a bear market).

FORBES: Stock Market Correction Arrives, Magnitude Uncertain

When a bark is detected, the lowest level of correction is given, and corrections will rise until the dog stops nuisance barking.

ENGADGET: Garmin announces new dog collars, talks up 'Bark Odometer'

In Corning's wholly owned display business and Samsung Corning Precision, total glass volume is expected to be consistent to down low-single digit percentage sequentially, depending on the level of normal seasonal inventory correction expected from panel manufacturers.

ENGADGET: Corning touts 1 billion Gorilla Glass devices: that's a lot of face-saving surfaces