过渡区是实际图象中介于目标和背景之间的特殊区域。

Transition region is a special region located between the object and background in real images.

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同时，在不灵敏频带内(如图象边缘区)引入一定噪声以达到整个恢复图象的噪声平滑。

Meanwhile, some noises are added into frequency bands where it is less visible in order to achieve noise smooth of overall reconstructing image.

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本文介绍了雾化区温度分布、金属粉末粒度及速度分布的在线测量技术，它们包括图象技术与非图象技术两大类。

Some on-line available techniques for measurementS of temperature profile and distribution of velocity and size of droplet and powder are introduced in this paper.

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