Kabushiki Kaisha Toshiba

Toshiba Medical Systems Corporation

Beijing Compo Advanced Technology Co., Ltd.

Pin Zhang

Hongfeng Ma

Hitoshi Yamagata

Lei Xu

Lirong Wang

Yanli Wang

Zhigang Wang

Jie Zhu

Yanbin Sun

Shaoming Zhang

Ning An

Huankun Zhang

Zhihua Zhu

Huijun He

Xixue Liu

Qiang Hu

Fuwen Zhang

Jiangsong Zhang

A SnBiSb series low-temperature lead-free solder and a preparation method thereof, which belongs to the technical field of low-temperature soldering. The lead-free solder includes by weight the following composition: 32.8-56.5% of Bi, 0.7-2.2% of Sb, with the remainder being Sn, wherein the weight percentages of Bi and Sb satisfy a relationship of b=0.006a2&#x2212;0.672a+19.61+c, wherein the symbol a represents the weight percentage of Bi, the symbol b represents the weight percentage of Sb, and the range of c is &#x2212;1.85&#x2264;c&#x2264;1.85. The solder alloy has a peritectic or near peritectic structure with a low melting point, and has an excellent mechanical performance and reliability, and applicable to the field of low-temperature soldering.

SnBiSb series low-temperature lead-free solder and its preparation method

The disclosure provides an image processing apparatus and method. The image processing apparatus may include: a filter for performing an iterative filtering on an input image; and an iterative filtering stopping device for determining whether to stop the iterative filtering according to a variation speed of the filtered image obtained from each iteration of the iterative filtering with increasing of iteration times.

Image processing apparatus and method

An image processing apparatus and method are disclosed. The apparatus may include: a wavelet transform device for performing wavelet transform on an input image to decompose the input image into a plurality of levels of different scales, each level including a low frequency component and a plurality of high frequency components; a compensation template generating device for generating a compensation template for each level according to the plurality of high frequency components in the level, the compensation template reflecting combination feature of the plurality of high frequency components; a de-noising device for de-noising the low frequency component of each level and performing edge compensation on the low frequency component with the compensation template to acquire a compensated low frequency component; and a wavelet inverse transform device for performing inverse wavelet transform with the compensated low frequency component and the high frequency components of each level to acquire a de-noised image.

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Beijing, China

Pin Zhang