In view of the problem that the pictures on commodities packaging may have distortion in watermark detection process, studies are carried out and a new blind digital watermark algorithm is proposed.
针对商品包装图像在水印检测过程中图像会发生变形的问题展开研究，提出一种基于非均值量化系数特征不变的盲数字水印方案。
Metallography detection is a technology that studies about the relationship between the structure and the performance of metal material based on the metallographic theory.
以金相学理论基础，金相检测是一种用于研究金属材料内部结构组织与材料性能之间关系的检测技术。
The former studies on distributed constant false alarm rate (CFAR) detection, especially for distributed ordered statistics (OS) CFAR detection, are limited on simple ideal conditions.
对分布式恒虚警（CFAR）检测系统，特别是分布式统计排序（OS）CFAR检测系统的研究，往往局限于较为理想的简单条件。
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