扩展法 meaning in English
development method
Examples
- We call above two mechanization algorithm as jacobian function expension method . the jacobian function expension method is an effective method than the sine - consine method and the sn - cn method
称之为雅可比椭圆函数扩展法，它是一种比sine - cosine方法和sn - cn函数法，双曲函数法更有效和简单的方法。 - For the anticounterfeiting of printings ( such as certificate ) , the existent many ways ( such as rainbow holograms ) are not available as the need for special use : anti - distortion and anti - copy . basing in the double - random - phase transform , this article puts forward a new way that two - dimensional bar code is used as anticounterfeiting label with anti - printing ? scanning and anti - damage properties . the major job are : ( 1 ) . basing in the ascii codes , numerals and alphabets are encoded and subsequently transformed into two - value bar code matrix figure . later , using amplitude - based double - random - phase transform , the enciphered gray scale figure is formed . by computer simulation ( 4f system ) and printing as well as scanning ( 20 times ) , we get the result that the gray scale figure with little miscoding rate ( 0 . 0026 ) by “ matrix expanding way ”
本文主要开展了以下三项研究工作: ( 1 ) .用自定义编码方案,将数字和字母( ascii码)转换成二值条码图;对该图形进行振幅型双随机相位加密变换,得到原信息的加密灰度图;通过4f光学系统计算机模拟和打印-扫描实验,证明本文提出的“矩阵扩展法”灰度图具有较小的误码率,对于20次打印-扫描实验,误码率不大于0 . 0026 。 - It is proved that this approach reduces the entropy of information system and the mutual information of decision system . according to information theory , this approach is better than other completion methods , such as remove incompletes , mean / mode fill , combinatorial completion and similarity relation model
本文证明该拓展算法使信息系统的信息熵(决策系统的互信息)减小，在信息理论意义上优于删除法、扩展法、默认值替代法和相似模型法等常用的完备化处理方法。