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基于OpenGL的制匙机仿真系统研究 被引量:1
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作者 匡洪文 白火华 周宏甫 《机电工程》 CAS 2009年第7期43-45,共3页
为了建立各种型号的钥匙库,解决互开率问题,利用QT软件包并采用OpenGL对CNC制匙机进行了系统仿真,提出了制匙机仿真系统的结构模块,并详细讨论了钥匙加工过程的建模、显示、消隐、重绘等内容,实现了人机界面的互换,并创建了刀具和匙坯... 为了建立各种型号的钥匙库,解决互开率问题,利用QT软件包并采用OpenGL对CNC制匙机进行了系统仿真,提出了制匙机仿真系统的结构模块,并详细讨论了钥匙加工过程的建模、显示、消隐、重绘等内容,实现了人机界面的互换,并创建了刀具和匙坯数据库。研究结果表明,经过加工走刀和零件切削过程仿真,可大大缩短新产品开发周期,提高质量,并满足了锁具生产厂家批量小、交货快等方面的加工要求。 展开更多
关键词 数控加工仿真 OPENGL 制匙机 QT
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A New Quantum Gray-Scale Image Encoding Scheme
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作者 mosayeb naseri mona abdolmaleky +3 位作者 fariborz parandin negin fatahi ahmed farouk reza nazari 《Communications in Theoretical Physics》 SCIE CAS CSCD 2018年第2期215-226,共12页
In this paper, a new quantum images encoding scheme is proposed. The proposed scheme mainly consists of four different encoding algorithms. The idea behind of the scheme is a binary key generated randomly for each pix... In this paper, a new quantum images encoding scheme is proposed. The proposed scheme mainly consists of four different encoding algorithms. The idea behind of the scheme is a binary key generated randomly for each pixel of the original image. Afterwards, the employed encoding algorithm is selected corresponding to the qubit pair of the generated randomized binary key. The security analysis of the proposed scheme proved its enhancement through both randomization of the generated binary image key and altering the gray-scale value of the image pixels using the qubits of randomized binary key. The simulation of the proposed scheme assures that the final encoded image could not be recognized visually. Moreover, the histogram diagram of encoded image is flatter than the originM one. The Shannon entropies of the final encoded images are significantly higher than the original one, which indicates that the attacker can not gain any information about the encoded images. 展开更多
关键词 quantum image quantum encoding gray-scale image
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