基于OpenGL读取bmp实现纹理映射的方法

纹理映射技术在虚拟现实（VR）场景模拟中有着非常重要的作用,使用0penGL编程接口,能够增强三维场景绘制的真实性。研究了0penGL纹理映射对纹理图像的特殊要求,提出了一种区别于传统读取bmp图像的方法,从而实现了纹理映射,非常简单实用。     

液晶显示模块图像的编辑以及点阵数据的提取

采用点阵液晶模块显示有效地增强了智能仪表的输入输出功能。显示图象可以用Windows画笔软件方便地编辑,但生成bmp文件中的点阵数据与模块显示所需的点阵数据却具有不同的结构。在分析、对比二者差别的基础上,给出了一种利用bmp文件直接提取可供液晶模块显示的点阵数据的方法:首先将画笔所编辑的图象顺时针旋转90°,使两种数据在字节的级别上取得一致;然后截取数据块并重新排序;经过适当的格式处理,最终生成可供仪表监控软件中汇编程序调用的文本式点阵数据表。     

BMP3 Affects Cortical and Trabecular Long Bone Development in Mice

Bone morphogenetic proteins (BMPs) have a major role in tissue development. BMP3 is synthesized in osteocytes and mature osteoblasts and has an antagonistic effect on other BMPs in bone tissue. The main aim of this study was to fully characterize cortical bone and trabecular bone of long bones in both male and female Bmp3^−/− mice. To investigate the effect of Bmp3 from birth to maturity, we compared Bmp3^−/− mice with wild-type littermates at the following stages of postnatal development: 1 day (P0), 2 weeks (P14), 8 weeks and 16 weeks of age. Bmp3 deletion was confirmed using X-gal staining in P0 animals. Cartilage and bone tissue were examined in P14 animals using Alcian Blue/Alizarin Red staining. Detailed long bone analysis was performed in 8-week-old and 16-week-old animals using micro-CT. The Bmp3 reporter signal was localized in bone tissue, hair follicles, and lungs. Bone mineralization at 2 weeks of age was increased in long bones of Bmp3^−/− mice. Bmp3 deletion was shown to affect the skeleton until adulthood, where increased cortical and trabecular bone parameters were found in young and adult mice of both sexes, while delayed mineralization of the epiphyseal growth plate was found in adult Bmp3^−/− mice.     

基于Asp的WEB站点中验证码应用

基于Asp的网站验证码技术,由2个24位位图格式的图像文件和一段相关的代码组成.系统通过分别从该2个图像文件中读取一小块阵列数据组合形成一张随机数字的图片,发送到浏览器形成图片验证码.该方法能降低网站被恶性攻击的机率,并提高站点登录的安全性.