虚拟LCD显示模块的设计

通过在BTF020单片机的RAM中建立缓冲区数组并对虚拟LCD的显示数据进行存储,然后通过单片机的串口将该数据传送给PC机,再用VB6.0语言对这些数据进行处理并构建虚拟LCD的界面,使其能够正确显示字符或者图形。实验结果表明,所建的虚拟LCD显示模块具有开发简便、快速、通用性强的特点。     

Non‐Local Image Reconstruction for Efficient Computation of Synthetic Bidirectional Texture Functions

Visual prototyping of materials is relevant for many computer graphics applications. A large amount of modelling flexibility can be obtained by directly rendering micro‐geometry. While this is possible in principle, it is usually computationally expensive. Recently, bidirectional texture functions (BTFs) have become popular for efficient photorealistic rendering of surfaces. We propose an efficient system for the computation of synthetic BTFs using Monte Carlo path tracing of micro‐geometry. We observe that BTFs usually consist of many similar apparent bidirectional reflectance distribution functions. By exploiting structural similarity we can reduce rendering times by one order of magnitude. This is done in a process we call non‐local image reconstruction, which has been inspired by non‐local means filtering. Our results indicate that synthesizing BTFs is highly practical and may currently only take a few minutes for BTFs with 70 × 70 viewing and lighting directions and 128 × 128 pixels.     

基于NURBS曲面和BTF的真实感图形绘制

本文结合NURBS曲面和BTF术的基本原理,探讨了二者的结合在真实感图形绘制上的具体应用,并给出了具体算法.     

含微量杂质的苯并三氧化呋咱安定性能研究

以苯并三氧化呋咱(BTF)及混有不同微量三叠氮三硝基苯(TATNB)、三氯三硝基苯(TCTNB)和叠氮化钠(NaN3)等杂质的BTF混合物作为研究对象，分别采用热重-红外(TG-IR)联机技术、加速量热仪(ARC)、5s爆发点实验和撞击感度实验等分析方法，研究了BTF及其混合物的安定性能，进一步探讨和评价了各种微量杂质对BTF安定性的影响。     

BTF药剂替代水玻璃在白钨回收生产中的应用

BTF药剂是我公司研制的一种多用途抑制剂,在采用浮选法从选钼尾矿中回收白钨生产时,替代传统水玻璃作脱药剂使用。产品指标与使用水玻璃相当,具有使用方便、安全高效、药剂使用成本低、性价比高、综合效益突出等优点。同时,该药剂还可作为一种高效脉石抑制剂,应用于其它选矿领域。     

织物的过程化双向纹理函数生成算法

针对编织式样具有近似规则的微观几何结构这一特点,提出了一种基于织物几何中结构建模的过程化双向纹理函数生成算法．首先从分析编织式样的结构人手,得出编织式样变形的基本单元——可见丝线段;然后通过对其进行数学建模并按编织式样进行组合,产生了织物的几何中结构;最后利用光线跟踪算法实现了编织式样在不同光照和视线条件下的纹理外观,从而生成织物的双向纹理函数纹理．     

BTF炸药分子的结构分析

苯并三呋喃氮氧化合物(BTF)是一种新型高性能炸药,其分子结构中不含有氢,分子结构具有一定的特殊性。本文利用傅里叶红外光谱(FTIRSpectroseopy),拉曼光谱(RAMAN Spectroscopy)以及有机质谱(MS)详细分析了BTF的分子结构,阐明BTF分子中的六元环介于苯环和饱和六元环之间,分子中含有“准硝基”结构,分子呈现共平面性以及强的共轭效应。     

Moving human tracking across multi-camera based on artificial immune random forest and improved colour-texture feature fusion

In multi-camera video tracking, the tracking scene and tracking-target appearance can become complex. To finish multi-camera tracking in these challenging, we first utilize an improved brightness transfer function to establish matching tasks of different cameras and to reduce the influence of brightness changes between multiple cameras. Then, we proposes an improved colour-texture feature fusion (ICTFF) that is composed of the colour features and texture features for multi-camera human tracking in non-overlapping field of view. It’s the first time to use artificial immune random forest with fully exploit the linear combination information of the feature and colour feature that can achieving the optimization of the number of decision trees and the effective classification of the target feature. Compared with state-of-the-art algorithms, our ICTFF algorithm can significantly improve the tracking accuracy in some complex scenes, such as changing the speed, changing the direction and appearance of the target.