【摘 要】
：
Circular objects detection in digital images,a vital and recurring problem in image processing and computer vision,has many applications especially aiding vectorization of line drawing images,pupil an
【出 处】
：
Computer Aided Drafting,Design and Manufacturing
论文部分内容阅读
Circular objects detection in digital images,a vital and recurring problem in image processing and computer vision,has many applications especially aiding vectorization of line drawing images,pupil and iris detection,circular traffic sign detection,and
其他文献
针对目标标记算法的长耗时、大延迟严重影响目标跟踪的效果和实时性问题,提出了快速的基于行程累加的目标标记硬件加速算法.通过对像素进行行程编码,按照定义的累加规则对相邻行的行程进行累加运算,避免了标号冲突的发生,无需建立等价表,实现了一遍扫描完成连通域标记和连通域特征的计算.实验结果表明提出的算法资源占用较少,输出延迟小,与软件算法相比具有很高的加速比,有利于后续目标跟踪的高速实时处理.
以XRS-152/153影像增强器DR/CT成像系统为研究对象,在分析其输出像场畸变特性的基础上,从校正精度和校正实时性要求出发,采用空间坐标多项式变换方法进行畸变校正.同时,为了解决畸变校正算法计算量大、运算速度慢的问题,利用可编程图形处理单元(GPU,Graphic Processing Unit)并行计算和高速浮点计算特性,将图像映射为GPU中的纹理,采用多线程并行计算,使得校正算法在GPU
同一目标在不同观察视点下成像后外形可能有较大差异,因此三维目标多视点视图建模是目标识别的关键.针对该问题,提出了基于支持向量数据描述(SVDD,SupportVector Data Description)方法对目标特征进行描述.在视点球面上均匀采样获取目标全姿态图像,以SVDD方法求取在高维空间内包含尽可能多目标特征向量的最小超球体相关参数,得到数量较少的支持向量将作为目标多视点视图的最佳模型.
Image enhancement plays an important role in many applications of medical imaging.Image enhancement technologies can improve the qualities of medical images with low contrast and high level noise by s
Paper-cutting is one of the most fantastic Chinese folk arts.With the aid of computers,digital paper-cutting has become a popular topic in the field of NPR research.This paper will make a comprehensiv
In the last two decades,tangible user interfaces(TUIs) have emerged as a new interface type that interlinks the digital and physical worlds.TUIs show a potential to enhance the way in which people int
In computer graphic(CG),illumination rendering generated realistic effect at virtual scene is amazing.Not only plausible lighting effect is to show the relative position between of the objects,but als
This paper proposes a novel strategy based on fragment meshes of Shiue et al.for GPU rendering of composite subdivision surfaces.Two enumeration systems are established to label the primitives of each
By combining histogram of oriented gradient and histograms of shearlet coefficients,which analyzes images at multiple scales and orientations based on shearlet transforms,as the feature set,we propose
Point-based surface has been widely used in computer graphics for modeling,animation,visualization,simulation of liquid and so on.Furthermore,particle-based approach can distribute the surface samplin