【摘 要】
:
Color information is very important in setting the style of images. In this paper, a color correction method based on dominant color extraction is proposed to eliminate the color inconsistence between multi-view images. With the theory of basic color cate
【机 构】
:
FacultyofInformationScienceandEngineering,NingboUniversity,Ningbo315211
【出 处】
:
ChineseOpticsLetters
论文部分内容阅读
Color information is very important in setting the style of images. In this paper, a color correction method based on dominant color extraction is proposed to eliminate the color inconsistence between multi-view images. With the theory of basic color categories, dominant colors from the categories are extracted for reference image and input image, and then the corresponding color mapping relationships are built. Experimental results show that the proposed method is quite effective.
其他文献
The ant colony optimization (ACO) algorithm based on the probability density function is applied for the retrieval of spherical particle size distribution (PSD). The spectral extinction data based on the Mie theory and the Lambert–Beer Law served as input
参众两院武装部队委员会正设法解决几个互相矛盾的空间高能激光武器发展途径,同时决定资金的分配。在为委员会采取行动的准备过程中,国会议员们会见了国防部激光技术管理人员、白宫官员和幕僚,力求解决在批准方面的争端。
Data signals consisting of arbitrarily modulated sequences of pulses are extensively used for processing and communication applications. The spectral extent of such signals is determined by the bandwidth of the individual pulses in the sequence, which imp
Enhancing resonance frequency of strong optical injection-locked semiconductor lasers is experimentally studied. Resonance frequency is increased from 4.1 to 53.9 GHz by the optical injection locking (OIL) technique. We experimentally demonstrate that res
为了提高高功率激光装置光学元件的抗损伤能力,通过分析经历了上百发次高通量351 nm激光辐照的熔石英光学元件损伤的微观形貌,结合光束传输理论研究了大口径熔石英元件的紫外损伤机理。研究表明,目前加工工艺条件下引起紫外损伤的最主要原因是光学元件亚表面划痕,它能导致光学元件初始损伤阈值降低数倍甚至数十倍;损伤污染和衍射效应将导致损伤进一步加剧;小尺度自聚焦是处于终端组件后端40 mm厚度透镜体损伤的主要损伤机理,前期光学元件损伤形成的毫米和亚毫米衍射点引入的调制是导致小尺度自聚焦的根源,而输出光束的近场不均匀性
Preparation and characterization of a liquid level sensor based on macro-bending coupling of fibers are demonstrated in this Letter. The sensitive component can be obtained through a twisting and twining structure of transparent cladding plastic fibers. T
High-speed light source is realized for decoy-state quantum key distribution (QKD) at telecom wavelength of 1.55 μm. By implementing two different electrical pulses together and triggering with 100 MHz pseudorandom number to drive the laser diode, the sig
数字全息术中,全息像的再现过程由于受激光散斑、系统噪声以及全息图边沿衍射等效应的影响,再现像质量降低,因而制约了其在相位测量中的应用。将切趾方法应用到数字全息相位测量中,用Hanning窗对全息图进行切趾处理,以抑制再现像中的边沿衍射效应及噪声的影响。模拟实验和实物实验结果表明,切趾方法能够很好地抑制边沿衍射效应以及噪声对再现物光波相位的影响,提高了相位测量的精度。
为了进一步实现傅里叶变换光谱仪的微小型化,在基于多级微反射镜的傅里叶变换光谱仪结构中引入微透镜阵列,利用微透镜阵列对由多级微反射镜调制的各级次的干涉光场单元进行同步收集。光场相位采用空间调制的方式,因此系统的波前像差会导致各级次干涉光场单元的子波前产生不同程度的畸变。建立含有波前像差的光场与多级微反射镜和微透镜阵列相互作用的标量衍射理论模型,计算表明波前像差会导致各级次干涉像点的强度产生不同程度的衰减,同时在复原光谱中引入低频噪声。通过分析发现,干涉像点强度的衰减是各干涉光场单元子波前像差的斯特列尔比调制
随着汽车工业的飞速发展,对冷轧薄板表面质量特别是表面微观形貌提出了更加严格的要求.本文针对从摩擦学角度优化设计的轧辊表面球冠状微凸新形貌,依据脉冲激光参数特性及快速熔凝理论,提出了脉冲激光毛化处理的新机制.试验中,采用500 W脉冲Nd:YAG固体激光器对轧辊表面进行毛化处理,通过对激光毛化新机制的分析和研究,很好的选取和匹配了激光加工工艺过程和脉冲激光参数,最终成功获得了预先设计的形貌及尺寸.并进一步对其表面硬度状况进行了测量和分析.研究表明,辊面形貌和粗糙度能够得到精确?目刂?微凸的激光毛化新形貌具有