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  • 常用LED显示屏术语 1、LED亮度   发光二极管的亮度一般用发光强度(Luminous Intensity)表示,单位是坎德拉cd;1000ucd(微坎德拉)=1 mcd ...
  • OpenCV+Python–RGB转HSI的实现 ... C++或MATLAB版本的,自己要用到python里,所以就写写python版本的。 HSI颜色模型是一个满足计算机数字化颜色管理需要的高度抽象模拟的数学模型。HIS模型是从人的视觉系统出发,直接使用颜色三要素–色调(Hue)、饱和度(Saturation)和亮度(Intensity,有时也翻译作密度或灰度)来描述颜色。 RGB向HSI模型的转换是由一个基于笛卡尔直角坐标系的单位立方体向基于圆柱极坐标的双锥体的转换。基本要求是将RGB中的亮度因素分离,通常将色调和饱和度统称为色度,用来
  • Python实现RGB与HSI颜色空间的互换方式 ... 学期数字图像处理课的第一份作业好久没懂python手都快生了,调了好久才搞出来。 HSI颜色模型是一个满足计算机数字化颜色管理需要的高度抽象模拟的数学模型。HIS模型是从人的视觉系统出发,直接使用颜色三要素–色调(Hue)、饱和度(Saturation)和亮度(Intensity,有时也翻译作密度或灰度)来描述颜色。 RGB向HSI模型的转换是由一个基于笛卡尔直角坐标系的单位立方体向基于圆柱极坐标的双锥体的转换。基本要求是将RGB中的亮度因素分离,通常将色调和饱和度统称为色度,用来表示颜色的类别与深浅程度 ...
  • Collimated quasi-monochromatic beams of accelerated electrons in... We demonstrated experimentally the formation of monoenergetic beams of accelerated electrons by focusing femtosecond laser radiation with an intensity of 2 1017 W=cm2 onto the edge of an aluminum foil. The electrons had energy distributions peaking in ...
  • Diffractive Multi-beam Ultra-fast Laser Micro-processing Using a... ... (CGHs). The CGHs calculated by appropriate algorithms are displayed on the SLM to split an input laser beam to a number of beamlets and digitally manipulate their positions and intensity. The undesired damage by the energetic zero order beam can be avoid
  • Quality evaluation of phase reconstruction in LED-based digital ... An approach, based on the correlation between the intensity distribution of object wave of the directly recorded by charge-coupled device and the one reconstructed by computer, is proposed to evaluate the quality of the phase reconstruction in light ...
  • Statistical properties of Er/Yb co-doped random Rayleigh feedbac... In this Letter, we experimentally investigate fast temporal intensity dynamics and statistical properties of the cladding-pumped ... using the optical spectral filtering method, strong and fast intensity fluctuations with the generation of extreme events are ...
  • 基于注意力机制和卷积神经网络的低照度图像增强 ... RGB (red-green-blue)颜色空间变换到HSI (hue-saturation-intensity)颜色空间,然后结合注意力机制和CNN构建A-Unet ...
  • Efficient phase-locking of 60 fiber lasers by stochastic paralle... ... and out-of-phase modes. Only one photoelectric detector was used to detect the combined power in the far-field central lobe of the in-phase mode state. When the phase controller was in a closed loop, the contrast of the far-field intensity pattern wa
  • New kind of Hermite–Gaussian-like optical vortex generated by cr... ... of a cylindrical lens. We also investigate the propagation characteristics of an HGOV, which has a Hermite–Gaussian-like intensity distribution but still retains the orbital angular momentum. Furthermore, we derive the Fresnel diffraction integral of an ...