focal length

This method can be used for different focal length face detection .

该方法普遍适用于不同焦距的人脸检测。

Application for Changing Focal Length in the Process of Tracking Measurement

变焦距跟踪测量的应用

Design of wide angle space optical systems of long focal length

大视场、长焦距空间光学系统的设计

A New Method to test Focal Length Using Fourier Spectrum

一种利用傅立叶频谱测量透镜焦距的新方法

Study of Focal Length Measurement of Fourier Lens With Spectral Analysis Method

频谱分析法测量傅里叶透镜焦距的研究

Precision measurement of focal length of large optical system

大型光学系统焦距的精确测量

Design of long focal length space optical system with three reflective mirrors

长焦距空间三反光学系统的设计

The adjusting error analysis of the focal length measurement using Fourier spectrum

用傅里叶频谱测量焦距的调整误差分析

A New Manufacture Technique for Long Distance Focal Length Lens

一种新的长焦距透镜的制造方法

Method for Indirect Measuring Thermal Focal Length of Laser Crystal

一种间接测量全固化激光器热焦距的方法

A Camera Calibration Method of Varying Effective Focal Length by Neural Network

用神经网络变易有效焦距的摄像机标定法

CCD and Its Locating Focal Length Based on Fourier Transform System

基于二次付里叶变换的CCD精密定焦

Image Measurement System of Lens Focal Length with CCD Camera

透镜焦距的CCD图像测量系统

A Method for Measuring Distortion and Focal Length of Super Wide Angle Optical System

超广角光学系统畸变与主距的测量方法

The Analysis of Uncertainty in Thin Convex Lens 's Focal Length Measurement

薄凸透镜焦距测量的不确定度分析

Optic Design of Collimator with Large Aperture and Long Focal Length

大口径长焦距平行光管光学系统设计

Calibration method of camera with variable focal length based on single-view

一种基于单视图的可变焦相机标定方法

Focal length measurement of spherical lens using joint Fourier transform spectrum interference technique

利用联合付里叶变换谱干涉法测量透镜焦距

Measurement of the focal length of a thin lens by resistance thread

在电阻丝上测量薄透镜的焦距

Focus : plane of focus ; focal length ; and depth of field .

焦距：焦点平面，焦距和景深。

Measuring focal length and refractive index of a lens using Moire technique

云纹技术测量透镜焦距和折射率

Graphic analysis of plane parallel resonator and measure of the thermal focal length

平行平面激光谐振腔图解分析及热焦距的测量

Measurement of Long Focal Length by Using the Talbot Effect and Moire Technique

应用Talbot效应和莫尔技术测量长焦距

Design specific parameters of the resonator according to the basis of material thermal focal length .

之后根据工作物质热焦距设计谐振腔的具体参数。

Double - defocusing method for precise measurement of focal length

二次离焦法精确测量透镜焦距

Manufacturing for ruling concave metal grating with a long focal length

机械刻划长焦距凹面金属光栅的研制

We can therefore solve the problem by using different focal length in the process of tracking measurement .

如果能在跟踪测量过程中改用不同的焦距就能解决此问题。

Study of Focal Length Measurement of Fourier Lens

傅里叶透镜焦距测量的研究

The Application of CCD to Focal Length Measuring

CCD在焦距测量中的应用

The Study at Automatic Focusing Systems and Methods of Calibrated Focal Length Used in Precision Measurement

矫顽力自动测量装置用于精密测量的自动变焦系统及标校方法的研究