How to extract moving object in the case of moving camera is researched in this paper. At first, the background subtraction is implemented to detect the moving region in the case of motionless camera, and then the interested movin

An algorithm for small target detection with high speed was proposed. For optimization of algorithm, Particle Swarm Optimization (PSO) was utilized. In order to overcome some defects with PSO, a method about adaptive adjustment of

A geometrical feature point-based approach for tracking a certain region of the extended target is presented. In this approach, the geometrical feature point is used as the template for tracking, which is similar to template match

A novel algorithm is proposed to perform object tracking with multiple cameras in a distributed computing manner. Firstly, the maximum likelihood criterion is employed to model the multi-view tracking problem. Then, the likelihood

In order to get good general performance of optical joint transform correlation pattern recognition, a new reference shifted phase-encoded fringe-adjusted joint transform correlator for distortion invariant pattern recognition is

The design and fabrication of high aspect-ratio hard X-ray zone plates by X-ray lithography are studied. The X-ray lithography mask was fabricated by electron beam lithography, and the final hard X-ray zone plates were fabricated

CCD drift-scan technique can improve the survey efficiency of ground-based optoelectronic telescope system and the data precision of space targets. But, it is not suitable to survey the fast moving targets at present. Combinning w

For focusing mechanism of three-line stereo mapping CCD camera, the special techniques are required to ensure imaging in focus and keep the position accuracy of the inner orientation elements unchangeably. In order to implement re

Dynamic Alignment System (DAS) is one of the key technologies in space-borne Fourier transform spectrometer. The misalignment angle detecting is a key step of DAS. The working environment of space-borne Fourier transform spectrome

With regard to decreasing the volume and weight of laser ignition system, it is practically significant to realize system miniaturization by utilizing efficiently kinetic energy of flyer plate. According to Laser Supported Detonat

To improve the output laser beam quality of a positive-branch confocal unstable resonator, an auto-alignment and stabilization cavity laser system is presented. The tilt aberration measured by a Hartmann-Shack (H-S) sensor is take

By employing a continuous-wave broadband diode laser, a Self-mixing Cavity Ring-down (SM-CRD) technique is investigated for accurate reflectivity measurement of optical mirrors at 1064nm. The self-mixing effect is induced from the

A PolSAR image classification method which combines traditional polarization decomposition and subaperture analysis is proposed. Firstly, a full resolution PolSAR image is decomposed into several subapertures and two kinds of nons

For the partial motion blur caused by motion object in static background, the corresponding relationship among the object velocity, motion blur length, object range and camera parameter such as exposure time is built. A novel algo

Rock fractures have a strong impact on the radionuclide transport and retention. We sampled a number of rock specimens and then acquired the rock fracture images. The quaternion convolution can be used to detect the rock fracture

To improve the measuring precision of photoelectronic measurement system for curvature (important status parameter of cannon), a real-time distortion correction method with concentric circles as onsite standard is proposed and a s

The Direction-judgable Fiber Displacement Interferometer (DJFDI) was proposed on the basis of optical Doppler effect and heterodyne technique. The proposed interfermeter was assembled by using the components well developed in the

Referring to the disadvantage of permutation intercomparision method, such as complex operation and heavy workload in mutual check of two circle dividing devices, permutation ruled angle method is used to realize the mutual check

ZnO thin film was grown on the sapphire fiber-ending by Electron-beam Evaporation (EBE). The transmittance spectra show that the optical absorption edge red shifts obviously with increasing temperature. Based on negative temperatu

Based on the mechanism of Kerr effect in Brillouin Fiber-optic Ring Resonator(BFRR), the resonant cavity characteristic is researched theoretically when considering the Kerr effect, in order to get the possibility of occurrence of

Owing to the some fuzzy features of digital image in nature, a fast maximum fuzzy correlation criterion thresholding method was proposed based on the analysis of limitation of conventional fuzzy entropy method. Firstly, the image

In order to overcome the aliasing phenomenon commonly existing in real contourlet transform image denoising, some characters of complex contourlet transform whose structure is a cascading of dual tree complex wavelet and direction

Referring to the problem of slow convergence rate of current Total Variation (TV) image restoration algorithm, a class of fast TV image restoration algorithms was proposed by using multi-step iteration method. And, two kinds of mu

A new edge detection technique based on derivative algorithm in arbitrary directions is developed. Discrete representation of derivative for grey image and determination of optimal response direction are important to edge detectio

A method based on linear singularity analysis of image is presented. The improved method, called Directional Beamlet Transform (DBT) is better than traditional Beamlet transform about directional information of image and has the a

A fast and accurate method of automatic detection and location of the mouth is proposed according to the feature extraction of face identification. At first, mouth region is roughly detected by Adaboost in face image, so the range

The ICX274 is a diagonal 8.923mm interline CCD solid-state image sensor with a square pixel array and 2.01M effective pixels. Progressive scan allows all pixels' signals to be outputted independently within approximately 1/15 seco

Stressed Mirror Polishing (SMP) based on mechanics of elasticity is a novel aspheric fabrication technology that could transform aspheric optical fabrication technology into sphere optical fabrication technology. Considering glass