Imaging technology

About: Imaging technology is a research topic. Over the lifetime, 1450 publications have been published within this topic receiving 26186 citations.

On the Usefulness of Combined Metrics for 3D Image Quality Assessment

Abstract: Due to the growing popularity of 3D imaging technology which can be observed in recent years, one of the most relevant challenges for image quality assessment methods has become their extension towards reliable evaluation of stereoscopic images. Since known 2D image quality metrics are not necessarily well correlated with subjective quality scores of 3D images and the exact mechanism of the 3D quality perception is still unknown, there is a need of developing some new metrics better correlated with subjective perception of various distortions in 3D images. Since a promising direction of such research is related with the application of the combined metrics, the possibilities of their optimization for the 3D images are discussed in this paper together with experimental results obtained for the recently developed LIVE 3D Image Quality Database.

Digital type electronically-engraved plate quality on-line monitoring device based on vision

Abstract: The utility model provides a digital type electronically-engraved plate quality on-line monitoring device based on vision, comprising ink cell imaging equipment and an on-line quality evaluating module based on the cell imaging equipment. The digital type electronically-engraved plate on-line monitoring device utilizes the projection converting technology of binocular robot stereo vision, the wavelet denoising technology, the CLAHE image enhancement technology, the grey level normalization technology, the sub-pixel precision threshold processing technology, the SIFT feature matching technology, the improved seed growing method, the dynamic programming matching technology and the three-dimensional imaging technology to obtain parameters of dimension, capacity, surface roughness and three-dimensional image characteristic of the net cells on the roller in real time, compares the parameters with the standard parameters, adjusts the motion state and operating parameters of the electronic engraver and carries out motion error compensation, thereby monitoring the electronically-engraved plate quality on line. The utility model has the advantages of simple structure, low cost, accuracy, high efficiency and multiple communication mode coexistence and realizes automatic trial engraving of an electronic engraver.

Electro-Optical Imaging Technology Based on Microlens Array and Fiber Interferometer

Abstract: To reduce the volume and weight of traditional optical telescopes effectively, this article proposes an electro-optical imaging technology based on a microlens array and fiber interferometer. Pairs of microlenses in the microlens array collect light and couple it into a fiber interferometer to form interference fringes. Then the amplitude and phase of a large number of interferometer baselines are analyzed to generate images. In this work, the principle of electro-optical imaging technology has been analyzed according to the partially coherent light theory. The microlens-array arrangement method and baseline pairing method have been optimized for arbitrary targets. From the simulation results, it was found that the imaging resolution depends on the maximum baseline length, and the imaging quality could be effectively improved by adjusting the Nyquist sampling density and baseline pairing method. This technology can provide an important reference for the miniaturization and complanation of imaging systems.

PERIODIC: state-of-the-art array imaging technology

Abstract: Array imaging is an emerging paradigm where a specially designed array of lenslets is employed to capture an ensemble of images of a subject, enabling the collection of significantly more information than with conventional single-lens imaging systems. Thin form-factor and wide angle of view are important additional characteristics of an array imaging approach.In this paper, we present an integrated optical-digital array imaging system, dubbed PERIODIC, capable of exploiting sub-pixel displacement, phase, polarization, dynamic range, and wavelength diversity to produce high definition images of various targets. The optical, sensor, and software components work in tandem to solve underlying complex image registration and reconstruction problems in near-real time. The optical hardware and software interface of a PERIODIC camera prototype are described.

Digital 3D/4D Ultrasound Imaging Array

Abstract: This chapter contains sections titled: Background Next-Generation 3D/4D Ultrasound Imaging Technology Computing Architecture and Implementation Issues Experimental Planar Array Ultrasound Imaging System Conclusion References