Imaging technology

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

The case for separate sensor processing: Meeting the imaging challenge in a producing carbonate field in the Middle East

Abstract: Carbonate platforms in the Middle East continue to represent an important source of hydrocarbon reserves. For more than 20 years, interpretation and attribute extraction from time-based 3D seismic imaging products have been base geoscience data in this production setting. With the continuing advances in seismic imaging, geophysicists have an obvious interest in applying the most current algorithms to their projects. However, many of these carbonate reservoirs have accompanying imaging challenges that cannot be addressed solely through the application of new imaging technology. Alternative processing strategies must be considered, either to replace more conventional approaches and/or to prepare the data so that they conform to the limitations of the imaging algorithm.

Real-time three-dimensional laser fluorescence microscopic imaging device

Abstract: The invention relates to a real-time three-dimensional laser fluorescence microscopic imaging device. The real-time three-dimensional laser fluorescence microscopic imaging device is compatible with a traditional bright field illumination microscopic imaging working mode. The real-time three-dimensional laser fluorescence microscopic imaging device is divided into a laser excitation module, a bright field imaging illumination module, a digital detection module, an eyepiece observation module and a control module according to functions. A spatial light modulator is adopted to load a pyramid phase, so that a Gaussian-Bessel illumination light field can be generated at the backfield of a focusing objective lens. In a detection optical path, a twisted Dammann grating is additionally adopted so as to realize simultaneous imaging of a multi-surface object, fluorescence collected from the objective lens simultaneously images a plurality of axial planes to an electron-enhanced CCD detection surface through a multi-surface imaging technology, and therefore, real-time three-dimensional fluorescence imaging can be realized. The real-time three-dimensional fluorescence imaging technique has an important practical value in biological living tissue and living cell microscopic imaging.

3D Imaging in Construction and Infrastructure Management: Technological Assessment and Future Research Directions

Abstract: With rapid developments in 3D imaging technology, as well as the evolving need in Architecture/Engineering/Construction/Facility Management (AEC/FM) industry to understand various field aspects from a 3D perspective, several technologies, such as laser scanning, camera and RGBD camera, are becoming important components of civil engineers’ and architects’ toolbox. With improvements in efficiency and reduction in operational cost, new avenues are opening in leveraging 3D imaging sensors for construction and infrastructure management. In the light of this, there is a need to assess the achievements to date, especially with respect to unique challenging use case scenarios and requirements that construction and infrastructure management domains provide, and consequently identify potential research challenges that still need to be tackled. This paper targets doing such an assessment around several challenges faced when using 3D imaging to support construction and infrastructure management. It specifically discusses to what extent these challenges have been addressed and several approaches that are used in addressing them. It also presents current 3D imaging development trends and discusses briefly some challenges that are emerging due to increased application of 3D imaging techniques to highlight future research needs in this domain.

Label-free hyperspectral imaging and quantification methods for surgical margin assessment of tissue specimens of cancer patients

Abstract: Hyperspectral imaging (HSI) is a relatively new modality in medicine and can have many potential applications. In this study, we developed label-free hyperspectral imaging for tumor margin assessment. HSI data, hypercube (x,y,λ), consists of a series of images of the same field of view that are acquired at different wavelengths. Every pixel in the hypercube has an optical spectrum. We collected surgical tissue specimens from 16 human subjects who underwent head and neck (H&N) cancer surgery. We acquired both HSI, autofluorescence images, and fluorescence images with 2-NBDG and proflavine from the specimens. Digitized histologic slides were examined by an H&N pathologist. We developed image preprocessing and classification methods for HSI data and differentiate cancer from benign tissue. The hyperspectral imaging and classification method was able to distinguish between cancer and normal tissue from oral cavity with an average accuracy of 90±8%, sensitivity of 89±9%, and specificity of 91±6%. This study suggests that label-free hyperspectral imaging has great potential for surgical margin assessment in tissue specimens of H&N cancer patients. Further development of the imaging technology and quantification methods is warranted for its application in image-guided surgery.