Multispectral And Hyperspectral Image Acquisition And Processing

Multispectral and Hyperspectral Image Acquisition and Processing

Hyperspectral Imaging Technology in Food and Agriculture

Hyperspectral imaging or imaging spectroscopy is a novel technology for acquiring and analysing an image of a real scene by computers and other devices in order to obtain quantitative information for quality evaluation and process control. Image processing and analysis is the core technique in computer vision. With the continuous development in hardware and software for image processing and analysis, the application of hyperspectral imaging has been extended to the safety and quality evaluation of meat and produce. Especially in recent years, hyperspectral imaging has attracted much research and development attention, as a result rapid scientific and technological advances have increasingly taken place in food and agriculture, especially on safety and quality inspection, classification and evaluation of a wide range of food products, illustrating the great advantages of using the technology for objective, rapid, non-destructive and automated safety inspection as well as quality control. Therefore, as the first reference book in the area, Hyperspectral Imaging Technology in Food and Agriculture focuses on these recent advances. The book is divided into three parts, which begins with an outline of the fundamentals of the technology, followed by full covering of the application in the most researched areas of meats, fruits, vegetables, grains and other foods, which mostly covers food safety and quality as well as remote sensing applicable for crop production. Hyperspectral Imaging Technology in Food and Agriculture is written by international peers who have both academic and professional credentials, with each chapter addressing in detail one aspect of the relevant technology, thus highlighting the truly international nature of the work. Therefore the book should provide the engineer and technologist working in research, development, and operations in the food and agricultural industry with critical, comprehensive and readily accessible information on the art and science of hyperspectral imaging technology. It should also serve as an essential reference source to undergraduate and postgraduate students and researchers in universities and research institutions.

Optical Biopsy of Uterine Cervix Using a Multispectral Imaging Colposcope

Worldwide, cervical cancer is the most common form of cancer in females under 35 years of age and the second most common in females of all ages. Limitations of the existing diagnostic methods have led to the development of new diagnostic approaches. Acetic acid is a marker used for more than 70 years in gynaecology and can identify the transformation zone and detect acetowhitening changes identified as abnormal, while normal areas are not affected. A new Multispectral Imaging Spectroscopy System has been designed and developed (MIS-Colposcope). The MIS-Colposcopy is based on the quantitative and objective assessment of the acetic acid-cervical tissue interaction by means of the Multispectral Imaging Spectroscopy System (MIS-Colposcope). The method was used for the in vivo detection of cervical intraepithelial neoplasia and the results, from measurements of 123 women, indicated that there is a strong correlation between the histological condition of the tissue and the kinetics of the acetowhitening development. The best fit of the time course measurements of acetowhitening was achieved by the triple exponential function. Statistical analysis of several parameters that characterise the acetowhitening kinetics, had indicated that the combined evaluation of the parameters that express the duration and the intensity of acetowhitening differentiates sufficiently all the examined histological conditions. Estimation of the sensitivity and the specificity of this method indicate that its diagnostic performance is comparable or better than that of the existing methods. The authors' data show that this approach may be used as a sensitive and specific non-invasive colposcopic method for the diagnosis of cervical lesions and for the accurate classification of intraepithelial neoplasias.