Feasibility study on the design of a probe for rectal cancer detection

Rectal examination techniques are considered in terms of detection capability, patient acceptance, and cost reduction. A review of existing clinical techniques are considered in terms of detection capability, patient acceptance, and cost reduction. A review of existing clinical techniques and of relevant aerospace technology included evaluation of the applicability of visual, thermal, ultrasound, and radioisotope modalities of examination. The desired improvements can be obtained by redesigning the proctosigmoidoscope to have reduced size, additional visibility, and the capability of readily providing a color photograph of the entire rectosigmoid mucosa in a single composite view

Land classification of south-central Iowa from computer enhanced images

The author has identified the following significant results. Enhanced LANDSAT imagery was most useful for land classification purposes, because these images could be photographically printed at large scales such as 1:63,360. The ability to see individual picture elements was no hindrance as long as general image patterns could be discerned. Low cost photographic processing systems for color printings have proved to be effective in the utilization of computer enhanced LANDSAT products for land classification purposes. The initial investment for this type of system was very low, ranging from $100 to$200 beyond a black and white photo lab. The technical expertise can be acquired from reading a color printing and processing manual

Special Effects Photography

Summary of a variety of special effect techniques originally the basis for a special effects section in the Focal Encyclopedia of Photography. Includes things like Sabattier, matte-box, stroboscopic, kaleidoscopic, bas-relief, and many others

Получение фотоспектральных данных с использованием беспилотного комплекса авиационного спектрометрирования

Study of the Earth’s surface objects reflectance characteristics with unmanned aerial vehicles is one of the most actual remote sensing trends. Aim of this work was to develop a method for obtaining of photospectral data using unmanned aerial spectrometry vehicle.An adaptation of the cameras spatial resolution evaluating technique based on a specialized target photographic fixation was proposed. A method for synchronizing of the camera and spectrometer of the videospectral device was also proposed. It was based on an experiment with spectra and screen images recording. Different colors were sequentially displayed on the screen. The percentage contribution of each of colors to the “mixed” spectra was calculated. So the out-of-sync time estimation became possible. In addition the work proposed the method for combining images and spectra with their merging into photospectral images. The method allows to consider the aircraft displacement when linking the spectrometer field of view to the RGB image. The way for photospectral images combining based on the images key points detectors was also proposed.Spatial resolutions for 3 aerial vehicle cameras were obtained. The study showed that the spatial resolution decrease of Zenmuse H20T caused by the device carrier movement with a speed of up to 5 m/s can be ignored. The videospectral device camera and spectrometer out-of-sync time was evaluated. An automatic merging of a set of images using key points detection was made. The spectrometry areas were linked to the panoramic image. The reflectance coefficients were obtained for each of the areas in the range of 350–900 nm. The areas to image linking accuracy was 84.9 ± 11.6 %.A discrepancy between the angular spatial resolution values got experimentally and theoretically was revealed as a result of the cameras spatial resolution evaluating. This indicates the importance of the imaging equipment spatial resolution experimental evaluation. The videospectral device spectrometer and observation camera out-of-sync time evaluation made it possible to correct the data recording time. This led to the timing error standard deviation reduction from 142 ms to 15 ms. The way for the unmanned aerial spectrometry vehicle data obtaining in a photospectral representation was developed. The proposed methods and techniques can be used in similar unmanned systems.Исследование отражательных характеристик объектов на поверхности Земли с использованием беспилотных летательных аппаратов является одним из развивающихся направлений в дистанционном зондировании Земли. Целью работы являлась разработка способа получения фотоспектральных данных с использованием беспилотного комплекса авиационного спектрометрирования.Предложена адаптация методики определения пространственной разрешающей способности камер на основе фотофиксации специализированной миры. Также предложен способ синхронизации камеры и спектрометра видеоспектрального комплекса, основанный на проведении эксперимента по регистрации спектров и изображений экрана, где последовательно отображаются различные цвета. Предложен способ комбинирования изображений и спектров с объединением их в единое фотоспектральное изображение. Способ позволяет учитывать смещение летательного аппарата при привязке поля зрения спектрометра к изображению. Предложен способ объединения фотоспектральных изображений, основывающийся на сшивке изображений по особым точкам.Получены угловые разрешающие способности для 3 камер из состава беспилотного комплекса. Показано, что при движении беспилотного комплекса со скоростью до 5 м/с ухудшение разрешающей способности камеры Zenmuse H20T, вызванное движением носителя аппаратуры, можно не учитывать. Определено время рассинхронизации работы камеры и спектрометра из состава видеоспектрального комплекса. Проведена автоматическая сшивка ряда изображений по особым точкам с привязкой к сшитому изображению областей спектрометрирования (относительная точность привязки к изображению – 84,9 ± 11,6 %). Для каждой из областей спектрометрирования получены коэффициенты спектральной яркости в диапазоне 350–900 нм.В исследовании выявлено расхождение экспериментальных и теоретических значений углового пространственного разрешения, что свидетельствует о важности проведения экспериментальной оценки пространственного разрешения съёмочной аппаратуры. Определение времени рассинхронизации спектрометра и обзорной камеры видеоспектрального комплекса позволило осуществить коррекцию времени регистрации данных, что привело к уменьшению среднеквадратичной величины ошибки синхронизации со 142 мс до 15 мс. Разработан способ получения данных БЕКАС в фотоспектральном представлении

Catalog of lunar mission data

Several series of spacecraft were developed, designed, built and launched to determine different characteristics of the lunar surface and environment for a manned landing. Both unmanned and manned spacecrafts, spacecraft equipment and lunar missions are documented

Preliminary survey of historic buildings with wearable mobile mapping systems and uav photogrammetry

In cultural heritage, three-dimensional documentation of historic buildings is fundamental for conservation and valorisation projects. In recent years, the consolidated tools and methods: Terrestrial Laser Scanning (TLS) and close-range photogrammetry, have been joined by portable Mobile Mapping Systems (MMSs), which can offer significant advantages in terms of speed of survey operations at the price of reduced accuracy. The reduction of survey times and, therefore, costs makes the application of MMS techniques ideal for the preliminary stages of analysis of historical artifacts, when a rapid survey is indispensable for estimating the costs of conservation interventions. In this paper, we present a methodology for the expeditious survey of historic buildings and the surrounding urban fabric that is based on the use of an MMS and an Unmanned Aerial Vehicle (UAV). The MMS is the Gexcel Heron MS Twin color. It was used to survey two architecture of interest and the urban context surrounding them from the ground level. The UAV is the DJI Mini 2, used to integrate the terrestrial survey by acquiring the buildings' roofs. The case study presented in the paper is the survey of San Clemente and San Zeno al Foro churches, two historic churches in the city centre of Brescia (Italy). The result are a complete point cloud of the two buildings and a metric virtual tour of all spaces. These results were made available to the architects through the Cintoo web platform to plan future activities

Land Classification of South-central Iowa from Computer Enhanced Images

The author has identified the following significant results. Two enhanced false color negatives from multispectral scanner scenes, dated 15 April 1974 and 29 August 1972, were printed at a scale of 1:125,000 to form the basis for land use interpretations in the Wapello County, Iowa test site. The use of geomorphic principles proved valuable in the interpretation of the April scene to form valuable generalizations for planning purposes on soil associations, topography, alluvial valleys, and agricultural land use. The August scene was superior in providing information on urban extent, transportation networks, forest cover, and water bodies

高速ビジョンを用いたリアルタイムビデオモザイキングと安定化に関する研究

広島大学(Hiroshima University)博士(工学)Doctor of Engineeringdoctora