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cameras, etc ; beverage industry; black tea; color; computer vision; fermentation; flavanols; food chemistry; least squares; prediction; theaflavins; Show all 11 Subjects
Abstract:
... Fermentation is a key black tea processing step and makes an important contribution to quality formation. Current approaches to fermentation monitoring are costly or laboratory-based. Here, we first evaluated the potential of at-line computer vision for detecting fermentation quality in a tea factory. A self-built industrial camera was used to collect tea samples at various fermentation durations. ...
cameras, etc ; Fuchsia; computer software; food additives; food chemistry; liquid chromatography; mobile telephones; paper; sodium cyclamate; sugars; sweetness; tandem mass spectrometry; weight control; Show all 13 Subjects
Abstract:
... Cyclamate is an artificial sweetener with high sweetness and low calories, and is a common sugar substitute for weight control and diabetic patients. However, excessive cyclamate consumption is associated with various health disorders, and hence it is prohibited as a food additive in many countries around the world. The current research proposes a light-shading reaction microfluidic PMMA/paper det ...
... Nowadays, video tracking has taken a considerable part in monitoring systems. It allows identifying and follow every object in the camera field over time. While most of these algorithms are rather well suited to regular movements (following cars, pedestrians), they are often limited in more complex situations (high variations in speed, low detection rate, frequent shape variation). This paper prop ...
... Clogging is ubiquitous. It happens in a wide range of material processing and causes severe performance degradation or process breakdown. In this study, we investigate clogging dynamics in a single micropore by controlling the surface property of the particle and processing condition. Microfluidic observation is conducted to investigate particle deposition in a contraction microchannel where polys ...
... This paper focuses on the design of a new optical cone and pendulum scanning imaging mode for micro-nanosatellites. This kind of satellite uses a high-resolution camera with a small imaging plane to achieve high-resolution and ultra-wide coverage imaging through the three-dimensional motion of the camera’s wobble, satellite spin, and satellite orbital motion. First, this paper designs a single-cam ...
... The landing camera (LCAM) of Chang’e-4 lander provides a series of low (46 cm/pixel) to high (2.3 cm/pixel) resolution images, which are suitable for centimeter-scale craters. In this paper, we analyze the degradation of those small-sized craters to provide detailed information on the local geological evolution of the lunar surface. From the mosaicked descent image, 6316 craters were extracted and ...
... This paper presents a volcanic plume simulation and image generation framework, alongside a method for the tomographic reconstruction of volcanic ash plumes. The simulation framework facilitates the generation and processing of imagery analogous to that produced by real-world multi-spectral infrared observations of volcanic emissions. With this required imagery simulated, methods for the tomograph ...
... To reduce rice harvest loss and explore the performance of different combs for threshing prior to cutting, a three-dimensional tip disturbance comb and a three-dimensional bionic disturbance comb were designed. Based on high-speed camera technology and bench tests, the throwing mechanisms, distribution characteristics and loss rates of three kinds of combs, including primitive plane angular combs, ...
... An update to the previously published low resolution thermal imaging dataset is presented in this paper. The new dataset contains high resolution thermal images corresponding to various hand gestures captured using the FLIR Lepton 3.5 thermal camera and Purethermal 2 breakout board. The resolution of the camera is 160×120 with calibrated array of 19,200 pixels. The images captured by the thermal c ...
... Unmanned aerial vehicles (UAVs), which have made a name for themselves in photogrammetry studies in recent years, provide users with integrated camera systems. Identifying interior orientation parameters, such as focal coordinates, focal length and distortions, is an essential requirement for camera systems used for photogrammetric purposes. This process, which is called camera calibration, is off ...
... For geostationary satellite, small motion of the satellite platform will tremendously deviate the line of sight (LOS) of the imager and an image compensation method (ICM) is needed to ensure the accuracy of the image navigation and registration (INR) of such satellite. Some geostationary satellites share the same characteristic that the detectors are all small (FY-4 has 16 pixels in line), which m ...
... A miniaturized video satellite can observe the ground targets by recording real-time video clips in staring control mode and therefore obtains a unique advantage over traditional remote sensing techniques. To further extend the application of a video satellite, a strategy for simultaneously observing a group of ground targets is to be developed. To cope with the impacts of an uncalibrated camera o ...
... Satellite platform jitter is a non-negligible factor that affects the image quality of optical cameras. Considering the limitations of traditional platform jitter detection methods that are based on attitude sensors and remote sensing images, this paper proposed a jitter detection method using sequence CMOS images captured by rolling shutter for high-resolution remote sensing satellite. Through th ...
... For a multi-mode Earth observation satellite carrying a line array camera and a multi-beam line array LiDAR, the relative installation attitude of the two sensors is of great significance. In this paper, we propose an on-orbit calibration method for the relative installation attitude of the camera and the LiDAR with no need for the calibration field and additional satellite attitude maneuvers. Fir ...
David Duarte Cavalcante Pinto; Masahisa Yanagisawa; Marcelo Luiz do Prado Villarroel Zurita; Romualdo Arthur Alencar Caldas; Marcelo Domingues; Rafaela Lisboa Costa; Rodrigo Lins da Rocha Júnior; Fabrício Daniel dos Santos Silva; Heliofábio Barros Gomes; Helber Barros Gomes; Maria Luciene Dias de Melo; Lucas de Morais Teixeira; Ernande Roberto da Silva Júnior; Neftali Dias Cavalcante Junior; Dirceu Luís Herdies
... Two lunar flashes are reported and fully analyzed, with one of them fulfilling every criterion preconized in the literature for the characterization of an impact, including confirmation by two simultaneous observations. It happened at 07:13:46 UT on 14 December 2017, at the selenographic coordinates of 9.79° (±0.06°)N and 45.42 (±0.07°)E. The peak magnitudes in the R and V bands vary from 6.3 to 7 ...
... Camera estimation of fish size in aquaculture production and fisheries is crucial for enabling knowledge-based decision making. Automatic estimation of fish lengths on an individual and population basis are key steps to automate biomass estimation. We propose to use an underwater 3D range-gated camera for accurate fish-length estimation of free-swimming fish. The proposed algorithm requires no man ...
... Acoustic cameras are powerful instruments combining an optical camera with a microphone array to obtain information about power and location of noise sources. The main aim of this study is to identify key points in the application of an acoustic camera to the characterization of port noise. An experimental campaign was carried out in the seaport of Genoa. Based on this experience, a SWOT (Strength ...
... Visual Simultaneous Localization and Mapping (VSLAM) is a prerequisite for robots to accomplish fully autonomous movement and exploration in unknown environments. At present, many impressive VSLAM systems have emerged, but most of them rely on the static world assumption, which limits their application in real dynamic scenarios. To improve the robustness and efficiency of the system in dynamic env ...
cameras, etc ; biological rhythms; research; temperature; Show all 4 Subjects
Abstract:
... The aim of this study is to examine the daytime effects on flip turn performance [i.e., 3 m round trip time (3mRTT) as measure of turning performance] as well as global performance during a 50 m freestyle at maximal speed. Twelve college swimmers performed 3 × 50 m freestyle at maximum speed with a flip turn and glide in a 25 m pool in two experimental trials, one in the morning (08:00 h) and one ...
cameras, etc ; computer software; radiometry; reflectance; Show all 4 Subjects
Abstract:
... Extracting high resolution, shallow bathymetry from drone-based imagery using empirical methods is a novel approach that gains increasing interest. However, due to the rapidly expanding character of this field, there are not sufficient guidelines for optimal pre-processing of drone-based imagery regarding bathymetry retrieval. This study explores the suitability of imagery resulted from commonly u ...