Top PDF Image Intensification by a Low Level Light Exposure Before, During, and After an Image Exposure

Image Intensification by a Low Level Light Exposure Before, During, and After an Image Exposure

Image Intensification by a Low Level Light Exposure Before, During, and After an Image Exposure

difference film a producing represents on be density a and density could at step versus exposure, #12 graph exposed delay exposure time from four additional exposure fog, plus points six[r]

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RETRACTED: The Validation of a Week Long Questionnaire against Objective Measures of Light Exposure among a Sample of University Students

RETRACTED: The Validation of a Week Long Questionnaire against Objective Measures of Light Exposure among a Sample of University Students

Myopia, known as short-sightedness, is a refractive defect of the eye in which light generates the images focus before the retina when there is no accommodation. Nowadays, the prevalence of myopia in East Asian cities, such as Singapore, Hong Kong and Taiwan, was increased to more than 20% in primary students and caused more than 80% of young adult [1]. High levels of myopia are associated with increased risk of other visual im- pairment. Hashemi and his colleagues pointed out that there was a significant high percentage of myopia in these people with nuclear and posterior subcapsular cataract [2]. Moreover, the blue mountains eye study also showed that glaucoma was higher by 4.2% of eyes with low myopic than nonmyopic eyes [3]. Myopia could al- so have significant costs for optical correction [4]. Therefore, level of concerns about developing myopia is in- creasing.
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Colour consistency in computer vision : a multiple image dynamic exposure colour classification system : a thesis presented to the Institute of Natural and Mathematical Sciences in fulfilment of the requirements for the degree of Master of Science in Comp

Colour consistency in computer vision : a multiple image dynamic exposure colour classification system : a thesis presented to the Institute of Natural and Mathematical Sciences in fulfilment of the requirements for the degree of Master of Science in Computer Science at Massey University, Albany, Auckland, New Zealand

The ‘Uneven Moderate 2’ test scenario provides a greater challenge for the system, as the right edge of the scene is moderately darker than the left. This can be seen by the input images above, where the colour patches on the right is easily visible from Camera C, while too dark to see in Camera B. This scenario scored 89.342% accuracy, with 0.807% false positives. These results are visible by no large patches of missing or inaccurate colour. It is noticeable that the lighter colours, light green and light blue, begin to start misclassifying at this low light level. Although not classified as another colour, the system simply does not classify as any result.
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Oestrus response and pregnancy rate after oestrus synchronization with exposure to light and heavy handling in Nelore cattle

Oestrus response and pregnancy rate after oestrus synchronization with exposure to light and heavy handling in Nelore cattle

It is possible that these stressors influenced steroid concentrations. However, the level of cortisol decreased gradually over time. This is because cows can be adapted to the handling procedures and became familiar with the workers. Thus they experienced less stress. In addition, animal handlers became more experienced in restraining and handling the cows. Therefore, causing less stress to animals. It was reported that cows that have been trained and habituated to a handling procedure may be completely calm and have baseline cortisol with normal heart rates during handling and restraint (Grandin, 1997) and is similarly reported to horse mares (Berghold et al., 2007). It is assumed that the animals in the present study adapted and became more familiar with the human contact and handling of the workers with time. This explains the improved oestrus response and pregnancy rate and the gradual decline in cortisol concentration in all cows throughout the experiment. It was observed that there was a negative correlation between cortisol and P 4 hormone level after AI in the estrous cycle in
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The Effect of Ultraviolet Light Exposure on Proximate Composition, Amino Acid, Fatty Acid, and Micronutrients of Cold Water Fish, “Barilius Vagra”

The Effect of Ultraviolet Light Exposure on Proximate Composition, Amino Acid, Fatty Acid, and Micronutrients of Cold Water Fish, “Barilius Vagra”

Fishes (Barilius vagra) were collected from different aquatic bodies (ponds and Ganga River, Uttarakhand, India), in order to investigate the effect of temperature and water quality on fish composition. To avoid ambiguity, due to environment and habitat, the fish were collected from the exactly same place and during the same time duration (in the first week of May). The weight and length of the fish were recorded after collection. The fishes having a length around 12 cm were selected for analysis. Fish were properly washed with distilled water and scales were taken out from the fish body. After drying for about 48 h at 25 o C, the dried fish scales were
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Vehicle Image Classification using Image Fusion
          at Pixel Level based on Edge Image

Vehicle Image Classification using Image Fusion at Pixel Level based on Edge Image

2.6 Vehicle Image classification - Vehicle image classification is done based on the coarseness and contrastness of the image. The coarseness and contrast of the image can be determined based on the frequency of the edge. The coarseness means the number edge pixels in the edges image. If number edge pixels are few then the vehicle image will come under fine-grain otherwise coarse- grain vehicle. The contrastness means the sum of magnitudes of all the edge pixels in a edges image. If the sum is high enough then the image is said to be high contrast otherwise low contrast. Find out the coarseness and contrastness of the image and find out the distance of that with images that are considered under training data set in a data base by using Euclidean distance measure. Perform matching the distance calculated for the given vehicle edge image with training data set. if distance is least after comparison with training data set then classify that vehicle image as low-mortar vehicle otherwise high- mortar vehicle type.
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Increased variability of motor cortical excitability to transcranial magnetic stimulation in migraine: a new clue to an old enigma

Increased variability of motor cortical excitability to transcranial magnetic stimulation in migraine: a new clue to an old enigma

treatment with antiepileptic drugs can be predicted from early increase in MT and intracortical inhibition measured with TMS after several weeks of treatment [50]. It is possible that change or rate of change in MT may be useful markers to predict responsiveness of MP to pharmacological or non- pharmacological interventions. Moreover, TMS itself has been suggested to be a potential novel non-pharmacological intervention to treat MP, due to beneficial effects reported after single-pulse stimulation of the visual cortex in patients with migraine with aura [51, 52]. If TMS is to be used to predict clinical improvements, then MT and fluctuation in MT are candidate measurements. More studies are necessary to define whether TMS can be an adjuvant tool to stratify patients for specific therapeutic strategies.
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Image Processing Method on Radiographic Image of Piping using MATLAB: Enhancement and Detection Process

Image Processing Method on Radiographic Image of Piping using MATLAB: Enhancement and Detection Process

Radiography is one of the Non-Destructive Testing (NDT) techniques to find out internal incoherence existing in the material or component. This method has a lot of advantages over the conventional radiographic film which includes the ability to digitally transfer image, immediate image preview, cost reduce due to film processing steps and time efficiency. Ekinci S and Ron PINCU [1][2] reviewed the use of digital radiography in the evaluation of defects in welds. However, there are some problems in digital radiography system must have a problem which effect the imaging quality. Chen and Lu [3] reviewed the problems occurred in the digital radiographic system. Most of the digital radiography image is in poor quality. Suitable technique is important to improve image quality for better inspection.
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Human pupillary light reflex during successive irradiation with 1-ms blue- and green-pulsed light

Human pupillary light reflex during successive irradiation with 1-ms blue- and green-pulsed light

the ISI increased to 600 ms [24]. Similarly, another study showed that the pupillary constriction amplitude in re- sponse to two 100-ms pulses tended to increase as the ISI increased up to 1024 ms under four melanopsin ex- citations (blue or red with 15.2 or 11.4 log photon/ [cm 2 s]) [25]. Notably, the pupillary constriction the au- thors observed in response to pulses of lower-intensity blue light increased with increasing ISIs up to 512 ms and then plateaued through an ISI of 1024 ms [25], which is in accordance with the results of the present study. The irradiance intensity of the light we applied in the present study was higher than was that used in Joyce’s study; additionally, the pulse width was much shorter and the wavelength of the second pulse was dif- ferent. Given these factors, we may assume that the in- fluence of light on ipRGCs was comparable.
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Synthesis and Characterization of Porphyrin and Formazan Dyes as Potential PDT Sensitizers.

Synthesis and Characterization of Porphyrin and Formazan Dyes as Potential PDT Sensitizers.

I would like to thank Dr. Freeman for his initial interest in me as a student (the reason for my continuing studies at the College of Textiles), for his guidance and support, especially when the synthesis was not working. His trust and confidence in me allowed me to reach my potential, taught me to believe in myself, and to work independently. I would like to thank Dr. Lindsey for agreeing to be the minor representative on my advisory committee, and Dr. Hinks and Dr. Pasquinelli for being my committee members. Their support and advice helped advance my research. Special thanks to Dr. P. for her encouragement, inspiration, and guidance, specifically at difficult times, in my personal and professional lives. My gratitude is extended to Dr. Khan and Dr. Motsinger-Reif for their invaluable time while serving as a Graduate School Representative during my preliminary and final exams.
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Perturbation and restoration of the fathead minnow gut microbiome after low-level triclosan exposure

Perturbation and restoration of the fathead minnow gut microbiome after low-level triclosan exposure

The gut microbial community of individual fish is likely to be most strongly structured by the interacting effects of 1) host environment and diet, 2) host developmental stage, and 3) triclosan exposure history. The baseline communi- ties were markedly different than days 7 to 21, and this difference made a strong contribution to the overall beta- diversity temporal trajectory (Figure 3a). While almost all OTUs present at days 7 to 21 are also present in the base- line (day 0) samples, because we did not sequence samples of water (autoclaved) or food (commercially prepared), we cannot definitively rule out water or food as a source of the few new OTUs we detected. All exposure groups re- ceived food and water from identical stock at each feeding or water change, so any new OTUs that might have arisen from these sources are expected to be evenly distributed across cohorts. The baseline samples were collected im- mediately upon arrival in our facility, and differing com- munity structure more likely reflects differing conditions in the rearing facility from which the fish were acquired, as diet, water chemistry, and stress have been suggested to be predictive of fish gut microbiome structure [24,25,77,80]. However, even when the highly divergent baseline sam- ples were removed from consideration, communities were in large part structured by time point/developmen- tal stage (Figure 3b). Our study was designed to examine the effect of short-term triclosan exposure on the en- dogenous gut microbiota of developing, larval fish. Gut microbiomes of developing vertebrates, including fish, are dynamic, showing complex successional processes [82-85]. Thus, the temporally dynamic communities observed here, in addition to effects of triclosan exposure, likely respond to the combined effects of host developmental processes and initial changes to environment.
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Characterization of Lignin before and after Exposure to the Gastrointestinal Tract of Ruminants

Characterization of Lignin before and after Exposure to the Gastrointestinal Tract of Ruminants

The aim of this study was to characterize the structure of lignin isolated from Eucalyptus grandis before and after exposure to the gastrointestinal tract of sheep to see if it can be us[r]

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Personal exposure to static and time varying magnetic fields during MRI procedures in clinical practice in the UK

Personal exposure to static and time varying magnetic fields during MRI procedures in clinical practice in the UK

The majority of the participants were females (71%) and radiographers (71%). All participants worked with cylindrical MRI systems, with magnet strengths of 1.5 T, 3.0 T or both. Participants worked, on average, about 8 h per shift in the MRI facility. Radiographers and most OHCP spend their whole working shifts in the MRI facility, mainly in the control room where exposure was minimal. The longest shift duration, about 12.5 h, was observed for a radiographer, followed by an OHCP (12.4 h). Exposure of medical staff (for this purpose including anaesthetists) was only measured during work in the MRI facil- ity, since full shift measurements would have been dif fi cult logis- tically and there is no exposure elsewhere. This generally resulted in shorter measurement durations, with the shortest being 0.7 h for a radiologist present during scanning of one patient only. Radiographers reported that they work in MRI, on average, about 30 h per week, followed by OHCP (23 h), while medical staff (18 h) and anaesthetists (3 h) were in the MRI facility for much shorter periods. In total, 4809 individual MRI scans were recorded during the measurement sessions. In these 4809 recorded MRI scans, radiographers were involved in 2210 scans, OHCPs in 427, anaesthetists in 39 scans and other medical staff in 39 (only staff for whom exposure measurements were performed are included in these fi gures).
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Palladium Plating on Telephone Plugs and Sockets52-56

Palladium Plating on Telephone Plugs and Sockets52-56

Palladium plated and plain nickel silver contacts before and after the gas exposure test Top -palladium plated (left) and nickel silver (right) before exposure.. Bott[r]

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High-dynamic-range imaging for cloud segmentation

High-dynamic-range imaging for cloud segmentation

One of the earliest attempts to capture more of the DR of the sky was done by Stumpfel et al. (2004). They presented a framework in which a set of exposure settings along with neutral density filters is used to generate an high-dynamic- range (HDR) composite map. Kenny et al. (2006) used a digital camera to estimate the whole-sky luminance distribu- tion for different sky conditions. Attempts to provide a full spherical HDR view of the sky–cloud condition were done by mounting hemispherical sky cameras on the top and bot- tom of airships (Okura et al., 2012). Gryaditskya et al. (2014) used HDR captures of the sky to recover absolute luminance values from images. To the best of our knowledge, there is no prior work that uses the capability of HDR imaging for better segmentation of sky–cloud images.
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Die zeitliche Änderung der radialen Elektronendichteverteilung beim Theta Pinch  EUR 511  = The temporal change of the radial electron density distribution during a theta pinch  EUR 511

Die zeitliche Änderung der radialen Elektronendichteverteilung beim Theta Pinch EUR 511 = The temporal change of the radial electron density distribution during a theta pinch EUR 511

In a time interval of 400 nsec during a discharge an image converter made three pictures exposure times of 10 nsec each.. Up to 100 nsec after the first com­ pression, the experimental r[r]

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Comparison of different image intensifiers used for combustion measurement

Comparison of different image intensifiers used for combustion measurement

of this camera is resolution of 2048x2048 pixels with a bit depth of 12 bit. A pair of image intensifiers made by Hamamatsu company was used. These are C9547-03 type and C10880-03 type. The image intensifiers are mostly devices using photoelectric emission, luminescence and sometimes secondary electron emission. The basic elements of the image intensifier are also based on these phenomena. This is a photo cathode ensuring the electron emission when absorbing the radiation. On the opposite side there is a luminescent screen. Between these two elements, an electron accelerating field is being created. [4] Accelerating electrons hit the screen and luminescence occurs. The luminescent screen has time required for dimming, depending on the material used. [7] The maximum repetition rate of the intensifier depends on the length of time necessary for dimming. The repetition rate affects usability of the intensifier for individual applications and, last but not least, the quality of the data. A micro channel plate (MCP) using secondary electron emission is placed between the photo cathode and luminescent screen. MCP significantly increases the number of electrons hitting the screen, and thus the profitability of the image intensifier. Compared intensifiers have similar design, except that a different type of luminophore is used; P43 for C9547-03 type and P46 for C10880-03 type. Other parameters of the intensifiers are listed in the following Table 1., which confirms the similarity of image intensifiers input. The Fig. 3 shows evolution of the relative intensity of the intensifier’s output signal depending on time for different gating times. The figure shows a big difference in the decay time of individual luminophores. However, the manufacturer does not provide information about the course of the absolute value, and it is very difficult to determine, from the data available, which of the image intensifiers provides better quality data for measurement or visualization with the help of the LIF and Chemiluminescence method.
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Guided Image Filter Using Multi-Exposure Image Fusion: A Patch-Wise Approach

Guided Image Filter Using Multi-Exposure Image Fusion: A Patch-Wise Approach

A lo t of research has been contrib u ted in th e area o f o p timizatio n o f d es ig n . M OST ap plications in co mp u ter v is io n an d co mp u ter g raphics involve image filtering to suppress and/o r extract content in images. We propose a patch-wise ap proach for multi-exposure image fu s io n (M EF) u s in g g u id ed imag e filter. A key s tep in o u r ap proach is to decompose each colour image patch in to three conceptually independent co mp o n en ts : s ignal strength, signal structure and mean intensity. Up o n processing the three components sep arately b ased on patch strength and exposedness measures, we u niquely reconstruct a colour image patch an d p lace it back into the fu s ed imag e. Un like mo s t p ixel-wise M EF meth o d s in th e literatu re, th e p roposed algorithm does no t req u ire s ig n ifican t p re/post processing steps to improve visual quality o r to reduce spatial artefacts. Moreover, th e n o v el p atch decompos itio n allo ws u s to h an d le RGB co lour channels jointly and thus p ro d u ces fu s ed imag es with more vivid colour appearances u s in g g u id ed imag e filter. Exten s iv e exp erimen ts d emons trate th e s u p erio rity o f th e p ro p o s ed alg orithm both qualitatively and quantitatively with g u ided filter. Hybrid thres h o ld in g is ap p lied o n remain in g s u b b an d s (LH, HL an d HH).Th e p ro p o s ed wo rk will b e imp lemen ted u s in g M A TLA B R2015a.
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Super Field-of-View Lensless Camera by Coded Image Sensors

Super Field-of-View Lensless Camera by Coded Image Sensors

The simulation results are shown in Fig. 6(b). The optical PSF was a blurred image of the amplitude transmittance of the front sensor. To emulate photon-shot noise, the sparse-coded image was multiplied by Poisson noise, where the simulated mean signal-to-noise ratio (SNR) was 51.6 dB. As expected, the appearance of the captured image was not similar to the original object; nevertheless, the image information was encoded inside the image, though it was sparsified. The reconstructed image is shown in the right column of Fig. 6(b). For image decoding, τ in Eq. (5) was adjusted to 1 × 10 −6 experimentally. The number of iterations of the algorithm was set to 10000 to ensure convergence of the cost function in optimization. As a result, we confirmed that an image of the object was successfully reconstructed. The peak SNR (PSNR) of the reconstructed image was 24.7 dB. The total processing time was 3.82 minutes when running Matlab R2017b on a computer with an Intel Xeon E5-2697 v4 CPU, an NVIDIA Geforce GTX 1080Ti, and 128 GB RAM.
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Habituation of anxiety and cortical hypervigilance during image based exposure

Habituation of anxiety and cortical hypervigilance during image based exposure

(Rankin et al., 2009). Research has suggested that this process is independent from sensitization, the increase in a response to a novel stimulus (Steiner & Barry, 2014). In previous research with non-fearful participants, habituation of repeated pleasant, neutral and unpleasant images was found within stages for early ERP components, and between stages with reemergence for a novel set of images for late components (Codispoti, Ferrari, & Bradley, 2007). This suggests generalised dishabituation and sensitization across image valence. The present study may extend from this, showing non-fear specific dishabituation of early visual attention for graded threat-images. Future research may aim to replicate and clarify the robustness of this effect across varied exposure presentations, and to distinguish it from sensitization. The mechanism of dishabituation may hold importance for understanding optimal response to exposure. For example, dishabituation generally decreases gradually with application of the dishabituating stimulus (Rankin et al., 2009).
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