Technische Optik

Slevogt, Hermann

doi:10.1515/9783110842432

Cited by 25 publications

(5 citation statements)

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“…The object space will be simplified to a two-dimensional scene where light is defined as a scalar value, spreading in a straight line [23]. In this case, light from a certain point of a scene can be described as shown in Figure 2.…”

Section: Preliminary Consideration and Definitionsmentioning

confidence: 99%

Imagine All the Plants: Evaluation of a Light-Field Camera for On-Site Crop Growth Monitoring

et al. 2016

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Abstract:The desire to obtain a better understanding of ecosystems and process dynamics in nature accentuates the need for observing these processes in higher temporal and spatial resolutions. Linked to this, the measurement of changes in the external structure and phytomorphology of plants is of particular interest. In the fields of environmental research and agriculture, an inexpensive and field-applicable on-site imaging technique to derive three-dimensional information about plants and vegetation would represent a considerable improvement upon existing monitoring strategies. This is particularly true for the monitoring of plant growth dynamics, due to the often cited lack of morphological information. To this end, an innovative low-cost light-field camera, the Lytro LF (Light-Field), was evaluated in a long-term field experiment. The experiment showed that the camera is suitable for monitoring plant growth dynamics and plant traits while being immune to ambient conditions. This represents a decisive contribution for a variety of monitoring and modeling applications, as well as for the validation of remote sensing data. This strongly confirms and endorses the assumption that the light-field camera presented in this study has the potential to be a light-weight and easy to use measurement tool for on-site environmental monitoring and remote sensing purposes.

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Section: Preliminary Consideration and Definitionsmentioning

confidence: 99%

Imagine All the Plants: Evaluation of a Light-Field Camera for On-Site Crop Growth Monitoring

et al. 2016

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“…Overexpression of HDAC3 inhibited p65-mediated TNFα transcription. Furthermore, TSA augmented the M. catarrhalis, a major cause of exacerbations of COPD, induced IL-8 response and exposure to M. catarrhalis caused a decrease in global HDAC expression and activity [101]. TGFβ = transforming growth factor β Chronic obstructive pulmonary disease (COPD) is associated with an increase in neutrophil proinflammatory mediators, such as TNFα and IL-8, but with a decrease in the HDAC in alveolar macrophages [99].…”

Section: Diabetes 3 Ulcerative Colitis (Uc)mentioning

confidence: 99%

Histone Deacetylase Inhibitors: Novel Immunomodulators

Sun¹,

Reddy

2007

CEI

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Chromatin remodeling by acetylation/deacetylation of histones plays an important role in the regulation of gene expression. Acetylation of histones is regulated by two classes of enzymes: histone acetyltransferases (HATs) and histone deacetylases (HDACs). Several HDAC inhibitors, belonging to different structural classes, cause reversible inhibition of HDAC enzymes. They cause hyperacetylation of histones and have shown efficacy in experimental systems as anti-tumor agents. Phase I /II clinical trials with some of these agents have demonstrated that they are relatively well-tolerated and have anti-tumor activity in heavily pretreated patients with advanced solid and hematological tumors. The effects of HDAC inhibition are believed to be caused, in part, by accumulation of acetylated histones, although the exact mechanism of gene repression or activation is not well understood. Recent data from our and several other laboratories demonstrate that HDAC inhibitors have potent immuno-modulatory activities that have previously been largely unrecognized. Importantly, inhibition of HDAC enzymes by a far less concentration than required for anti-tumor effects is sufficient for induction of immuno-modulation by these compounds. This review addresses the issue of HDAC inhibitors and their effects on immuno-modulation on both in vitro and in vivo models of inflammation, autoimmunity and transplantation. The likely molecular and biochemical underpinnings of these novel effects will be reviewed and the potential clinical benefits will also be briefly discussed.

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“…They claim that a tele-axicon lens and a laser source can provide a 25-micron spot that is in focus over a toO-mm range at a 500-mm standoff. The detection optics should be configured to satisfy the Scheimpflug (tilted detector plane) condition [Slevogt 1974]:…”

Section: Active Triangulationmentioning

confidence: 99%

Active Optical Range Imaging Sensors

Besl¹

1989

Springer Series in Perception Engineering

131

117

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Active, optical range imaging systems collect three-dimensional coordinate data from object surfaces. These systems can be useful in a wide variety of automation applications, including shape acquisition, bin picking, assembly, inspection, gauging, robot navigation, medical diagnosis, cartography, and military tasks. The range-imaging sensors in such systems are unique imaging devices in that the image data points explicitly represent scene surface geometry in a sampled form. At least six different optical principles have been used to actively obtain range images: (1) radar, (2) triangulation, (3) moire, (4) holographic interferometry, (5) lens focusing, and (6) diffraction. The relative capabilities of different sensors and sensing methods are evaluated using a figure of merit based on range accuracy, depth of field, and image acquisition time.

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Technische Optik

Cited by 25 publications

References 0 publications

Imagine All the Plants: Evaluation of a Light-Field Camera for On-Site Crop Growth Monitoring

Imagine All the Plants: Evaluation of a Light-Field Camera for On-Site Crop Growth Monitoring

Histone Deacetylase Inhibitors: Novel Immunomodulators

Active Optical Range Imaging Sensors

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