Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 14 of 14 for “"ambient illumination"”.
-
Display Technology and Ambient Illumination Influences on Visual Fatigue at VDT Workstations
… fatigue field: how visual display technology and ambient illumination affect the onset of visual fatigue. A 4x4 within-subjects design was developed and executed to study how these two independent variables affected ratings of visual fatigue, performance on the task battery, subjective image …
-
Impacts of tuning ambient illumination on sleep quality, mood, and cognitive performance in older adults
Author requested closed access (OA after 2yrs) in Vireo ETD system
-
The effects of luminance contrast, raster modulation, and ambient illumination on text readability and subjective image quality
… of luminance contrast, raster modulation, and ambient illumination on readability and image quality of text presented on a CRT display. Participants read a Tinker Speed of Reading text passage on the monitor and then responded when they found the out-of-context word in the passage. Correct …
-
Performance measures and subjective evaluations for two color displays
… preference via evaluation questionnaires. Ambient illumination measurements were obtained to determine preferred conditions for each display. A four-way factorial design was used to collect task performance data and ambient illumination preferences; performance data were collected as errors …
-
The Effect of Once Daily Use of Brimonidine tartrate 0.15% solution on the Dark-adapted Pupil Size in Dark Brown Irides
… were taken after dark adaptation (at 0.1-lux ambient illumination for 5 minutes) before administration of 1 drop of brimonidine tartrate 0.15%, and 1 and 4 hours after administration. Both pupils were measured at baseline day, administration day 7, 21, and washout day 7. RESULTS: The pupil …
-
Illumination Level as an Influence Factor on Proxemic Behavior
… proxemic zones to guide in the investigation of illumination level's influence on proxemic behavior. This study attempted to determine potential influence of the effect of bright or dim lighting conditions on the personal space requirements within the behavioral setting of waiting/reception …
-
Dynamic Visual Performance Characteristics of Elderly Drivers
… reading performance of the participants, except ambient illumination. Specifically, age has an important influence on the specific values of the design parameters. Also, these parameters interact among themselves so that one can be used to compensate for the other. These results can be used for …
-
Multiplexed photography : single-exposure capture of multiple camera settings
… Next we describe multiplexed flash illumination to recover both flash and ambient light information as well as extract depth information in a single exposure. Traditional photographic flashes illuminate the scene with a spatially-constant light beam. By adding a mask and optics to a …
-
Cardiac Signals: Remote Measurement and Applications
… has been tested on two datasets, one with static illumination condition and the other with unrestricted ambient illumination condition. Automatic skin detection is an intermediate step for rPPG. Existing methods always depend on color information to detect human skin. We have developed a novel …
-
A new catoptric system in the eyes of penaeid shrimp
… intensity of light reaching the rhabdomes. As ambient illumination decreases, dark pigment is withdrawn from the retinula cells and, in some forms, reflecting material expands around the base of the rhabdome and retinula cells. Axial light and light from nearby ommatidia passing through the …
-
Utilization and Configuration of a Multi-Spectral Image Sensor for Turfgrass Data Collection
… data collection, (b) determine effects of ambient light on image sensors for turfgrass data collection, (c) determine effects of sensor and image resolution on sensor output, and (d) advantages of image segmentation in image analysis. A multi-spectral image sensor was tested for …
-
Functional Dynamics of Primate Retinal Ganglion Cells
… annuli which were set at several levels of illumination. These experiments demonstrated that the level of ambient illumination in the surround could affect the gain and dynamics of the P cell center. The responses of P cells to chromatic and achromatic gratings were used to assess the …
-
Novel opto-electronic and plastic fibre sensors
… targets. Operation of the sensor under ambient illumination conditions is demonstrated using suitable electronic circuitry with filtering facilities. The result is a linear operational range of 60 mm with 1 % accuracy with a matt white paper target. An automated version of the sensor …
-
The Effect of Age on Dark Focus Distance and Visual Information Transfer Rate
… display with a luminance level of 20 cd/m2 and ambient illumination level of 4 lux. To assess the information transfer rate, participants were asked to read a set of characters aloud with their fastest rate for three seconds. Three measurements of information transfer rate at each viewing …