Michael Herf

Michael Herf
f.lux Software LLC · f.lux

About

10
Publications
4,454
Reads
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524
Citations
Citations since 2016
6 Research Items
268 Citations
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2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Introduction
Skills and Expertise

Publications

Publications (10)
Preprint
Full-text available
Wearable light sensors are increasingly used in intervention and population-based studies investigating the consequences of environmental light exposure on human physiology. An important step in such analyses is the reliable detection of non-wear time. We observed in light data that days with less wear-time also have lower variability in the light...
Article
Light exposure has a profound impact on human physiology and behaviour. For example, light exposure at the wrong time can disrupt our circadian rhythms and acutely suppress the production of melatonin. In turn, appropriately timed light exposure can support circadian photoentrainment. Beginning with the discovery that melatonin production is acutel...
Article
Light exposure has a profound impact on human physiology and behaviour. For example, light exposure at the wrong time can disrupt our circadian rhythms and acutely suppress the production of melatonin. In turn, appropriately timed light exposure can support circadian photoentrainment. Beginning with the discovery that melatonin production is acutel...
Article
Full-text available
Architectural lighting has potent biological effects but applied lighting practices that capitalize on this potential have been limited. In this review, we endeavor to consolidate and synthesize key references that will be useful for lighting professionals, with the goal of supporting knowledge translation into pragmatic lighting strategies. Specif...
Article
This paper discusses the rise of human-centric lighting and its current status in lighting. We summarise the human benefits associated with light and lighting and show that human-centric lighting has sound motivations, despite being tainted by misleading marketing claims. The phrase integrative lighting avoids the hype and encapsulates what lightin...
Article
Full-text available
For many decades, the spectral composition of lighting was determined by the type of lamp, which also influenced potential effects of outdoor lights on species and ecosystems. Light‐emitting diode (LED) lamps have dramatically increased the range of spectral profiles of light that is economically viable for outdoor lighting. Because of the array of...
Conference Paper
Full-text available
this paper we examine the difficulties in displaying a particular test image of this type. To simplify our task, we have chosen a greyscale image as our test image. We view this as a feasibility study into whether such "difficult" images can be adequately displayed on a CRT. We conclude that our test image can be displayed adequately, and the displ...
Article
Full-text available
This paper describes an algorithm for simulating soft shadows at interactive rates using graphics hardware. On current graphics workstations, the technique can calculate the soft shadows cast by moving, complex objects onto multiple planar surfaces in about a second. In a static, diffuse scene, these high quality shadows can then be displayed at 30...
Article
Soft shadows give important cues of realism to 3D scenes. Existing meth-ods can produce hard shadows in real time and soft shadows in minutes to hours per frame. Here a technique for producing accurate soft shadows quickly in software is presented, allowing soft shadow texture maps to be computed for simple scenes on commodity hardware in real time...
Article
Presented is a new algorithm to generate soft shadows. It employs graphics hardware, including texture mapping and accumulation buffering, to produce shadows resulting from area light sources quickly. Many shadow-generation algorithms have addressed the problem of quickly rendering the shadows which result from point light sources, as evidenced by...

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