Publications by Siobhan Francois Rockcastle

The Impact of Light Distribution and Furniture Layout on Meeting Light Exposure Objectives in an Office – A Simulation Case Study

Marilyne Andersen, Siobhan Francois Rockcastle, Megan Nicole Danell, Steffen Lutz Hartmeyer

The present simulation case study compares the impact of electric lighting distributions in relation to work-desk location and orientation on work-plane and eye-level illumination within a small private office. The aim of this study is to better understand ...

2021

The Case for Occupant-Centric Daylight Analytics: a Comparison of Horizontal Illumination and Immersive View

Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

Daylight is valued as an energy efficient alternative to electric light and over the past few decades, climate-based horizontal illuminance metrics have demonstrated the importance of variable sky conditions on annual predictions. These metrics allow us to ...

INT BUILDING PERFORMANCE SIMULATION ASSOC-IBPSA2019

OCUVIS: A Web-Based Visualizer for Simulated Daylight Performance

Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

This paper introduces an interactive web-based visualizer for multi-metric daylight simulation results, named OCUVIS. It is able to display simulation-based results for a diverse range of ocular human-centric metrics such as non-visual health potential (nv ...

2018

A Simulation-Based Workflow to Assess Human-Centric Daylight Performance

Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

This paper will present an annual simulation-based workflow for assessing human perceptual and non-visual responses to daylight across a series of view positions in an architectural case study. Through the integration of mathematical models used to predict ...

2017

Contrast measures for predicting perceptual effects of daylight in architectural renderings

Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

Daylit architecture is perceived as a dynamic luminous composition, yet most existing performance metrics were designed to evaluate natural illumination for its ability to adequately illuminate a two-dimensional task surface and avoid glare-based discomfor ...

SAGE Publications2017

An Experiment in Virtual Reality to Measure Daylight-Driven Interest in Rendered Architectural Scenes

Marilyne Andersen, Siobhan Francois Rockcastle, Kynthia Chamilothori

This paper introduces an experiment using a virtual reality headset to collect subjective evaluations of rendered daylit architectural scenes. By varying sky conditions and view directions from a fixed position in architectural renderings, the authors coll ...

2017

Perceptual Dynamics of Daylight in Architecture

Siobhan Francois Rockcastle

In our experience of daylit architecture, our visual perception is greatly impacted by the ephemeral and inherently dynamic conditions of the surrounding environment. Driven by changes in sky type, time-of-day, and time-of-year, these variable conditions c ...

EPFL2017

A human-centric approach to assess daylight in buildings for non-visual health potential, visual interest and gaze behavior

Marilyne Andersen, Mandana Sarey Khanie, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

This paper introduces a novel approach for the assessment of daylight performance in buildings, venturing beyond existing methods that evaluate 2-dimensional illumination and comfort within a fixed field-of-view in order to predict human responses to light ...

Elsevier2017

Towards a novel prediction model for visual interest in daylit renderings

Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

In spaces where daylight is a primary source of illumination, our visual perception of architecture is largely influenced by the ephemeral composition of sunlight and shadow. To evaluate these perceptual effects, the authors will apply quantitative contras ...

ACM Digital Library2016

Human perceptions of daylight composition in architecture: a preliminary study to compare quantitative contrast measures with subjective user assessments in HDR renderings

Marilyne Andersen, Siobhan Francois Rockcastle

Humans perceive daylight as a rich and dynamic luminous composition and yet existing performance metrics most often evaluate natural illumination for its ability to adequately illuminate a two-dimensional task surface while avoiding glare-based visual disc ...

2015

Measuring the Dynamics of Contrast & Daylight Variability in Architecture: A Proof of Concept Methodology

Marilyne Andersen, Siobhan Francois Rockcastle

Unlike artificial light sources, which can be calibrated to meet a desired luminous effect regardless of latitude, climate, or time of day, daylight is a dynamic light source, which produces variable shadow patterns and fluctuating levels of brightness. Wh ...

Elsevier2014

Beyond illumination: An interactive simulation framework for non-visual and perceptual aspects of daylighting performance

Antoine Guillemin, Marilyne Andersen, Siobhan Francois Rockcastle, María Lovísa Ámundadóttir

This paper presents a proof-of-concept for a goal-based simulation structure that could offer design support for daylighting performance aspects beyond conventional ones such as illumination, glare or solar gains. The framework uses a previously establishe ...

2013

Dynamic Annual Metrics for Contrast in Daylit Architecture

Marilyne Andersen, Siobhan Francois Rockcastle

Daylight is a dynamic source of illumination in architectural space, creating diverse and ephemeral configurations of light and shadow within the built environment. It can generate contrasting levels of brightness between distinct geometries or it can high ...

2012