The visual preferences for forest regeneration and field afforestation : four case studies in Finland

The overall aim of this dissertation was to study the public's preferences for forest regeneration fellings and field afforestations, as well as to find out the relations of these preferences to landscape management instructions, to ecological healthiness, and to the contemporary theories for predicting landscape preferences. This dissertation includes four case studies in Finland, each based on the visualization of management options and surveys. Guidelines for improving the visual quality of forest regeneration and field afforestation are given based on the case studies. The results show that forest regeneration can be connected to positive images and memories when the regeneration area is small and some time has passed since the felling. Preferences may not depend only on the management alternative itself but also on the viewing distance, viewing point, and the scene in which the management options are implemented. The current Finnish forest landscape management guidelines as well as the ecological healthiness of the studied options are to a large extent compatible with the public's preferences. However, there are some discrepancies. For example, the landscape management instructions as well as ecological hypotheses suggest that the retention trees need to be left in groups, whereas people usually prefer individually located retention trees to those trees in groups. Information and psycho-evolutionary theories provide some possible explanations for people's preferences for forest regeneration and field afforestation, but the results cannot be consistently explained by these theories. The preferences of the different stakeholder groups were very similar. However, the preference ratings of the groups that make their living from forest - forest owners and forest professionals - slightly differed from those of the others. These results provide support for the assumptions that preferences are largely consistent at least within one nation, but that knowledge and a reference group may also influence preferences.Väitöskirjassa tutkittiin ihmisten maisemapreferenssejä (maisemallisia arvostuksia) metsänuudistamishakkuiden ja pellonmetsitysten suhteen sekä analysoitiin näiden preferenssien yhteyksiä maisemanhoito-ohjeisiin, vaihtoehtojen ekologiseen terveyteen ja preferenssejä ennustaviin teorioihin. Väitöskirja sisältää neljä tapaustutkimusta, jotka perustuvat hoitovaihtoehtojen visualisointiin ja kyselytutkimuksiin. Tapaustutkimusten pohjalta annetaan ohjeita siitä, kuinka uudistushakkuiden ja pellonmetsitysten visuaalista laatua voidaan parantaa. Väitöskirjan tulokset osoittavat, että uudistamishakkuut voivat herättää myös myönteisiä mielikuvia ja muistoja, jos uudistusala on pieni ja hakkuun välittömät jäljet ovat jo peittyneet. Preferensseihin vaikuttaa hoitovaihtoehdon lisäksi mm. katseluetäisyys, katselupiste ja ympäristö, jossa vaihtoehto on toteutettu. Eri viiteryhmien (metsäammattilaiset, pääkaupunkiseudun asukkaat, ympäristönsuojelijat, tutkimusalueiden matkailijat, paikalliset asukkaat sekä metsänomistajat) maisemapreferenssit olivat hyvin samankaltaisia. Kuitenkin ne ryhmät, jotka saavat ainakin osan elannostaan metsästä - metsänomistajat ja metsäammattilaiset - pitivät metsänhakkuita esittävistä kuvista hieman enemmän kuin muut ryhmät. Nämä tulokset tukevat oletusta, että maisemapreferenssit ovat laajalti yhteneväisiä ainakin yhden kansan tai kulttuurin keskuudessa, vaikka myös viiteryhmä saattaa vaikuttaa preferensseihin jonkin verran. Nykyiset metsämaisemanhoito-ohjeet ovat pitkälti samankaltaisia tässä väitöskirjassa havaittujen maisemapreferenssien kanssa. Myöskään tutkittujen vaihtoehtoisten hoitotapojen ekologisen paremmuuden ja niihin kohdistuvien maisemallisten arvostusten välillä ei ollut suurta ristiriitaa. Kuitenkin joitakin eroavaisuuksia oli; esimerkiksi sekä maisemanhoito-ohjeiden että ekologisten hypoteesien mukaan säästöpuut tulisi jättää ryhmiin, kun taas ihmiset pitivät eniten yksittäin jätetyistä puista. Informaatiomalli ja psyko-evolutionaarinen teoria tarjoavat mahdollisia selityksiä uudistushakkuisiin ja pellonmetsitykseen kohdistuville preferensseille, vaikkakaan tutkimuksen tuloksia ei voida täysin selittää näillä teorioilla

No-reference Image Denoising Quality Assessment

A wide variety of image denoising methods are available now. However, the performance of a denoising algorithm often depends on individual input noisy images as well as its parameter setting. In this paper, we present a no-reference image denoising quality assessment method that can be used to select for an input noisy image the right denoising algorithm with the optimal parameter setting. This is a challenging task as no ground truth is available. This paper presents a data-driven approach to learn to predict image denoising quality. Our method is based on the observation that while individual existing quality metrics and denoising models alone cannot robustly rank denoising results, they often complement each other. We accordingly design denoising quality features based on these existing metrics and models and then use Random Forests Regression to aggregate them into a more powerful unified metric. Our experiments on images with various types and levels of noise show that our no-reference denoising quality assessment method significantly outperforms the state-of-the-art quality metrics. This paper also provides a method that leverages our quality assessment method to automatically tune the parameter settings of a denoising algorithm for an input noisy image to produce an optimal denoising result.Comment: 17 pages, 41 figures, accepted by Computer Vision Conference (CVC) 201

Taste and the algorithm

Today, a consistent part of our everyday interaction with art and aesthetic artefacts occurs through digital media, and our preferences and choices are systematically tracked and analyzed by algorithms in ways that are far from transparent. Our consumption is constantly documented, and then, we are fed back through tailored information. We are therefore witnessing the emergence of a complex interrelation between our aesthetic choices, their digital elaboration, and also the production of content and the dynamics of creative processes. All are involved in a process of mutual influences, and are partially determined by the invisible guiding hand of algorithms. With regard to this topic, this paper will introduce some key issues concerning the role of algorithms in aesthetic domains, such as taste detection and formation, cultural consumption and production, and showing how aesthetics can contribute to the ongoing debate about the impact of today’s “algorithmic culture”

Haunting Images: Differential Perception and Emotional Response to the Archetypes of News Photography: A Study of Visual Reception Factored by Gender and Expertise

This dissertation explores how and why certain news photographs become memorable. Although researchers believe news photos count as forms of media expression, no one knows how influential these images really are in shaping societal attitudes. Social constructionist critics have argued that iconic images are pervasive markers of American collective memory. While icons have become the subject of intense media study, critics have ignored the presence of image archetypes that fall outside of the boundaries of the American iconic canon. They have also followed a top-down procedure of interpretation rather than a bottom-up method of collecting data from actual subjects. As I define it, the news image archetype is an authentically captured image of a human predicament of the greatest magnitude and seriousness showing conflict, tragedy, and occasionally, triumph. Visually these images communicate through physical gestures and facial expressions either directly, when faces are visible, or by implication in panoramic shots. Archetypal images can be iconic but need not be. Whereas icons are presumed to appeal to "everybody" by modeling ideology and "civic performance," archetypes need not exhibit any particular ideology. The common thread is more universally human than political. For this reason their appeal tends to be trans-cultural. This mixed-method study tests audience response to 41 outstanding news photographs including iconic, archetypal and ordinary examples. The purpose is to ascertain whether archetypal images can be distinguished and recalled as outstanding exemplars outside the iconic category; whether image quality preferences vary by visual expertise and gender; and how study subjects "read" the archetype. Using 2X2 ANOVA design, I studied four independent groups: male/female, visual expert/visual non-expert; n = 113. Study data indicate a convergence of ranking preference for some non-iconic archetypes that were rated as highly as famous icons. However, the strongest results show a convergence as to which image qualities (e.g., aesthetics, newsworthiness, emotional arousal etc.) were most important to viewers. The study found statistically significant differences of judgment on image qualities factored by gender and expertise. Qualitative results provided rich insights on factors affecting viewer response while composite data suggest multiple lines of future research

Aesthetic Qualities of Websites and their Effects on Public Perceptions of Agricultural Issues and Organizations

This study sought to evaluate perceptions of agricultural issues and organizations based on how information is presented visually in websites. Researchers intended the results to be used to help the agricultural industry more effectively communicate information through better website design and increased persuasiveness. The study was conducted through the use of three focus group sessions as mapped out by Krueger (1998a, 1998b, 1998c) and Morgan (1998a, 1998b). The study used non-agriculture students purposively selected from a class in the University of Arkansas School of Human Environmental Sciences as participants in the study. The subject demographics closely resembled the primary demographics of grocery store consumers (Carpenter & Moore, 2006). Four websites containing information on pink slime, or lean finely textured beef, were selected for the focus groups to review. The websites were selected based on a rubric created by the researchers and an expert panel, which incorporated selection criteria based on the Elaboration Likelihood Model (Petty and Caciappo, 1981) and on design characteristics identified by Williams and Tollett (2007) and Robins et al. (2010). Characteristics considered in the selection of the websites were positive or negative textual content, images/video, organization, typography, and colors. The researchers selected two websites with positive information on the topic, one with low aesthetic quality and one with high aesthetic quality. The other two websites selected contained negative information on the topic with one having low aesthetic quality and one having a high aesthetic quality. The focus group discussions followed a questioning route to increase consistency (Krueger, 1998c). The study\u27s first objective was to identify how webpage visitors\u27 perceptions of agricultural issues and sources are affected by visual design. The second objective was to identify the specific peripheral cues in organizations\u27 websites that were most important in the visitors\u27 formulation of opinions related to agricultural issues or organizations. Recurring themes were identified from the focus group sessions by examining flip-chart notes and audio recordings from the meetings. Users\u27 perceptions of credibility were acutely affected by visual design. In websites with low aesthetic quality, participants thought the credibility of the site was very low, but for websites with high aesthetic quality, users\u27 perceptions of credibility were much more positive, regardless of the content. Specific examples in ten categories of design characteristics were identified as important peripheral cues that could affect users\u27 ability to be persuaded by the website, especially in situations where users were least likely to read and work to understand the meaning of the content. These conclusions led to very specific recommendations for practitioners as well as researchers regarding the design of websites presenting information about agricultural issues. For example, website designers working for agricultural organizations should work to develop cleaner, more modern designs to improve perceptions of credibility, therefore improving the likelihood that visitors will be persuaded through peripheral cues

The influence of preconceptions on perceived sound reduction by environmental noise barriers

The paper presents research that answers three main questions: (1) Do preconceptions held about the constituent materials of an environmental noise barrier affect how people perceive the barrier will perform at attenuating noise? (2) Does aesthetic preference influence the perception of how a barrier will perform? (3) Are barriers, which are deemed more aesthetically pleasing, more likely to be perceived as better noise attenuators? In a virtual reality setting with film to improve the contextual realism of the intersensory interaction test, participants were required to compare the perceived effectiveness of five standard 'in-situ' noise barriers, including concrete, timber, metal, transparent acrylic and a vegetative screen. The audio stimulus was held at a constant sound pressure level (SPL), whilst the visual stimulus changed, as the influential factor. As the noise levels projected during the study were held constant, it was possible to attribute the participants' perception of noise attenuation by the barriers, to preconceptions of how the varying barrier material would attenuate noise. There was also an inverse correlation between aesthetics and perception of how a noise barrier would perform. The transparent and deciduous vegetation barriers, judged most aesthetically pleasing, were judged as the least effective at attenuating noise. (c) 2010 Elsevier B.V. All rights reserved

Flora and Fauna in East Asian Art

Flora and Fauna in East Asian Art is the fourth annual exhibition curated by students enrolled in the Art History Methods course. This exhibition highlights the academic achievements of six student curators: Samantha Frisoli ’18, Daniella Snyder ’18, Gabriella Bucci ’19, Melissa Casale ’19, Keira Koch ’19, and Paige Deschapelles ’20. The selection of artworks in this exhibition considers how East Asian artists portrayed similar subjects of flora and fauna in different media including painting, prints, embroidery, jade, and porcelain. This exhibition intends to reveal the hidden meanings behind various representations of flora and fauna in East Asian art by examining the iconography, cultural context, aesthetic and function of each object.https://cupola.gettysburg.edu/artcatalogs/1025/thumbnail.jp