Assessing the visual aspect of rotating virtual rose bushes by a labeled sorting task

Abstract

Aesthetics is one of the major parameters for consumers when buying a rose bush. Therefore, managing this quality is important for agronomists. Tools are needed to assess visual characteristics and to find links with architectural plant parameters. Sensory analyses were developed using real plants and photographs as stimuli. With technology and modeling improvements, using virtual plants could presents numerous advantages. This study demonstrated the feasibility of using rotating virtual rose bush videos as stimuli for a labeled sorting task. The virtual rose bush reflected a natural within-crop variability of one cultivar based on bud breaks location and axes length. Two panels of subjects closely linked to the horticulture sector sorted and described 40 rotating virtual rose bush videos. Non-metric Multidimensional Scaling (MDS) results for both panels were similar and allowed us to highlight five groups of virtual rose bushes with their specific sensory characteristics and their own most representative products using a combination of the paragons and the most typical products. This approach revealed that subjects detected high visual differences between products, and that by using rotation, they were able to integrate 3D properties about variations around plant facets. Finally, a labeled sorting task is a powerful method for preliminary exploration of the visual aspect of virtual plants.

No rose without a thorn: Hedonic testing of live rose plants

“…To address these issues, one study has investigated the potential of presenting 3D rotating images of rose bushes (Garbez et al, ). In that study, 3D computer‐generated models of rose bushes were evaluated by trained sensory panelists.…”

“…Acknowledging the difficulty of presenting representative photographs of plants, some researchers have attempted to present 3D representations of rose bushes by creating computerized 3D rotating virtual rose bushes without flowers (Garbez et al, ) or using videos of a rotating rose bush (Garbez et al, ). However, in both of these cases, the work was completed with sensory panelists for rose profiling rather than with consumers for hedonic tests and it is unknown if consumer liking would change with on‐screen representations rather than in‐person.…”

Sorting task as a tool to elucidate the sensory patterns of artisanal cheeses

“…Sorting is a simple procedure for collecting similarity data in which each advisor group together stimuli based on their perceived similarities (Chollet et al, ). Sorting method has shown increasing interest, both in the sensory field and in the study of consumer behavior, since it provides promising results (Abdi, Valentin, Chollet, & Chrea, ; Chollet, Lelièvre, Abdi, & Valentin, ; Dehlholm, Brockhoff, Meinert, Aaslyng, & Bredie, ; Garbez et al, ; Lê, Husson, & Lê, 2016; Nestrud & Lawless, ). Thus, Sorting is based on categorization; a natural cognitive process routinely used in everyday life, and does not require a quantitative response.…”

A comparison of generalised procrustes analysis and multiple factor analysis for projective mapping data

“…Kennedy, 2010;Lawless & Glatter, 1990;Vidal et al, 2014). There is, however, an increasing awareness Garbez et al, 2014) that one should be careful when interpreting RV values. This is because the value of the RV coefficient depends on the number of objects and variables in Z 1 and Z 2 (Smilde, Kiers, Bijlsma, Rubingh, & van Erk, 2009), and that it may be subject to a centring effect (Tomic, Forde, Delahunty, & Naes, 2013).…”