A Visual Search User Study on the Influences of Aspect Ratio Distortion of Preview Thumbnails

2012 IEEE International Conference on Multimedia and Expo Workshops Pub Date : 2012-07-09 DOI:10.1109/ICMEW.2012.101

David Ahlström, Klaus Schöffmann

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引用次数: 1

Abstract

Most image and video retrieval tools used for large-scale media collections present query results as thumbnails arranged in a grid-like display with each thumbnail preserving the aspect ratio of its corresponding source image or video. Often, the outcome of a query is a set of thumbnails with different aspect ratios, thus a varying amount of padding space is used between the thumbnails in the display. This results in a visually erratic display that conflicts with interface design rules and aesthetic principles stipulating alignment and the usage of straight visual lines to guide the human eye while scanning the display. A solution is to create equally sized thumbnails by using cropping algorithms. However, this may remove useful search information. We investigated a simple alternative: to distort thumbnails to the same aspect ratio in order to provide a calm and structured display with straight lines between thumbnails. In a user experiment we evaluated whether and how much such a horizontal distortion can be applied without hampering visual search performance. The results show that distortion does not notably influence error rate and visual search time.

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视觉搜索用户对预览缩略图宽高比失真影响的研究

大多数用于大规模媒体集合的图像和视频检索工具以缩略图的形式显示查询结果，缩略图排列在网格状显示中，每个缩略图保留其相应源图像或视频的长宽比。通常，查询的结果是一组具有不同长宽比的缩略图，因此在显示中的缩略图之间使用不同数量的填充空间。这将导致视觉上不稳定的显示，与界面设计规则和美学原则相冲突，这些原则规定了在扫描显示时使用直线来引导人眼的对齐和使用。一个解决方案是使用裁剪算法创建大小相等的缩略图。但是，这可能会删除有用的搜索信息。我们研究了一个简单的替代方案:将缩略图扭曲成相同的宽高比，以便在缩略图之间使用直线提供平静和结构化的显示。在一个用户实验中，我们评估了在不影响视觉搜索性能的情况下，是否可以应用这种水平扭曲，以及在多大程度上可以应用这种水平扭曲。结果表明，畸变对错误率和视觉搜索时间影响不显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE International Conference on Multimedia and Expo Workshops

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