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首页新颖的自适应图像检索重排方法
本文探讨了一种新颖且适应性强的图像搜索再排序方法,针对日益增长的互联网上用户自定义标签的图片,解决用户在提交查询时如何有效获取真正相关图像的问题。首先,该研究通过对图像分类的结果,对不同的视觉特征进行评估,区分对象和场景的类别。具体来说,论文作者利用预先训练的文本特征分类器将查询分为对象或场景类,这样可以针对性地选择低级视觉特征进行再排序。 传统图像搜索通常依赖于关键词匹配,但这种方法往往无法完全捕捉到图片的深层语义和上下文信息。因此,作者提出了一种适应性策略,即根据查询的特性动态地选择和融合视觉特征。这种方法允许系统在处理不同类型的查询时,如对象识别、场景搜索等,灵活地调整其检索策略,提高了搜索结果的相关性和准确性。 实验部分,研究人员在大规模的网络查询图像数据集上进行了深入的验证,通过对比实验展示了新方法相较于传统方法在搜索效率和精度上的显著提升。结果显示,该方法在有效地提高了图像搜索的质量的同时,也具有良好的鲁棒性和扩展性,能够适应各种复杂和多变的搜索场景。 关键词:图像搜索再排序、适应性特征选择与融合、对象识别与场景分析。这种创新的方法不仅优化了用户的搜索体验,也为图像检索领域的研究者提供了新的视角和实用工具,推动了图像搜索引擎的发展,对于提升现代信息技术服务的人机交互体验具有重要意义。
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A Novel and Adaptive Method for Image Search
Reranking
Hong Lu
, Guobao Jiang, Zhuohong Cai, and Xiangyang Xue
Shanghai Key Lab of Intelligent Information Processing
School of Computer Science
Fudan University, Shanghai, China
honglu@fudan.edu.cn
Abstract. In this paper, we propose a novel and adaptive method for
image search reranking. We firstly evaluate different visual features based
on the results of image classification on object and scene separately. And
visual features are chosen adaptively to rerank the initial image search
result. For a given query, it can be classified into either object or scene us-
ing the trained classifier on text features. Then, low-level visual features
are adaptively selected and fused for image search reranking. Experimen-
tal results on large scale image dataset of WebQueries demonstrate the
efficacy of the proposed method.
Keywords: Image search reranking, adaptive feature selection and fu-
sion, object and scene.
1 Introduction
As more and more images with user free tags are appearing on the Internet, it
is necessary to help a user to effectively obtain the real relevant images when
the user submit a query. Most image search engines normally return images for
one query based on associated texts. And, the search results may contains some
unrelated images. So, many image reranking methods based on visual features
occur in recent years, which aims to improve the image search result [1].
There are some different characteristics between object and scene on obser-
vation. For object, Alexe et al. [2] argue that any object has at least one of
three distinctive characteristics: (a) a well-defined closed boundary in space; (b)
a different appearance from their surroundings; (c) sometimes it is unique within
the image and stands out as salient. And in [3,4], some image properties such
as openness, expansion, ruggedness, verticalness, which is to describe scene con-
tent, are computed and used. It can be found that object and scene perception
has different processes, different features or different feature fusion. So, in this
paper, we choose different features to rerank the initial search result for object
and scene.
Before use low-level visual features for reranking, we evaluate the performance
of different visual features. In this paper, the features we considered include
Corresponding author.
W. Zhang et al. (Eds.): IFTC 2012, CCIS 331, pp. 212–218, 2012.
c
Springer-Verlag Berlin Heidelberg 2012
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