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pmid: 24956369
Person description is a challenging problem in computer vision. We investigated two major aspects of person description: 1) gender and 2) action recognition in still images. Most state-of-the-art approaches for gender and action recognition rely on the description of a single body part, such as face or full-body. However, relying on a single body part is suboptimal due to significant variations in scale, viewpoint, and pose in real-world images. This paper proposes a semantic pyramid approach for pose normalization. Our approach is fully automatic and based on combining information from full-body, upper-body, and face regions for gender and action recognition in still images. The proposed approach does not require any annotations for upper-body and face of a person. Instead, we rely on pretrained state-of-the-art upper-body and face detectors to automatically extract semantic information of a person. Given multiple bounding boxes from each body part detector, we then propose a simple method to select the best candidate bounding box, which is used for feature extraction. Finally, the extracted features from the full-body, upper-body, and face regions are combined into a single representation for classification. To validate the proposed approach for gender recognition, experiments are performed on three large data sets namely: 1) human attribute; 2) head-shoulder; and 3) proxemics. For action recognition, we perform experiments on four data sets most used for benchmarking action recognition in still images: 1) Sports; 2) Willow; 3) PASCAL VOC 2010; and 4) Stanford-40. Our experiments clearly demonstrate that the proposed approach, despite its simplicity, outperforms state-of-the-art methods for gender and action recognition.
Male, Sex Determination Analysis, Biometry, Electrical Engineering, Electronic Engineering, Information Engineering, Sensitivity and Specificity, Pattern Recognition, Automated, Artificial Intelligence, Image Interpretation, Computer-Assisted, Humans, Whole Body Imaging, Elektroteknik och elektronik, ta113, Reproducibility of Results, Image Enhancement, Actigraphy, Semantics, Gender recognition; action recognition; pyramid representation; bag-of-words, Female, Algorithms
Male, Sex Determination Analysis, Biometry, Electrical Engineering, Electronic Engineering, Information Engineering, Sensitivity and Specificity, Pattern Recognition, Automated, Artificial Intelligence, Image Interpretation, Computer-Assisted, Humans, Whole Body Imaging, Elektroteknik och elektronik, ta113, Reproducibility of Results, Image Enhancement, Actigraphy, Semantics, Gender recognition; action recognition; pyramid representation; bag-of-words, Female, Algorithms
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 62 | |
popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Top 10% | |
influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Top 10% |