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Two-Tier genetic programming: towards raw pixel-based image classification
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DOI：10.1016/j.eswa.2012.02.123.png)
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Classifying images is of great importance in machine vision and image analysis applications such as object recognition and face detection. Conventional methods build classifiers based on certain types of image features instead of raw pixels because the dimensionality of raw inputs is often too large. Determining an optimal set of features for a particular task is usually the focus of conventional image classification methods. In this study we propose a Genetic Programming (GP) method by which raw images can be directly fed as the classification inputs. It is named as Two-Tier GP as every classifier evolved by it has two tiers, the other for computing features based on raw pixel input, one for making decisions. Relevant features are expected to be self-constructed by GP along the evolutionary process. This method is compared with feature based image classification by GP and another GP method which also aims to automatically extract image features. Four different classification tasks are used in the comparison, and the results show that the highest accuracies are achieved by Two-Tier GP. Further analysis on the evolved solutions reveals that there are genuine features formulated by the evolved solutions which can classify target images accurately. (C) 2012 Elsevier Ltd. All rights reserved.
Keyword:
Evolutionary computation
Genetic programming
Feature extraction
Feature selection
Image classification
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7.5
论文数:
2.9W
被引数:
10.2W
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Evolutionary-computer-assisted design of image operators that detect interest points using genetic programming使用遗传编程检测兴趣点的图像算子的进化计算机辅助设计
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