Bag-of-words image representation based on classified vector quantization

Yang, Xu; Xu, De; Qi, Yingjian

doi:10.1109/icmlc.2010.5580564

Cited by 2 publications

(1 citation statement)

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“…Recently, it has developed rapidly and become distinguished in the field of image processing such as image recognition, classification, annotation, and so on [33,34]. Its fundamental conception, bag-of-words model (BoW) [35,36], was originally used in distinguishing hidden information in a large collection of corpus [37,38] and conversing the information of the pixels to non-ordered visual words. As an unsupervised generative probabilistic model, its documents are viewed as a mixture of topics, sharing a common Dirichlet priori.…”

Section: Lda (Latent Dirichlet Allocation)mentioning

confidence: 99%

Unsupervised Greenhouse Tomato Plant Segmentation Based on Self-Adaptive Iterative Latent Dirichlet Allocation from Surveillance Camera

Cao

2019

Agronomy

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It has long been a great concern in deep learning that we lack massive data for high-precision training sets, especially in the agriculture field. Plants in images captured in greenhouses, from a distance or up close, not only have various morphological structures but also can have a busy background, leading to huge challenges in labeling and segmentation. This article proposes an unsupervised statistical algorithm SAI-LDA (self-adaptive iterative latent Dirichlet allocation) to segment greenhouse tomato images from a field surveillance camera automatically, borrowing the language model LDA. Hierarchical wavelet features with an overlapping grid word document design and a modified density-based method quick-shift are adopted, respectively, according to different kinds of images, which are classified by specific proportions between fruits, leaves, and the background. We also utilize the feature correlation between several layers of the image to make further optimization through three rounds of iteration of LDA, with updated documents to achieve finer segmentation. Experiment results show that our method can automatically label the organs of the greenhouse plant under complex circumstances, fast and precisely, overcoming the difficulty of inferior real-time image quality caused by a surveillance camera, and thus obtain large amounts of valuable training sets.

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