نتایج جستجو برای: discriminative sparse representation

تعداد نتایج: 300543  

Journal: :journal of advances in computer research 2016
atefe aghaei sajjad tavassoli

human action recognition is an important problem in computer vision. one of the methods that are recently used is sparse coding. conventional sparse coding algorithms learn dictionaries and codes in an unsupervised manner and neglect class information that is available in the training set. but in this paper for solving this problem, we use a discriminative sparse code based on multi-manifolds. ...

Journal: :Multimedia Tools and Applications 2015

2006
Ke Huang Selin Aviyente

In this paper, application of sparse representation (factorization) of signals over an overcomplete basis (dictionary) for signal classification is discussed. Searching for the sparse representation of a signal over an overcomplete dictionary is achieved by optimizing an objective function that includes two terms: one that measures the signal reconstruction error and another that measures the s...

Journal: :IEEE Transactions on Neural Networks and Learning Systems 2020

Journal: :CoRR 2011
Bernard Ghanem Narendra Ahuja

In this paper, we address the problem of discriminative dictionary learning (DDL), where sparse linear representation and classification are combined in a probabilistic framework. As such, a single discriminative dictionary and linear binary classifiers are learned jointly. By encoding sparse representation and discriminative classification models in a MAP setting, we propose a general optimiza...

Car license plate detection has been always a challenging task in the context of traffic control and traffic offenses. In this paper, the problem of license plate detection from gray scale images taken in natural conditions is addressed. Our car plate database consists of images with severe imaging conditions such as low quality images, far distanced cameras, and severe weather conditions. The ...

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