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Sensoriamento compressivo para sinais de música não estacionários e sinais de imagem
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ISBN10: 6209129854
ISBN13: 9786209129858
Publisher: Edicoes Nosso Conhecimento
Published: Oct 17 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209129858
Publisher: Edicoes Nosso Conhecimento
Published: Oct 17 2025
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Portuguese
A deteção compressiva (CS) é a principal solução ou método para reconstruir o sinal com um número muito reduzido de medições, em comparação com os métodos convencionais. De acordo com os métodos convencionais ou, por outras palavras, com a teoria da amostragem de Shannon-Nyquist, é necessário o dobro da largura de banda do sinal para o reconstruir corretamente. O problema básico é armazenar uma grande quantidade de dados com o método convencional. Para o conseguir, é necessária a matriz de medida, que deve ser uma matriz de medida estável, e a matriz de base. A matriz de medida e a matriz de base devem satisfazer duas propriedades que são RIP e iid. A matriz de medição, que é geralmente uma matriz aleatória, é optimizada para obter uma coerência mútua menor. Existem vários algoritmos de reconstrução que são utilizados para a reconstrução correta do sinal após as compressões.
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