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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Compress?o de Imagens Usando a Fun??o de Peano e a Transformada Wavelet 1D

Santos, Daniel Teixeira dos 06 April 2012 (has links)
Made available in DSpace on 2014-12-17T14:08:51Z (GMT). No. of bitstreams: 1 DanielTS_DISSERT.pdf: 2906320 bytes, checksum: 0844f1ce3a3b057671d92efe62faa050 (MD5) Previous issue date: 2012-04-06 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / In this work, spoke about the importance of image compression for the industry, it is known that processing and image storage is always a challenge in petrobr?s to optimize the storage time and store a maximum number of images and data. We present an interactive system for processing and storing images in the wavelet domain and an interface for digital image processing. The proposal is based on the Peano function and wavelet transform in 1D. The storage system aims to optimize the computational space, both for storage and for transmission of images. Being necessary to the application of the Peano function to linearize the images and the 1D wavelet transform to decompose it. These applications allow you to extract relevant information for the storage of an image with a lower computational cost and with a very small margin of error when comparing the images, original and processed, ie, there is little loss of quality when applying the processing system presented . The results obtained from the information extracted from the images are displayed in a graphical interface. It is through the graphical user interface that the user uses the files to view and analyze the results of the programs directly on the computer screen without the worry of dealing with the source code. The graphical user interface, programs for image processing via Peano Function and Wavelet Transform 1D, were developed in Java language, allowing a direct exchange of information between them and the user / Neste trabalho, apresenta-se a import?ncia da compress?o de imagens para a ind?stria de petr?leo, sabe-se que o processamento e armazenamento de imagens ? sempre um desafio nas grandes empresas de petr?leo, para otimizar o tempo de armazenamento e armazenar um n?mero m?ximo de imagens e dados. ? exposto algumas ferramentas para o processamento e armazenamento de imagens no dom?nio wavelet. A proposta apresentada baseia-se na Fun??o de Peano e na transformada wavelet 1D. O sistema de armazenamento tem como objetivo a otimiza??o do espa?o computacional, tanto para o armazenamento como para transmiss?o de imagens. Sendo necess?rio para isso, a aplica??o da Fun??o de Peano para linearizar as imagens com m?xima concentra??o de pontos vizinhos e a transformada wavelet 1D para decomp?-la. Estas aplica??es permitem extrair informa??es relevantes para o armazenamento de uma imagem com um menor custo computacional e com uma margem de erro muito pequena quando se compara as imagens, original e processada, ou seja, h? pouca perda de qualidade ao aplicar o sistema de processamento apresentado. Os resultados obtidos a partir das informa??es extra?das das imagens s?o apresentados numa interface gr?fica. ? atrav?s da interface gr?fica que o usu?rio visualiza as imagens e analisa os resultados do programa diretamente na tela do computador sem a preocupa??o de lidar com os c?digos fontes. A interface gr?fica, os programas de processamento de imagens via Fun??o de Peano e a TransformadaWavelet 1D foram desenvolvidos em linguagem java, possibilitando uma troca direta de informa??es entre eles e o usu?rio

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