López-Granado, Otoniel Mario; Martínez-Rach, Miguel Onofre; Martí-Campoy, Antonio; Cruz-Chávez, Marco Antonio; Pérez Malumbres, Manuel(MDPI AG, 2020-11)
[EN] Traditionally, it has been assumed that the compression of the sign of wavelet coefficients is not worth the effort because they form a zero-mean process. However, several image encoders such as JPEG 2000 include ...
Discrete Wavelet Transform has been widely used in image compression because it is able to compact frequency and spatial localization of image energy into a small fraction of coefficients. In recent years coefficient sign ...
López-Granado, O; Galiano, V; Martí Campoy, Antonio; Migallón, H.; Martinez Rach, Miguel Onofre; Piñol, Pablo; Perez Malumbres, Manuel Jose(Witpress, 2013)
Discrete Wavelet Transform has proved to be powerful for image compression
because it is able to compact frequency and spatial localization of image energy
into a small fraction of coefficients. For a long time it was ...