Patent ID: 7127119
Filing Date: 2006-10-24
Classification: G06F,H04B,H04N

Abstract:
1. An image processing apparatus for receiving every n data of image data which has been segmented into rectangular blocks each consisting of n×n data, and applying two-dimensional orthogonal transforms to the received data, comprising: one-dimensional orthogonal transformation means for applying one-dimensional orthogonal transforms to the n inputs, and outputting n coefficients; transposition conversion means for transposing n×n coefficients output from said one-dimensional orthogonal transformation means, and outputting every n coefficients; first selection means for selecting either a predetermined number m (0<m<n) of coefficients of the n coefficients output from said transposition conversion means, or the predetermined number m (0<m<n) of coefficients of the n coefficients output from said one-dimensional orthogonal transformation means; and second selection means for selecting either the n image data, or n data as a combination of the predetermined number m of coefficients selected by said first selection means and remaining (n−m) coefficients, which are not input to said first selection means, of the n coefficients output from said transposition conversion means, and supplying the selected data as n data to said one-dimensional orthogonal transformation means.