| 摘要 |
<p>PURPOSE:To easily expand a multidimensional picture by using a one-dimensional function for finding out a feature point in the vicinity in the case that the luminance information of a picture element other than the feature point is determined. CONSTITUTION:In an array converter 17, the information of the feature point supplied to a luminance function regenerating device 8 from a reception circuit in a state that is detected in detecting order depending on the scanning order of a picture scanning line is made to one-dimensional re-arrangement so that the state of array in which two-dimensional neighboring feature points are adjacent to each other is attained by adopting the technique of Peanoscan, etc. In this case, the local maximum point of picture information, the local minimum point of the picture information and the quick change point of the picture information are defined as the feature points of the picture, and at the time of the expansion of the multidimensional compressed picture obtained by compression by using the position of both the feature point and the picture information, in the case that the luminance information of the picture element other than the feature point is determined by an interpolation surface to be determined by plural feature points in the vicinity, the one-dimensional function is used sometime for finding out the feature point in the vicinity, and an expanded surface or an expanded solid is used sometime for finding out the feature point in the vicinity.</p> |
