filter.java

圖形操作翻转

package imageFilter;

public interface Filter {
    
    public static final int RED = 0, GREEN = 1, BLUE = 2 ;
    
    /** Return an array representing an image.
     * Images are represented as follows:
     *    <ul><li>The first dimension is horrizontal from left to right</li>
     *        <li>The second dimension is vertical from top to bottom</li>
     *        <li>The third dimension is colour in order: index 0 gives the red channel,
     *            index 1 the green and index 2 the blue</li>
     *        <li>Each colour is represented by an integer between 0 and 255 inclusive
     *            with 0 being darker and 255 being lightest</li>
     *    </ul>
     * <p><b>Precondition:</b><ul>
     *  <li> raster.length == width </li>
     *  <li> for all i. raster[i].length = height </li>
     *  <li> for all i, j. raster[i][j].length == 3 </li>
     *  <li> for all i, j, k. 0 <= raster[i][j][k] &&  raster[i][j][k] < 256 </li>
     *  <li> It can be assumed that the raster array and its items are never changed,
     *       thus pixel arrays from the input may be reused in the output.
     *  </ul>
     * </p>
     * <p><b>Postcondition:</b><ul>
     *  <li> raster is unchanged </li>
     *  <li> for all i0, i1. result[i0].length == result[i1].length </li>
     *  <li> for all i, j. result[i][j].length == 3 </li>
     *  <li> for all i, j, k. 0 <= result[i][j][k] &&  result[i][j][k] < 256 </li>
     *  </ul>
     * </p>
     * @param width The width of the input image
     * @param height The height of the input image
     * @param raster The input image
     */
    public short[][][] process( int width, int height, short[][][] raster ) ;
}