Make haar feature scale -
this code
import java.awt.image.bufferedimage; public class haarfeature { public static void getfeature(bufferedimage image){ int width = image.getwidth(); int height = image.getheight(); //int feature_width=1*scale_width; //int feature_height=1*scale_height; int[][] ii = integralimage.convintegralimage(image); int white=0; int black=0; int feature=0; for(int i=0;i<height;i++){ for(int j=0;j<width;j++){ if(i<(height-1) && j<(width-3)){ if(i==0 && j==0){ black=ii[i][j+3]; white=ii[i+1][j+3]-ii[i][j+3]; feature=black-white; system.out.print(feature+" "); } else if(i==0){ black=ii[i][j+3]-ii[i][j-1]; white=ii[i+1][j+3]+ii[i][j-1]-ii[i][j+3]-ii[i+1][j-1]; feature=black-white; system.out.print(feature+" "); } else if(j==0){ black=ii[i][j+3]-ii[i-1][j+3]; white=ii[i+1][j+3]-ii[i][j+3]; feature=black-white; system.out.print(feature+" "); } else{ black=ii[i][j+3]+ii[i-1][j-1]-ii[i][j-1]-ii[i-1][j+3]; white=ii[i+1][j+3]+ii[i][j-1]-ii[i][j+3]-ii[i+1][j-1]; feature=black-white; system.out.print(feature+" "); } } } system.out.println(); } } } this code generate 1 rectangle features 2px x 4px. know, there many rectangle features in haar features. how code make scale in haar features? please me
i can , program in c++, check mi code generate haar feature:
int sizex = feature[i][0]; int sizey = feature[i][1]; // each position: (int x = 0; x <= framesize-sizex; x++) { (int y = 0; y <= framesize-sizey; y++) { // each size fitting within framesize: (int width = sizex; width <= framesize-x; width+=sizex) { (int height = sizey; height <= framesize-y; height+=sizey) { count++; } } } } this code gives correct number of features shown in article of lienhart, r. , maydt, j., "an extended set of haar-like features rapid object detection", icip02, pp. i: 900–903, 2002.
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