// Сглаживание контуров, исключение артефактов.
int smoothContour(frGeomStrip* src){
if ( src->edgeA.size() != src->edgeB.size() ){
return 0;
}
// сгладить
applySmooth(src);
// отрезать ролики
if( vertical )
applyDisRoller(src);
// перестроить центральную линию
calculateCenter(src);
return 0;
}
int main(int argc, char *argv[])
{
int numtasks, rank, rc, dest, source, count, tag=1;
int number_of_processes;
char inmsg[10], outmsg[10];
// original image
IplImage* img = 0;
uchar *img_local_data = 0;
if(argc<2) {
printf("Usage: main <image-file-name>\n\7");
exit(0);
}
// load an image
// Initialize MPI and get important variable.
MPI_Status Stat;
MPI_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &number_of_processes);
img=cvLoadImage(argv[1], CV_LOAD_IMAGE_COLOR);
if(!img) {
printf("Could not load image file: %s\n",argv[1]);
exit(0);
}
// Image size
int imageSize = img->height*img->widthStep;
// Calculates the amount of work of each process
int workload = img->height / number_of_processes;
int rec_size = workload * img->widthStep;
if(rank == 0) {
// Array that contains the final imageData
char *result = malloc(rec_size);
char *extra = 0;
int total_work = workload * number_of_processes;
// The first process always calculates the first part of the matrix
applySmooth(img, result, 0, workload);
if (total_work < img->height)
{
extra = malloc((img->height - total_work) * img->widthStep);
applySmooth(img, extra, total_work, img->height);
memcpy(img->imageData + rec_size * number_of_processes, extra, (img->height - total_work) * img->widthStep);
}
// Collect all the processed data
MPI_Gather(result, rec_size, MPI_CHAR, img->imageData, rec_size, MPI_CHAR, 0, MPI_COMM_WORLD);
cvSaveImage("result/result.jpg", img, 0);
cvReleaseImage(&img);
}
else {
// Each process knows where to start
int start = rank*workload;
char * result = malloc(rec_size);
applySmooth(img, result, start, start+workload);
// The offset is important to avoid any problems while building the
// image
MPI_Gather(result, rec_size, MPI_CHAR, NULL , rec_size, MPI_CHAR, 0, MPI_COMM_WORLD);
}
MPI_Finalize();
return 0;
}
