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iDISF_demo.c
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iDISF_demo.c
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/**
* Interactive Segmentation based on Dynamic and Iterative Spanning Forest (C)
*
* @date August, 2021
*/
//=============================================================================
// Includes
//=============================================================================
#include "Image.h"
#include "iDISF.h"
#include "Utils.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
//=============================================================================
// Prototypes
//=============================================================================
void usage(char *argv);
Image *loadImage(const char *filepath);
void writeImagePGM(Image *img, char *filepath);
void writeImagePPM(Image *img, char *filepath);
Image *overlayBorders(Image *img, Image *border_img);
void usage_iDISF_scribbles_rem(char *argv)
{
printf("\n Usage : %s --rem 1 [options]\n", argv); // 5 args
printf("\n Options : \n");
printf(" --i : Input image\n");
printf(" --n0 : Number of init GRID seeds (>= 0)\n");
printf(" --it : Iterations \n");
printf(" --f : Path-cost function. { 1:color distance, 2:gradient-cost, 3:beta norm, 4:cv tree norm, 5:sum gradient-cost, 6: sum beta norm }\n");
printf("\n Optional : \n");
printf(" --xseeds : Object seed x coord (for a single seed)\n");
printf(" --yseeds : Object seed y coord (for a single seed)\n");
printf(" --file <scribbles.txt>: File name with the pixel coordinates of the scribbles\n");
printf(" WARNING: Use --xseeds --yseeds OR --file\n");
printf(" --inverse : Inverse the pixel coordinates of the scribbles. Can use any char with this flag to activate it. \n");
printf(" --c1 : Used in path-cost functions 2-5. Interval: [0.1,1.0] \n");
printf(" --c2 : Used in path-cost functions 2-5. Interval: [0.1,1.0] \n");
printf(" --max_markers : Define the number of scribbles that will be used. (Default: The number of scribbles equal to the scribbles file)\n");
printf(" --obj_markers : Define the number of scribbles that will be labeled as object. (Default: all scribbles are labeled as object)\n");
printf(" --o <path/image>: Define the output image name and its path.\n");
printf("\n Seeds file format : \n");
printf(" number of scribbles\\n \n");
printf(" number of pixels in the scribble\\n \n");
printf(" x_coord;y_coord\\n \n");
printf(" obs: the last coord don't have \"\\n\" \n");
}
void usage_iDISF(char *argv)
{
printf("\n Usage : %s --rem 3 [options]\n", argv); // 5 args
printf("\n Options : \n");
printf(" --i : Input image\n");
printf(" --n0 : Number of init GRID seeds (>= 0)\n");
printf(" --nf : Number of final superpixels\n");
printf(" --f : Path-cost function. {1:color distance, 2:gradient-cost, 3:beta norm, 4:cv tree norm, 5:sum gradient-cost, 6: sum beta norm}\n");
printf("\n Optional : \n");
printf(" --xseeds : Object seed x coord\n");
printf(" --yseeds : Object seed y coord\n");
printf(" --file <scribbles.txt>: File name with the pixel coordinates of the scribbles\n");
printf(" WARNING: Use --xseeds --yseeds OR --file\n");
printf(" --inverse : Inverse the pixel coordinates of the scribbles. Can use any char with this flag to activate it. \n");
printf(" --c1 : Used in path-cost functions 2-5. Interval: [0.1,1.0] \n");
printf(" --c2 : Used in path-cost functions 2-5. Interval: [0.1,1.0] \n");
printf(" --max_markers : Define the number of scribbles that will be used. (Default: The number of scribbles in scribbles file)\n");
printf(" --obj_markers : Define the number of scribbles that will be labeled as object. (Default: all scribbles are labeled as object)\n");
printf(" --o <path/image>: Define the image name and its path.\n");
printf("\n Seeds file format : \n");
printf(" number of scribbles\\n \n");
printf(" number of pixels in the scribble\\n \n");
printf(" x_coord;y_coord\\n \n");
printf(" obs: the last coord don't have \"\\n\" \n");
}
/**
* Reads the coordinates of the marked pixels in a text file
* @param fileMarkers in : char[255] -- a file name
* @param max_markers in : int -- the maximum number of markers
* @param marker_sizes out : &int[num_user_seeds] -- the size of each marker
* @param coords_markers out : &NodeCoords[num_user_seeds][marker_sizes]
* @param inverse in : 0 or 1 -- indicates if the coordinates are inverted
* @return : number of markers
*/
int readMarkersFile(char fileMarkers[],
int max_markers,
int **marker_sizes_out,
NodeCoords ***coords_markers_out,
int inverse)
{
int num_user_seeds = 0;
NodeCoords **coords_markers;
int *marker_sizes;
FILE *file = fopen(fileMarkers, "r");
if (file == NULL)
printError("readFile", ("Was do not possible to read the seeds file"));
if (fscanf(file, "%d\n", &num_user_seeds) < 1)
printError("readFile", "Invalid file format");
marker_sizes = (int *)allocMem(num_user_seeds, sizeof(int));
coords_markers = (NodeCoords **)allocMem(num_user_seeds, sizeof(NodeCoords *));
if (max_markers < 1)
max_markers = num_user_seeds;
for (int i = 0; i < MIN(num_user_seeds, max_markers); i++)
{
if (fscanf(file, "%d\n", &(marker_sizes[i])) < 1)
printError("readFile", "Invalid file format");
coords_markers[i] = (NodeCoords *)allocMem(marker_sizes[i], sizeof(NodeCoords));
for (int j = 0; j < marker_sizes[i]; j++)
{
if (!(i == num_user_seeds - 1 && j == marker_sizes[i] - 1))
{
if (inverse == 0)
{
if (fscanf(file, "%d;%d\n", &coords_markers[i][j].x, &coords_markers[i][j].y) != 2 ||
coords_markers[i][j].x < 0 || coords_markers[i][j].y < 0)
{
printf("coordsx=%d, coordsy=%d \n", coords_markers[i][j].x, coords_markers[i][j].y);
printError("readFile", "Invalid coords values in file");
}
}
else
{
// CASO AS COORDENADAS ESTEJAM TROCADAS
if (fscanf(file, "%d;%d\n", &coords_markers[i][j].y, &coords_markers[i][j].x) != 2 ||
coords_markers[i][j].x < 0 || coords_markers[i][j].y < 0)
printError("readFile", "Invalid coords values in file");
}
}
}
}
int i = num_user_seeds - 1;
int j = marker_sizes[i] - 1;
if (num_user_seeds <= max_markers)
{
if (inverse == 0)
{
if (fscanf(file, "%d;%d", &coords_markers[i][j].x, &coords_markers[i][j].y) != 2 ||
coords_markers[i][j].x < 0 || coords_markers[i][j].y < 0)
printError("readFile", "Invalid coords values in file2");
}
else
{
// CASO AS COORDENADAS ESTEJAM TROCADAS
if (fscanf(file, "%d;%d", &coords_markers[i][j].y, &coords_markers[i][j].x) != 2 ||
coords_markers[i][j].x < 0 || coords_markers[i][j].y < 0)
printError("readFile", "Invalid coords values in file2");
}
}
else
{
num_user_seeds = max_markers;
}
fclose(file);
(*coords_markers_out) = coords_markers;
(*marker_sizes_out) = marker_sizes;
return num_user_seeds;
}
//=============================================================================
// Main
//=============================================================================
// iDISF with removal by class
Image *main_iDISF_scribbles_rem(char *argv, Graph *graph, int n_0, int iterations, Image **border_img, NodeCoords **coords_user_seeds, int num_markers, int *marker_sizes, int function, int all_borders, double c1, double c2, int obj_markers)
{
Image *label_img;
// Validation of user's inputs
if (n_0 < 0 || iterations <= 0 || function <= 0 || function > 6 || num_markers < 1)
{
usage_iDISF_scribbles_rem(argv);
printError("main", "Too many/few parameters or invalid params values!");
}
label_img = runiDISF_scribbles_rem(graph, n_0, iterations, border_img, coords_user_seeds, num_markers, marker_sizes, function, all_borders, c1, c2, obj_markers);
return label_img;
}
// iDISF with removal by relevance
Image *main_iDISF(char *argv, Graph *graph, int n_0, int n_f, Image **border_img, NodeCoords **coords_user_seeds, int num_markers, int *marker_sizes, int function, int all_borders, double c1, double c2, int obj_markers)
{
Image *label_img;
// Validation of user's inputs
if (n_0 < 0 || n_f < 1 || function <= 0 || function > 6 || num_markers < 1)
{
usage_iDISF(argv);
printError("main", "Too many/few parameters or invalid params values!");
}
label_img = runiDISF(graph, n_0, n_f, border_img, coords_user_seeds, num_markers, marker_sizes, function, all_borders, c1, c2, obj_markers);
return label_img;
}
int main(int argc, char *argv[])
{
// input args
char imagePath[255];
char fileObjSeeds[255];
char fileSeeds[256];
int n_0, iterations, n_f;
int function;
int all_borders;
double c1, c2;
int max_markers;
int obj_markers;
int seedRemoveOption;
int i;
// structures used
Image *img, *border_img, *label_img, *ovlay_img;
NodeCoords **coords_user_seeds;
Graph *graph;
clock_t time;
// others
int num_markers, *marker_sizes = NULL;
char *pch, *imageName;
char ovlayName[255], labelsName[255], bordersName[255];
char xseeds[255], yseeds[255], n0[255], it[255], f[255];
char inverse[255];
char all[255];
char c1_char[256], c2_char[256];
char output[256];
char maxMarkers[256];
char objMarkers[256];
char fileName[256];
char nf[256];
char seedRemoveOption_char[256];
// get arguments
parseArgs(argv, argc, (char *)"--rem", seedRemoveOption_char);
parseArgs(argv, argc, (char *)"--i", imagePath);
parseArgs(argv, argc, (char *)"--n0", n0);
parseArgs(argv, argc, (char *)"--f", f);
parseArgs(argv, argc, (char *)"--nf", nf); // used only in iDISF with removal by relevance
parseArgs(argv, argc, (char *)"--it", it); // used only in iDISF with removal by class
parseArgs(argv, argc, (char *)"--xseeds", xseeds);
parseArgs(argv, argc, (char *)"--yseeds", yseeds);
parseArgs(argv, argc, (char *)"--file", fileObjSeeds);
parseArgs(argv, argc, (char *)"--inverse", inverse);
parseArgs(argv, argc, (char *)"--all", all);
parseArgs(argv, argc, (char *)"--c1", c1_char);
parseArgs(argv, argc, (char *)"--c2", c2_char);
parseArgs(argv, argc, (char *)"--max_markers", maxMarkers);
parseArgs(argv, argc, (char *)"--obj_markers", objMarkers);
parseArgs(argv, argc, (char *)"--o", output);
// mandatory args
iterations = atoi(it);
function = atoi(f);
if (strcmp(seedRemoveOption_char, "-") != 0)
{
int tmp = atoi(seedRemoveOption_char);
if (tmp > 0 && tmp <= 4)
seedRemoveOption = tmp;
else
seedRemoveOption = 1;
}
else
seedRemoveOption = 1;
// some optional args
if (strcmp(n0, "-") != 0)
n_0 = atoi(n0);
else
n_0 = -1; // dont reduces the object seed set
if (strcmp(nf, "-") != 0)
n_f = atoi(nf);
else
n_f = -1;
if (strcmp(all, "-") != 0)
all_borders = 1;
else
all_borders = 0;
if (strcmp(maxMarkers, "-") != 0)
max_markers = atoi(maxMarkers);
else
max_markers = -1;
if (strcmp(c1_char, "-") != 0)
c1 = atof(c1_char);
else
c1 = 0.7;
if (strcmp(c2_char, "-") != 0)
c2 = atof(c2_char);
else
c2 = 0.8;
// Load image and get the user-defined params
if (strcmp(imagePath, "-") == 0)
{
printError("main", "ERROR: Missing image path with flag --i!");
}
img = loadImage(imagePath);
// Get object seeds coords in a txt file
if (strcmp(fileObjSeeds, "-") != 0)
num_markers = readMarkersFile(fileObjSeeds, max_markers, &marker_sizes, &coords_user_seeds, strcmp(inverse, "-"));
else
{
// get one point object seed
if (strcmp(xseeds, "-") != 0 && strcmp(yseeds, "-") != 0)
{
num_markers = 1;
marker_sizes = (int *)allocMem(num_markers, sizeof(int));
marker_sizes[0] = 1;
coords_user_seeds = (NodeCoords **)allocMem(num_markers, sizeof(NodeCoords *));
coords_user_seeds[0] = (NodeCoords *)allocMem(1, sizeof(NodeCoords));
coords_user_seeds[0][0].x = atoi(xseeds);
coords_user_seeds[0][0].y = atoi(yseeds);
}
else
{
// dont have object seed
num_markers = 0;
coords_user_seeds = NULL;
}
}
if (strcmp(objMarkers, "-") != 0)
obj_markers = MIN(num_markers, MAX(1, atoi(objMarkers)));
else
obj_markers = num_markers;
// Get only the image name
pch = strtok(imagePath, "/");
imageName = pch;
while (pch != NULL)
{
imageName = pch;
pch = strtok(NULL, "/");
}
pch = strtok(imageName, ".");
imageName = pch;
// Create auxiliary data structures
border_img = createImage(img->num_rows, img->num_cols, 1);
graph = createGraph(img);
//printf("Segmentation mode \n");
time = clock();
switch (seedRemoveOption)
{
case 1:
//printf("running runiDISF_scribbles_rem \n");
label_img = main_iDISF_scribbles_rem(argv[0], graph, n_0, iterations, &border_img, coords_user_seeds, num_markers, marker_sizes, function, all_borders, c1, c2, obj_markers);
break;
case 2:
//printf("running runiDISF \n");
label_img = main_iDISF(argv[0], graph, n_0, n_f, &border_img, coords_user_seeds, num_markers, marker_sizes, function, all_borders, c1, c2, obj_markers);
break;
default:
break;
}
time = clock() - time;
freeGraph(&graph);
// Overlay superpixel's borders into a copy of the original image
ovlay_img = overlayBorders(img, border_img);
freeImage(&img);
printf("%.3f\n\n", ((double)time) / CLOCKS_PER_SEC);
// read the image name to write in results
if (strcmp(output, "-") != 0)
{
sprintf(ovlayName, "%s_ovlay.ppm", output);
sprintf(labelsName, "%s_labels.pgm", output);
sprintf(bordersName, "%s_borders.pgm", output);
}
else
{
switch (seedRemoveOption)
{
case 1:
sprintf(ovlayName, "%s_n0-%d_it-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_ovlay.ppm", imageName, n_0, iterations, c1, c2, function, num_markers, seedRemoveOption);
sprintf(labelsName, "%s_n0-%d_it-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_labels.pgm", imageName, n_0, iterations, c1, c2, function, num_markers, seedRemoveOption);
sprintf(bordersName, "%s_n0-%d_it-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_borders.pgm", imageName, n_0, iterations, c1, c2, function, num_markers, seedRemoveOption);
break;
case 2:
sprintf(ovlayName, "%s_n0-%d_nf-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_ovlay.ppm", imageName, n_0, n_f, c1, c2, function, num_markers, seedRemoveOption);
sprintf(labelsName, "%s_n0-%d_nf-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_labels.pgm", imageName, n_0, n_f, c1, c2, function, num_markers, seedRemoveOption);
sprintf(bordersName, "%s_n0-%d_nf-%d_c1-%.1f_c2-%.1f_f%d_numMarkers%d_segm%d_borders.pgm", imageName, n_0, n_f, c1, c2, function, num_markers, seedRemoveOption);
break;
default:
break;
}
}
// Save the segmentation results
writeImagePPM(ovlay_img, ovlayName);
writeImagePGM(label_img, labelsName);
writeImagePGM(border_img, bordersName);
// Free
for (i = 0; i < num_markers; ++i)
{
freeMem(coords_user_seeds[i]);
}
freeImage(&img);
freeImage(&label_img);
freeImage(&border_img);
freeImage(&ovlay_img);
freeMem(coords_user_seeds);
free(marker_sizes);
}
//=============================================================================
// Image* Functions
//=============================================================================
Image *loadImage(const char *filepath)
{
int num_channels, num_rows, num_cols, num_nodes;
int i, j;
unsigned char *data;
Image *new_img;
data = stbi_load(filepath, &num_cols, &num_rows, &num_channels, 0);
if (data == NULL)
printError("loadImage", "Could not load the image <%s>", filepath);
new_img = createImage(num_rows, num_cols, num_channels);
num_nodes = num_rows * num_cols;
/*#pragma omp parallel for private(i, j) \
firstprivate(num_nodes, num_channels) \
shared(new_img, data)*/
for (i = 0; i < num_nodes; i++)
{
new_img->val[i] = (int *)calloc(num_channels, sizeof(int));
for (j = 0; j < num_channels; j++)
{
new_img->val[i][j] = data[i * num_channels + j];
}
}
stbi_image_free(data);
return new_img;
}
Image *overlayBorders(Image *img, Image *border_img)
{
const float BORDER_sRGB[] = {0.0, 1.0, 1.0}; // Cyan
int normval, i, j, num_channels, img_num_channels, num_pixels;
Image *ovlay_img;
normval = getNormValue(img);
ovlay_img = createImage(img->num_rows, img->num_cols, 3);
num_channels = ovlay_img->num_channels;
img_num_channels = img->num_channels;
num_pixels = img->num_pixels;
#pragma omp parallel for private(i, j) \
firstprivate(num_channels, num_pixels, img_num_channels, normval) \
shared(ovlay_img, border_img, img, BORDER_sRGB)
for (i = 0; i < num_pixels; i++)
{
for (j = 0; j < num_channels; j++)
{
if (border_img->val[i][0] != 0)
ovlay_img->val[i][j] = BORDER_sRGB[j] * normval;
else if (img_num_channels == 1) // It will convert the image to PPM
ovlay_img->val[i][j] = img->val[i][0];
else
ovlay_img->val[i][j] = img->val[i][j];
}
}
return ovlay_img;
}
//=============================================================================
// Void Functions
//=============================================================================
void writeImagePPM(Image *img, char *filepath)
{
int max_val, min_val;
FILE *fp;
max_val = getMaximumValue(img, -1);
min_val = getMinimumValue(img, -1);
fp = fopen(filepath, "wb");
if (fp == NULL)
printError("writeImagePPM", "Could not open the file %s", filepath);
fprintf(fp, "P6\n");
fprintf(fp, "%d %d\n", img->num_cols, img->num_rows);
fprintf(fp, "%d\n", max_val);
// 8-bit PPM file
if (max_val < 256 && min_val >= 0)
{
unsigned char *rgb;
rgb = (unsigned char *)allocMem(img->num_channels, sizeof(unsigned char));
for (int i = 0; i < img->num_pixels; i++)
{
for (int c = 0; c < img->num_channels; c++)
rgb[c] = img->val[i][c];
fwrite(rgb, 1, img->num_channels, fp);
}
freeMem(rgb);
}
// 16-bit PPM file
else if (max_val < 65536 && min_val >= 0)
{
unsigned short *rgb;
rgb = (unsigned short *)allocMem(img->num_channels, sizeof(unsigned short));
for (int i = 0; i < img->num_pixels; i++)
{
for (int c = 0; c < img->num_channels; c++)
rgb[c] = ((img->val[i][c] & 0xff) << 8) | ((unsigned short)img->val[i][c] >> 8);
fwrite(rgb, 2, img->num_channels, fp);
}
freeMem(rgb);
}
else
printError("writeImagePPM", "Invalid max and/or min vals %d, %d", max_val, min_val);
fclose(fp);
}
void writeImagePGM(Image *img, char *filepath)
{
int max_val, min_val, i;
FILE *fp;
int num_pixels;
num_pixels = img->num_pixels;
fp = fopen(filepath, "wb");
if (fp == NULL)
printError("writeImagePGM", "Could not open the file <%s>", filepath);
max_val = getMaximumValue(img, -1);
min_val = getMinimumValue(img, -1);
//printf("max_val:%d, min_val:%d \n", max_val, min_val);
fprintf(fp, "P5\n");
fprintf(fp, "%d %d\n", img->num_cols, img->num_rows);
fprintf(fp, "%d\n", max_val);
// 8-bit PGM file
if (max_val < 256 && min_val >= 0)
{
unsigned char *data;
data = (unsigned char *)calloc(num_pixels, sizeof(unsigned char));
#pragma omp parallel for private(i) \
firstprivate(num_pixels) \
shared(data, img)
for (i = 0; i < num_pixels; i++)
data[i] = (unsigned char)img->val[i][0];
fwrite(data, sizeof(unsigned char), num_pixels, fp);
free(data);
}
// 16-bit PGM file
else if (max_val < 65536 && min_val >= 0)
{
unsigned short *data;
data = (unsigned short *)calloc(num_pixels, sizeof(unsigned short));
#pragma omp parallel for private(i) \
firstprivate(num_pixels) \
shared(data, img)
for (i = 0; i < num_pixels; i++)
data[i] = (unsigned short)img->val[i][0];
for (i = 0; i < num_pixels; i++)
{
int high, low;
high = ((data[i]) & 0x0000FF00) >> 8;
low = (data[i]) & 0x000000FF;
fputc(high, fp);
fputc(low, fp);
}
free(data);
}
else
printError("writeImagePGM", "Invalid min/max spel values <%d,%d>", min_val, max_val);
fclose(fp);
}