From 0f645836f193e75c4c3b718369e6fab15b5d19c5 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Wed, 11 Feb 2015 03:41:03 +0000
Subject: [PATCH] Detection is back, baby\!
---
src/image.c | 273 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 264 insertions(+), 9 deletions(-)
diff --git a/src/image.c b/src/image.c
index fad454d..a686a3e 100644
--- a/src/image.c
+++ b/src/image.c
@@ -4,6 +4,63 @@
int windows = 0;
+void draw_box(image a, int x1, int y1, int x2, int y2)
+{
+ int i, c;
+ if(x1 < 0) x1 = 0;
+ if(x1 >= a.w) x1 = a.w-1;
+ if(x2 < 0) x2 = 0;
+ if(x2 >= a.w) x2 = a.w-1;
+
+ if(y1 < 0) y1 = 0;
+ if(y1 >= a.h) y1 = a.h-1;
+ if(y2 < 0) y2 = 0;
+ if(y2 >= a.h) y2 = a.h-1;
+
+ for(c = 0; c < a.c; ++c){
+ for(i = x1; i < x2; ++i){
+ a.data[i + y1*a.w + c*a.w*a.h] = (c==0)?1:-1;
+ a.data[i + y2*a.w + c*a.w*a.h] = (c==0)?1:-1;
+ }
+ }
+ for(c = 0; c < a.c; ++c){
+ for(i = y1; i < y2; ++i){
+ a.data[x1 + i*a.w + c*a.w*a.h] = (c==0)?1:-1;
+ a.data[x2 + i*a.w + c*a.w*a.h] = (c==0)?1:-1;
+ }
+ }
+}
+
+void jitter_image(image a, int h, int w, int dh, int dw)
+{
+ int i,j,k;
+ for(k = 0; k < a.c; ++k){
+ for(i = 0; i < h; ++i){
+ for(j = 0; j < w; ++j){
+ int src = j + dw + (i+dh)*a.w + k*a.w*a.h;
+ int dst = j + i*w + k*w*h;
+ //printf("%d %d\n", src, dst);
+ a.data[dst] = a.data[src];
+ }
+ }
+ }
+}
+
+image image_distance(image a, image b)
+{
+ int i,j;
+ image dist = make_image(a.h, a.w, 1);
+ for(i = 0; i < a.c; ++i){
+ for(j = 0; j < a.h*a.w; ++j){
+ dist.data[j] += pow(a.data[i*a.h*a.w+j]-b.data[i*a.h*a.w+j],2);
+ }
+ }
+ for(j = 0; j < a.h*a.w; ++j){
+ dist.data[j] = sqrt(dist.data[j]);
+ }
+ return dist;
+}
+
void subtract_image(image a, image b)
{
int i;
@@ -98,6 +155,7 @@
return copy;
}
+
void show_image(image p, char *name)
{
int i,j,k;
@@ -121,8 +179,8 @@
}
}
free_image(copy);
- if(disp->height < 500 || disp->width < 500){
- int w = 1500;
+ if(disp->height < 500 || disp->width < 500 || disp->height > 1000){
+ int w = 500;
int h = w*p.h/p.w;
if(h > 1000){
h = 1000;
@@ -137,6 +195,30 @@
cvReleaseImage(&disp);
}
+void save_image(image p, char *name)
+{
+ int i,j,k;
+ image copy = copy_image(p);
+ normalize_image(copy);
+
+ char buff[256];
+ //sprintf(buff, "%s (%d)", name, windows);
+ sprintf(buff, "%s.png", name);
+
+ IplImage *disp = cvCreateImage(cvSize(p.w,p.h), IPL_DEPTH_8U, p.c);
+ int step = disp->widthStep;
+ for(i = 0; i < p.h; ++i){
+ for(j = 0; j < p.w; ++j){
+ for(k= 0; k < p.c; ++k){
+ disp->imageData[i*step + j*p.c + k] = (unsigned char)(get_pixel(copy,i,j,k)*255);
+ }
+ }
+ }
+ free_image(copy);
+ cvSaveImage(buff, disp,0);
+ cvReleaseImage(&disp);
+}
+
void show_image_layers(image p, char *name)
{
int i;
@@ -159,6 +241,7 @@
image make_empty_image(int h, int w, int c)
{
image out;
+ out.data = 0;
out.h = h;
out.w = w;
out.c = c;
@@ -212,7 +295,19 @@
return out;
}
-void add_scalar_image(image m, float s)
+void add_into_image(image src, image dest, int h, int w)
+{
+ int i,j,k;
+ for(k = 0; k < src.c; ++k){
+ for(i = 0; i < src.h; ++i){
+ for(j = 0; j < src.w; ++j){
+ add_pixel(dest, h+i, w+j, k, get_pixel(src, i, j, k));
+ }
+ }
+ }
+}
+
+void translate_image(image m, float s)
{
int i;
for(i = 0; i < m.h*m.w*m.c; ++i) m.data[i] += s;
@@ -316,7 +411,6 @@
// Will do a scaled image resize with the correct aspect ratio.
outImg = resizeImage(croppedImg, newHeight, newWidth, 0);
cvReleaseImage( &croppedImg );
-
}
else {
@@ -362,6 +456,25 @@
return out;
}
+image load_image_color(char *filename, int h, int w)
+{
+ IplImage* src = 0;
+ if( (src = cvLoadImage(filename, 1)) == 0 )
+ {
+ printf("Cannot load file image %s\n", filename);
+ exit(0);
+ }
+ if(h && w && (src->height != h || src->width != w)){
+ //printf("Resized!\n");
+ IplImage *resized = resizeImage(src, h, w, 0);
+ cvReleaseImage(&src);
+ src = resized;
+ }
+ image out = ipl_to_image(src);
+ cvReleaseImage(&src);
+ return out;
+}
+
image load_image(char *filename, int h, int w)
{
IplImage* src = 0;
@@ -370,9 +483,11 @@
printf("Cannot load file image %s\n", filename);
exit(0);
}
- IplImage *resized = resizeImage(src, h, w, 1);
- cvReleaseImage(&src);
- src = resized;
+ if(h && w ){
+ IplImage *resized = resizeImage(src, h, w, 0);
+ cvReleaseImage(&src);
+ src = resized;
+ }
image out = ipl_to_image(src);
cvReleaseImage(&src);
return out;
@@ -387,6 +502,20 @@
}
return out;
}
+image get_sub_image(image m, int h, int w, int dh, int dw)
+{
+ image out = make_image(dh, dw, m.c);
+ int i,j,k;
+ for(k = 0; k < out.c; ++k){
+ for(i = 0; i < dh; ++i){
+ for(j = 0; j < dw; ++j){
+ float val = get_pixel(m, h+i, w+j, k);
+ set_pixel(out, i, j, k, val);
+ }
+ }
+ }
+ return out;
+}
float get_pixel(image m, int x, int y, int c)
{
@@ -573,11 +702,137 @@
void print_image(image m)
{
- int i;
- for(i =0 ; i < m.h*m.w*m.c; ++i) printf("%lf, ", m.data[i]);
+ int i, j, k;
+ for(i =0 ; i < m.c; ++i){
+ for(j =0 ; j < m.h; ++j){
+ for(k = 0; k < m.w; ++k){
+ printf("%.2lf, ", m.data[i*m.h*m.w + j*m.w + k]);
+ if(k > 30) break;
+ }
+ printf("\n");
+ if(j > 30) break;
+ }
+ printf("\n");
+ }
printf("\n");
}
+image collapse_images_vert(image *ims, int n)
+{
+ int color = 1;
+ int border = 1;
+ int h,w,c;
+ w = ims[0].w;
+ h = (ims[0].h + border) * n - border;
+ c = ims[0].c;
+ if(c != 3 || !color){
+ w = (w+border)*c - border;
+ c = 1;
+ }
+
+ image filters = make_image(h,w,c);
+ int i,j;
+ for(i = 0; i < n; ++i){
+ int h_offset = i*(ims[0].h+border);
+ image copy = copy_image(ims[i]);
+ //normalize_image(copy);
+ if(c == 3 && color){
+ embed_image(copy, filters, h_offset, 0);
+ }
+ else{
+ for(j = 0; j < copy.c; ++j){
+ int w_offset = j*(ims[0].w+border);
+ image layer = get_image_layer(copy, j);
+ embed_image(layer, filters, h_offset, w_offset);
+ free_image(layer);
+ }
+ }
+ free_image(copy);
+ }
+ return filters;
+}
+
+image collapse_images_horz(image *ims, int n)
+{
+ int color = 1;
+ int border = 1;
+ int h,w,c;
+ int size = ims[0].h;
+ h = size;
+ w = (ims[0].w + border) * n - border;
+ c = ims[0].c;
+ if(c != 3 || !color){
+ h = (h+border)*c - border;
+ c = 1;
+ }
+
+ image filters = make_image(h,w,c);
+ int i,j;
+ for(i = 0; i < n; ++i){
+ int w_offset = i*(size+border);
+ image copy = copy_image(ims[i]);
+ //normalize_image(copy);
+ if(c == 3 && color){
+ embed_image(copy, filters, 0, w_offset);
+ }
+ else{
+ for(j = 0; j < copy.c; ++j){
+ int h_offset = j*(size+border);
+ image layer = get_image_layer(copy, j);
+ embed_image(layer, filters, h_offset, w_offset);
+ free_image(layer);
+ }
+ }
+ free_image(copy);
+ }
+ return filters;
+}
+
+void show_images(image *ims, int n, char *window)
+{
+ image m = collapse_images_vert(ims, n);
+ save_image(m, window);
+ show_image(m, window);
+ free_image(m);
+}
+
+image grid_images(image **ims, int h, int w)
+{
+ int i;
+ image *rows = calloc(h, sizeof(image));
+ for(i = 0; i < h; ++i){
+ rows[i] = collapse_images_horz(ims[i], w);
+ }
+ image out = collapse_images_vert(rows, h);
+ for(i = 0; i < h; ++i){
+ free_image(rows[i]);
+ }
+ free(rows);
+ return out;
+}
+
+void test_grid()
+{
+ int i,j;
+ int num = 3;
+ int topk = 3;
+ image **vizs = calloc(num, sizeof(image*));
+ for(i = 0; i < num; ++i){
+ vizs[i] = calloc(topk, sizeof(image));
+ for(j = 0; j < topk; ++j) vizs[i][j] = make_image(3,3,3);
+ }
+ image grid = grid_images(vizs, num, topk);
+ save_image(grid, "Test Grid");
+ free_image(grid);
+}
+
+void show_images_grid(image **ims, int h, int w, char *window)
+{
+ image out = grid_images(ims, h, w);
+ show_image(out, window);
+ free_image(out);
+}
+
void free_image(image m)
{
free(m.data);
--
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