From c7b10ceadb1a78e7480d281444a31ae2a7dc1b05 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Fri, 06 May 2016 23:25:16 +0000
Subject: [PATCH] so much need to commit
---
src/image.c | 1368 +++++++++++++++++++++++++++++++---------------------------
1 files changed, 732 insertions(+), 636 deletions(-)
diff --git a/src/image.c b/src/image.c
index 60ccfb8..aff5f64 100644
--- a/src/image.c
+++ b/src/image.c
@@ -4,11 +4,6 @@
#include <stdio.h>
#include <math.h>
-#ifdef OPENCV
-#include "opencv2/highgui/highgui_c.h"
-#include "opencv2/imgproc/imgproc_c.h"
-#endif
-
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
#define STB_IMAGE_WRITE_IMPLEMENTATION
@@ -115,6 +110,7 @@
float prob = probs[i][class];
if(prob > thresh){
int width = pow(prob, 1./2.)*10+1;
+ width = 8;
printf("%s: %.2f\n", names[class], prob);
int offset = class*17 % classes;
float red = get_color(0,offset,classes);
@@ -142,6 +138,42 @@
}
}
+void transpose_image(image im)
+{
+ assert(im.w == im.h);
+ int n, m;
+ int c;
+ for(c = 0; c < im.c; ++c){
+ for(n = 0; n < im.w-1; ++n){
+ for(m = n + 1; m < im.w; ++m){
+ float swap = im.data[m + im.w*(n + im.h*c)];
+ im.data[m + im.w*(n + im.h*c)] = im.data[n + im.w*(m + im.h*c)];
+ im.data[n + im.w*(m + im.h*c)] = swap;
+ }
+ }
+ }
+}
+
+void rotate_image_cw(image im, int times)
+{
+ assert(im.w == im.h);
+ times = (times + 400) % 4;
+ int i, x, y, c;
+ int n = im.w;
+ for(i = 0; i < times; ++i){
+ for(c = 0; c < im.c; ++c){
+ for(x = 0; x < n/2; ++x){
+ for(y = 0; y < (n-1)/2 + 1; ++y){
+ float temp = im.data[y + im.w*(x + im.h*c)];
+ im.data[y + im.w*(x + im.h*c)] = im.data[n-1-x + im.w*(y + im.h*c)];
+ im.data[n-1-x + im.w*(y + im.h*c)] = im.data[n-1-y + im.w*(n-1-x + im.h*c)];
+ im.data[n-1-y + im.w*(n-1-x + im.h*c)] = im.data[x + im.w*(n-1-y + im.h*c)];
+ im.data[x + im.w*(n-1-y + im.h*c)] = temp;
+ }
+ }
+ }
+ }
+}
void flip_image(image a)
{
@@ -299,692 +331,756 @@
}
cvShowImage(buff, disp);
cvReleaseImage(&disp);
-}
+ }
#endif
-void show_image(image p, const char *name)
-{
+ void show_image(image p, const char *name)
+ {
#ifdef OPENCV
- show_image_cv(p, name);
+ show_image_cv(p, name);
#else
- fprintf(stderr, "Not compiled with OpenCV, saving to %s.png instead\n", name);
- save_image(p, name);
+ fprintf(stderr, "Not compiled with OpenCV, saving to %s.png instead\n", name);
+ save_image(p, name);
#endif
-}
-
-void save_image(image im, const char *name)
-{
- char buff[256];
- //sprintf(buff, "%s (%d)", name, windows);
- sprintf(buff, "%s.png", name);
- unsigned char *data = calloc(im.w*im.h*im.c, sizeof(char));
- int i,k;
- for(k = 0; k < im.c; ++k){
- for(i = 0; i < im.w*im.h; ++i){
- data[i*im.c+k] = (unsigned char) (255*im.data[i + k*im.w*im.h]);
- }
}
- int success = stbi_write_png(buff, im.w, im.h, im.c, data, im.w*im.c);
- free(data);
- if(!success) fprintf(stderr, "Failed to write image %s\n", buff);
-}
+
+ void save_image(image im, const char *name)
+ {
+ char buff[256];
+ //sprintf(buff, "%s (%d)", name, windows);
+ sprintf(buff, "%s.png", name);
+ unsigned char *data = calloc(im.w*im.h*im.c, sizeof(char));
+ int i,k;
+ for(k = 0; k < im.c; ++k){
+ for(i = 0; i < im.w*im.h; ++i){
+ data[i*im.c+k] = (unsigned char) (255*im.data[i + k*im.w*im.h]);
+ }
+ }
+ int success = stbi_write_png(buff, im.w, im.h, im.c, data, im.w*im.c);
+ free(data);
+ if(!success) fprintf(stderr, "Failed to write image %s\n", buff);
+ }
#ifdef OPENCV
-void save_image_jpg(image p, char *name)
-{
- image copy = copy_image(p);
- rgbgr_image(copy);
- int x,y,k;
-
- char buff[256];
- sprintf(buff, "%s.jpg", name);
-
- IplImage *disp = cvCreateImage(cvSize(p.w,p.h), IPL_DEPTH_8U, p.c);
- int step = disp->widthStep;
- for(y = 0; y < p.h; ++y){
- for(x = 0; x < p.w; ++x){
- for(k= 0; k < p.c; ++k){
- disp->imageData[y*step + x*p.c + k] = (unsigned char)(get_pixel(copy,x,y,k)*255);
- }
- }
+ image get_image_from_stream(CvCapture *cap)
+ {
+ IplImage* src = cvQueryFrame(cap);
+ image im = ipl_to_image(src);
+ rgbgr_image(im);
+ return im;
}
- cvSaveImage(buff, disp,0);
- cvReleaseImage(&disp);
- free_image(copy);
-}
#endif
-void show_image_layers(image p, char *name)
-{
- int i;
- char buff[256];
- for(i = 0; i < p.c; ++i){
- sprintf(buff, "%s - Layer %d", name, i);
- image layer = get_image_layer(p, i);
- show_image(layer, buff);
- free_image(layer);
- }
-}
+#ifdef OPENCV
+ void save_image_jpg(image p, char *name)
+ {
+ image copy = copy_image(p);
+ rgbgr_image(copy);
+ int x,y,k;
-void show_image_collapsed(image p, char *name)
-{
- image c = collapse_image_layers(p, 1);
- show_image(c, name);
- free_image(c);
-}
+ char buff[256];
+ sprintf(buff, "%s.jpg", name);
-image make_empty_image(int w, int h, int c)
-{
- image out;
- out.data = 0;
- out.h = h;
- out.w = w;
- out.c = c;
- return out;
-}
-
-image make_image(int w, int h, int c)
-{
- image out = make_empty_image(w,h,c);
- out.data = calloc(h*w*c, sizeof(float));
- return out;
-}
-
-image make_random_image(int w, int h, int c)
-{
- image out = make_empty_image(w,h,c);
- out.data = calloc(h*w*c, sizeof(float));
- int i;
- for(i = 0; i < w*h*c; ++i){
- out.data[i] = (rand_normal() * .25) + .5;
- }
- return out;
-}
-
-image float_to_image(int w, int h, int c, float *data)
-{
- image out = make_empty_image(w,h,c);
- out.data = data;
- return out;
-}
-
-image rotate_image(image im, float rad)
-{
- int x, y, c;
- float cx = im.w/2.;
- float cy = im.h/2.;
- image rot = make_image(im.w, im.h, im.c);
- for(c = 0; c < im.c; ++c){
- for(y = 0; y < im.h; ++y){
- for(x = 0; x < im.w; ++x){
- float rx = cos(rad)*(x-cx) - sin(rad)*(y-cy) + cx;
- float ry = sin(rad)*(x-cx) + cos(rad)*(y-cy) + cy;
- float val = bilinear_interpolate(im, rx, ry, c);
- set_pixel(rot, x, y, c, val);
- }
- }
- }
- return rot;
-}
-
-void translate_image(image m, float s)
-{
- int i;
- for(i = 0; i < m.h*m.w*m.c; ++i) m.data[i] += s;
-}
-
-void scale_image(image m, float s)
-{
- int i;
- for(i = 0; i < m.h*m.w*m.c; ++i) m.data[i] *= s;
-}
-
-image crop_image(image im, int dx, int dy, int w, int h)
-{
- image cropped = make_image(w, h, im.c);
- int i, j, k;
- for(k = 0; k < im.c; ++k){
- for(j = 0; j < h; ++j){
- for(i = 0; i < w; ++i){
- int r = j + dy;
- int c = i + dx;
- float val = 0;
- if (r >= 0 && r < im.h && c >= 0 && c < im.w) {
- val = get_pixel(im, c, r, k);
- }
- set_pixel(cropped, i, j, k, val);
- }
- }
- }
- return cropped;
-}
-
-float three_way_max(float a, float b, float c)
-{
- return (a > b) ? ( (a > c) ? a : c) : ( (b > c) ? b : c) ;
-}
-
-float three_way_min(float a, float b, float c)
-{
- return (a < b) ? ( (a < c) ? a : c) : ( (b < c) ? b : c) ;
-}
-
-// http://www.cs.rit.edu/~ncs/color/t_convert.html
-void rgb_to_hsv(image im)
-{
- assert(im.c == 3);
- int i, j;
- float r, g, b;
- float h, s, v;
- for(j = 0; j < im.h; ++j){
- for(i = 0; i < im.w; ++i){
- r = get_pixel(im, i , j, 0);
- g = get_pixel(im, i , j, 1);
- b = get_pixel(im, i , j, 2);
- float max = three_way_max(r,g,b);
- float min = three_way_min(r,g,b);
- float delta = max - min;
- v = max;
- if(max == 0){
- s = 0;
- h = -1;
- }else{
- s = delta/max;
- if(r == max){
- h = (g - b) / delta;
- } else if (g == max) {
- h = 2 + (b - r) / delta;
- } else {
- h = 4 + (r - g) / delta;
- }
- if (h < 0) h += 6;
- }
- set_pixel(im, i, j, 0, h);
- set_pixel(im, i, j, 1, s);
- set_pixel(im, i, j, 2, v);
- }
- }
-}
-
-void hsv_to_rgb(image im)
-{
- assert(im.c == 3);
- int i, j;
- float r, g, b;
- float h, s, v;
- float f, p, q, t;
- for(j = 0; j < im.h; ++j){
- for(i = 0; i < im.w; ++i){
- h = get_pixel(im, i , j, 0);
- s = get_pixel(im, i , j, 1);
- v = get_pixel(im, i , j, 2);
- if (s == 0) {
- r = g = b = v;
- } else {
- int index = floor(h);
- f = h - index;
- p = v*(1-s);
- q = v*(1-s*f);
- t = v*(1-s*(1-f));
- if(index == 0){
- r = v; g = t; b = p;
- } else if(index == 1){
- r = q; g = v; b = p;
- } else if(index == 2){
- r = p; g = v; b = t;
- } else if(index == 3){
- r = p; g = q; b = v;
- } else if(index == 4){
- r = t; g = p; b = v;
- } else {
- r = v; g = p; b = q;
+ IplImage *disp = cvCreateImage(cvSize(p.w,p.h), IPL_DEPTH_8U, p.c);
+ int step = disp->widthStep;
+ for(y = 0; y < p.h; ++y){
+ for(x = 0; x < p.w; ++x){
+ for(k= 0; k < p.c; ++k){
+ disp->imageData[y*step + x*p.c + k] = (unsigned char)(get_pixel(copy,x,y,k)*255);
}
}
- set_pixel(im, i, j, 0, r);
- set_pixel(im, i, j, 1, g);
- set_pixel(im, i, j, 2, b);
+ }
+ cvSaveImage(buff, disp,0);
+ cvReleaseImage(&disp);
+ free_image(copy);
+ }
+#endif
+
+ void show_image_layers(image p, char *name)
+ {
+ int i;
+ char buff[256];
+ for(i = 0; i < p.c; ++i){
+ sprintf(buff, "%s - Layer %d", name, i);
+ image layer = get_image_layer(p, i);
+ show_image(layer, buff);
+ free_image(layer);
}
}
-}
-image grayscale_image(image im)
-{
- assert(im.c == 3);
- int i, j, k;
- image gray = make_image(im.w, im.h, 1);
- float scale[] = {0.587, 0.299, 0.114};
- for(k = 0; k < im.c; ++k){
+ void show_image_collapsed(image p, char *name)
+ {
+ image c = collapse_image_layers(p, 1);
+ show_image(c, name);
+ free_image(c);
+ }
+
+ image make_empty_image(int w, int h, int c)
+ {
+ image out;
+ out.data = 0;
+ out.h = h;
+ out.w = w;
+ out.c = c;
+ return out;
+ }
+
+ image make_image(int w, int h, int c)
+ {
+ image out = make_empty_image(w,h,c);
+ out.data = calloc(h*w*c, sizeof(float));
+ return out;
+ }
+
+ image make_random_image(int w, int h, int c)
+ {
+ image out = make_empty_image(w,h,c);
+ out.data = calloc(h*w*c, sizeof(float));
+ int i;
+ for(i = 0; i < w*h*c; ++i){
+ out.data[i] = (rand_normal() * .25) + .5;
+ }
+ return out;
+ }
+
+ image float_to_image(int w, int h, int c, float *data)
+ {
+ image out = make_empty_image(w,h,c);
+ out.data = data;
+ return out;
+ }
+
+ image rotate_image(image im, float rad)
+ {
+ int x, y, c;
+ float cx = im.w/2.;
+ float cy = im.h/2.;
+ image rot = make_image(im.w, im.h, im.c);
+ for(c = 0; c < im.c; ++c){
+ for(y = 0; y < im.h; ++y){
+ for(x = 0; x < im.w; ++x){
+ float rx = cos(rad)*(x-cx) - sin(rad)*(y-cy) + cx;
+ float ry = sin(rad)*(x-cx) + cos(rad)*(y-cy) + cy;
+ float val = bilinear_interpolate(im, rx, ry, c);
+ set_pixel(rot, x, y, c, val);
+ }
+ }
+ }
+ return rot;
+ }
+
+ void translate_image(image m, float s)
+ {
+ int i;
+ for(i = 0; i < m.h*m.w*m.c; ++i) m.data[i] += s;
+ }
+
+ void scale_image(image m, float s)
+ {
+ int i;
+ for(i = 0; i < m.h*m.w*m.c; ++i) m.data[i] *= s;
+ }
+
+ image crop_image(image im, int dx, int dy, int w, int h)
+ {
+ image cropped = make_image(w, h, im.c);
+ int i, j, k;
+ for(k = 0; k < im.c; ++k){
+ for(j = 0; j < h; ++j){
+ for(i = 0; i < w; ++i){
+ int r = j + dy;
+ int c = i + dx;
+ float val = 0;
+ if (r >= 0 && r < im.h && c >= 0 && c < im.w) {
+ val = get_pixel(im, c, r, k);
+ }
+ set_pixel(cropped, i, j, k, val);
+ }
+ }
+ }
+ return cropped;
+ }
+
+ image resize_min(image im, int min)
+ {
+ int w = im.w;
+ int h = im.h;
+ if(w < h){
+ h = (h * min) / w;
+ w = min;
+ } else {
+ w = (w * min) / h;
+ h = min;
+ }
+ if(w == im.w && h == im.h) return im;
+ image resized = resize_image(im, w, h);
+ return resized;
+ }
+
+ image random_crop_image(image im, int low, int high, int size)
+ {
+ int r = rand_int(low, high);
+ image resized = resize_min(im, r);
+ int dx = rand_int(0, resized.w - size);
+ int dy = rand_int(0, resized.h - size);
+ image crop = crop_image(resized, dx, dy, size, size);
+
+ if(resized.data != im.data) free_image(resized);
+ return crop;
+ }
+
+ float three_way_max(float a, float b, float c)
+ {
+ return (a > b) ? ( (a > c) ? a : c) : ( (b > c) ? b : c) ;
+ }
+
+ float three_way_min(float a, float b, float c)
+ {
+ return (a < b) ? ( (a < c) ? a : c) : ( (b < c) ? b : c) ;
+ }
+
+ // http://www.cs.rit.edu/~ncs/color/t_convert.html
+ void rgb_to_hsv(image im)
+ {
+ assert(im.c == 3);
+ int i, j;
+ float r, g, b;
+ float h, s, v;
for(j = 0; j < im.h; ++j){
for(i = 0; i < im.w; ++i){
- gray.data[i+im.w*j] += scale[k]*get_pixel(im, i, j, k);
- }
- }
- }
- return gray;
-}
-
-image threshold_image(image im, float thresh)
-{
- int i;
- image t = make_image(im.w, im.h, im.c);
- for(i = 0; i < im.w*im.h*im.c; ++i){
- t.data[i] = im.data[i]>thresh ? 1 : 0;
- }
- return t;
-}
-
-image blend_image(image fore, image back, float alpha)
-{
- assert(fore.w == back.w && fore.h == back.h && fore.c == back.c);
- image blend = make_image(fore.w, fore.h, fore.c);
- int i, j, k;
- for(k = 0; k < fore.c; ++k){
- for(j = 0; j < fore.h; ++j){
- for(i = 0; i < fore.w; ++i){
- float val = alpha * get_pixel(fore, i, j, k) +
- (1 - alpha)* get_pixel(back, i, j, k);
- set_pixel(blend, i, j, k, val);
- }
- }
- }
- return blend;
-}
-
-void scale_image_channel(image im, int c, float v)
-{
- int i, j;
- for(j = 0; j < im.h; ++j){
- for(i = 0; i < im.w; ++i){
- float pix = get_pixel(im, i, j, c);
- pix = pix*v;
- set_pixel(im, i, j, c, pix);
- }
- }
-}
-
-void saturate_image(image im, float sat)
-{
- rgb_to_hsv(im);
- scale_image_channel(im, 1, sat);
- hsv_to_rgb(im);
- constrain_image(im);
-}
-
-void exposure_image(image im, float sat)
-{
- rgb_to_hsv(im);
- scale_image_channel(im, 2, sat);
- hsv_to_rgb(im);
- constrain_image(im);
-}
-
-void saturate_exposure_image(image im, float sat, float exposure)
-{
- rgb_to_hsv(im);
- scale_image_channel(im, 1, sat);
- scale_image_channel(im, 2, exposure);
- hsv_to_rgb(im);
- constrain_image(im);
-}
-
-/*
- image saturate_image(image im, float sat)
- {
- image gray = grayscale_image(im);
- image blend = blend_image(im, gray, sat);
- free_image(gray);
- constrain_image(blend);
- return blend;
- }
-
- image brightness_image(image im, float b)
- {
- image bright = make_image(im.w, im.h, im.c);
- return bright;
- }
- */
-
-float bilinear_interpolate(image im, float x, float y, int c)
-{
- int ix = (int) floorf(x);
- int iy = (int) floorf(y);
-
- float dx = x - ix;
- float dy = y - iy;
-
- float val = (1-dy) * (1-dx) * get_pixel_extend(im, ix, iy, c) +
- dy * (1-dx) * get_pixel_extend(im, ix, iy+1, c) +
- (1-dy) * dx * get_pixel_extend(im, ix+1, iy, c) +
- dy * dx * get_pixel_extend(im, ix+1, iy+1, c);
- return val;
-}
-
-image resize_image(image im, int w, int h)
-{
- image resized = make_image(w, h, im.c);
- image part = make_image(w, im.h, im.c);
- int r, c, k;
- float w_scale = (float)(im.w - 1) / (w - 1);
- float h_scale = (float)(im.h - 1) / (h - 1);
- for(k = 0; k < im.c; ++k){
- for(r = 0; r < im.h; ++r){
- for(c = 0; c < w; ++c){
- float val = 0;
- if(c == w-1 || im.w == 1){
- val = get_pixel(im, im.w-1, r, k);
- } else {
- float sx = c*w_scale;
- int ix = (int) sx;
- float dx = sx - ix;
- val = (1 - dx) * get_pixel(im, ix, r, k) + dx * get_pixel(im, ix+1, r, k);
+ r = get_pixel(im, i , j, 0);
+ g = get_pixel(im, i , j, 1);
+ b = get_pixel(im, i , j, 2);
+ float max = three_way_max(r,g,b);
+ float min = three_way_min(r,g,b);
+ float delta = max - min;
+ v = max;
+ if(max == 0){
+ s = 0;
+ h = -1;
+ }else{
+ s = delta/max;
+ if(r == max){
+ h = (g - b) / delta;
+ } else if (g == max) {
+ h = 2 + (b - r) / delta;
+ } else {
+ h = 4 + (r - g) / delta;
+ }
+ if (h < 0) h += 6;
}
- set_pixel(part, c, r, k, val);
- }
- }
- }
- for(k = 0; k < im.c; ++k){
- for(r = 0; r < h; ++r){
- float sy = r*h_scale;
- int iy = (int) sy;
- float dy = sy - iy;
- for(c = 0; c < w; ++c){
- float val = (1-dy) * get_pixel(part, c, iy, k);
- set_pixel(resized, c, r, k, val);
- }
- if(r == h-1 || im.h == 1) continue;
- for(c = 0; c < w; ++c){
- float val = dy * get_pixel(part, c, iy+1, k);
- add_pixel(resized, c, r, k, val);
+ set_pixel(im, i, j, 0, h);
+ set_pixel(im, i, j, 1, s);
+ set_pixel(im, i, j, 2, v);
}
}
}
- free_image(part);
- return resized;
-}
+ void hsv_to_rgb(image im)
+ {
+ assert(im.c == 3);
+ int i, j;
+ float r, g, b;
+ float h, s, v;
+ float f, p, q, t;
+ for(j = 0; j < im.h; ++j){
+ for(i = 0; i < im.w; ++i){
+ h = get_pixel(im, i , j, 0);
+ s = get_pixel(im, i , j, 1);
+ v = get_pixel(im, i , j, 2);
+ if (s == 0) {
+ r = g = b = v;
+ } else {
+ int index = floor(h);
+ f = h - index;
+ p = v*(1-s);
+ q = v*(1-s*f);
+ t = v*(1-s*(1-f));
+ if(index == 0){
+ r = v; g = t; b = p;
+ } else if(index == 1){
+ r = q; g = v; b = p;
+ } else if(index == 2){
+ r = p; g = v; b = t;
+ } else if(index == 3){
+ r = p; g = q; b = v;
+ } else if(index == 4){
+ r = t; g = p; b = v;
+ } else {
+ r = v; g = p; b = q;
+ }
+ }
+ set_pixel(im, i, j, 0, r);
+ set_pixel(im, i, j, 1, g);
+ set_pixel(im, i, j, 2, b);
+ }
+ }
+ }
+
+ image grayscale_image(image im)
+ {
+ assert(im.c == 3);
+ int i, j, k;
+ image gray = make_image(im.w, im.h, 1);
+ float scale[] = {0.587, 0.299, 0.114};
+ for(k = 0; k < im.c; ++k){
+ for(j = 0; j < im.h; ++j){
+ for(i = 0; i < im.w; ++i){
+ gray.data[i+im.w*j] += scale[k]*get_pixel(im, i, j, k);
+ }
+ }
+ }
+ return gray;
+ }
+
+ image threshold_image(image im, float thresh)
+ {
+ int i;
+ image t = make_image(im.w, im.h, im.c);
+ for(i = 0; i < im.w*im.h*im.c; ++i){
+ t.data[i] = im.data[i]>thresh ? 1 : 0;
+ }
+ return t;
+ }
+
+ image blend_image(image fore, image back, float alpha)
+ {
+ assert(fore.w == back.w && fore.h == back.h && fore.c == back.c);
+ image blend = make_image(fore.w, fore.h, fore.c);
+ int i, j, k;
+ for(k = 0; k < fore.c; ++k){
+ for(j = 0; j < fore.h; ++j){
+ for(i = 0; i < fore.w; ++i){
+ float val = alpha * get_pixel(fore, i, j, k) +
+ (1 - alpha)* get_pixel(back, i, j, k);
+ set_pixel(blend, i, j, k, val);
+ }
+ }
+ }
+ return blend;
+ }
+
+ void scale_image_channel(image im, int c, float v)
+ {
+ int i, j;
+ for(j = 0; j < im.h; ++j){
+ for(i = 0; i < im.w; ++i){
+ float pix = get_pixel(im, i, j, c);
+ pix = pix*v;
+ set_pixel(im, i, j, c, pix);
+ }
+ }
+ }
+
+ image binarize_image(image im)
+ {
+ image c = copy_image(im);
+ int i;
+ for(i = 0; i < im.w * im.h * im.c; ++i){
+ if(c.data[i] > .5) c.data[i] = 1;
+ else c.data[i] = 0;
+ }
+ return c;
+ }
+
+ void saturate_image(image im, float sat)
+ {
+ rgb_to_hsv(im);
+ scale_image_channel(im, 1, sat);
+ hsv_to_rgb(im);
+ constrain_image(im);
+ }
+
+ void exposure_image(image im, float sat)
+ {
+ rgb_to_hsv(im);
+ scale_image_channel(im, 2, sat);
+ hsv_to_rgb(im);
+ constrain_image(im);
+ }
+
+ void saturate_exposure_image(image im, float sat, float exposure)
+ {
+ rgb_to_hsv(im);
+ scale_image_channel(im, 1, sat);
+ scale_image_channel(im, 2, exposure);
+ hsv_to_rgb(im);
+ constrain_image(im);
+ }
+
+ /*
+ image saturate_image(image im, float sat)
+ {
+ image gray = grayscale_image(im);
+ image blend = blend_image(im, gray, sat);
+ free_image(gray);
+ constrain_image(blend);
+ return blend;
+ }
+
+ image brightness_image(image im, float b)
+ {
+ image bright = make_image(im.w, im.h, im.c);
+ return bright;
+ }
+ */
+
+ float bilinear_interpolate(image im, float x, float y, int c)
+ {
+ int ix = (int) floorf(x);
+ int iy = (int) floorf(y);
+
+ float dx = x - ix;
+ float dy = y - iy;
+
+ float val = (1-dy) * (1-dx) * get_pixel_extend(im, ix, iy, c) +
+ dy * (1-dx) * get_pixel_extend(im, ix, iy+1, c) +
+ (1-dy) * dx * get_pixel_extend(im, ix+1, iy, c) +
+ dy * dx * get_pixel_extend(im, ix+1, iy+1, c);
+ return val;
+ }
+
+ image resize_image(image im, int w, int h)
+ {
+ image resized = make_image(w, h, im.c);
+ image part = make_image(w, im.h, im.c);
+ int r, c, k;
+ float w_scale = (float)(im.w - 1) / (w - 1);
+ float h_scale = (float)(im.h - 1) / (h - 1);
+ for(k = 0; k < im.c; ++k){
+ for(r = 0; r < im.h; ++r){
+ for(c = 0; c < w; ++c){
+ float val = 0;
+ if(c == w-1 || im.w == 1){
+ val = get_pixel(im, im.w-1, r, k);
+ } else {
+ float sx = c*w_scale;
+ int ix = (int) sx;
+ float dx = sx - ix;
+ val = (1 - dx) * get_pixel(im, ix, r, k) + dx * get_pixel(im, ix+1, r, k);
+ }
+ set_pixel(part, c, r, k, val);
+ }
+ }
+ }
+ for(k = 0; k < im.c; ++k){
+ for(r = 0; r < h; ++r){
+ float sy = r*h_scale;
+ int iy = (int) sy;
+ float dy = sy - iy;
+ for(c = 0; c < w; ++c){
+ float val = (1-dy) * get_pixel(part, c, iy, k);
+ set_pixel(resized, c, r, k, val);
+ }
+ if(r == h-1 || im.h == 1) continue;
+ for(c = 0; c < w; ++c){
+ float val = dy * get_pixel(part, c, iy+1, k);
+ add_pixel(resized, c, r, k, val);
+ }
+ }
+ }
+
+ free_image(part);
+ return resized;
+ }
#include "cuda.h"
-void test_resize(char *filename)
-{
- image im = load_image(filename, 0,0, 3);
- float mag = mag_array(im.data, im.w*im.h*im.c);
- printf("L2 Norm: %f\n", mag);
- image gray = grayscale_image(im);
-
- image sat2 = copy_image(im);
- saturate_image(sat2, 2);
-
- image sat5 = copy_image(im);
- saturate_image(sat5, .5);
-
- image exp2 = copy_image(im);
- exposure_image(exp2, 2);
-
- image exp5 = copy_image(im);
- exposure_image(exp5, .5);
-
- #ifdef GPU
- image r = resize_image(im, im.w, im.h);
- image black = make_image(im.w*2 + 3, im.h*2 + 3, 9);
- image black2 = make_image(im.w, im.h, 3);
-
- float *r_gpu = cuda_make_array(r.data, r.w*r.h*r.c);
- float *black_gpu = cuda_make_array(black.data, black.w*black.h*black.c);
- float *black2_gpu = cuda_make_array(black2.data, black2.w*black2.h*black2.c);
- shortcut_gpu(3, r.w, r.h, 1, r_gpu, black.w, black.h, 3, black_gpu);
- //flip_image(r);
- //shortcut_gpu(3, r.w, r.h, 1, r.data, black.w, black.h, 3, black.data);
-
- shortcut_gpu(3, black.w, black.h, 3, black_gpu, black2.w, black2.h, 1, black2_gpu);
- cuda_pull_array(black_gpu, black.data, black.w*black.h*black.c);
- cuda_pull_array(black2_gpu, black2.data, black2.w*black2.h*black2.c);
- show_image_layers(black, "Black");
- show_image(black2, "Recreate");
- #endif
-
- show_image(im, "Original");
- show_image(gray, "Gray");
- show_image(sat2, "Saturation-2");
- show_image(sat5, "Saturation-.5");
- show_image(exp2, "Exposure-2");
- show_image(exp5, "Exposure-.5");
-#ifdef OPENCV
- cvWaitKey(0);
-#endif
-}
-
-#ifdef OPENCV
-image ipl_to_image(IplImage* src)
-{
- unsigned char *data = (unsigned char *)src->imageData;
- int h = src->height;
- int w = src->width;
- int c = src->nChannels;
- int step = src->widthStep;
- image out = make_image(w, h, c);
- int i, j, k, count=0;;
-
- for(k= 0; k < c; ++k){
- for(i = 0; i < h; ++i){
- for(j = 0; j < w; ++j){
- out.data[count++] = data[i*step + j*c + k]/255.;
- }
- }
- }
- return out;
-}
-
-image load_image_cv(char *filename, int channels)
-{
- IplImage* src = 0;
- int flag = -1;
- if (channels == 0) flag = -1;
- else if (channels == 1) flag = 0;
- else if (channels == 3) flag = 1;
- else {
- fprintf(stderr, "OpenCV can't force load with %d channels\n", channels);
- }
-
- if( (src = cvLoadImage(filename, flag)) == 0 )
+ void test_resize(char *filename)
{
- printf("Cannot load image \"%s\"\n", filename);
- exit(0);
- }
- image out = ipl_to_image(src);
- cvReleaseImage(&src);
- rgbgr_image(out);
- return out;
-}
+ image im = load_image(filename, 0,0, 3);
+ float mag = mag_array(im.data, im.w*im.h*im.c);
+ printf("L2 Norm: %f\n", mag);
+ image gray = grayscale_image(im);
+ image sat2 = copy_image(im);
+ saturate_image(sat2, 2);
+
+ image sat5 = copy_image(im);
+ saturate_image(sat5, .5);
+
+ image exp2 = copy_image(im);
+ exposure_image(exp2, 2);
+
+ image exp5 = copy_image(im);
+ exposure_image(exp5, .5);
+
+ image bin = binarize_image(im);
+
+#ifdef GPU
+ image r = resize_image(im, im.w, im.h);
+ image black = make_image(im.w*2 + 3, im.h*2 + 3, 9);
+ image black2 = make_image(im.w, im.h, 3);
+
+ float *r_gpu = cuda_make_array(r.data, r.w*r.h*r.c);
+ float *black_gpu = cuda_make_array(black.data, black.w*black.h*black.c);
+ float *black2_gpu = cuda_make_array(black2.data, black2.w*black2.h*black2.c);
+ shortcut_gpu(3, r.w, r.h, 1, r_gpu, black.w, black.h, 3, black_gpu);
+ //flip_image(r);
+ //shortcut_gpu(3, r.w, r.h, 1, r.data, black.w, black.h, 3, black.data);
+
+ shortcut_gpu(3, black.w, black.h, 3, black_gpu, black2.w, black2.h, 1, black2_gpu);
+ cuda_pull_array(black_gpu, black.data, black.w*black.h*black.c);
+ cuda_pull_array(black2_gpu, black2.data, black2.w*black2.h*black2.c);
+ show_image_layers(black, "Black");
+ show_image(black2, "Recreate");
#endif
-
-image load_image_stb(char *filename, int channels)
-{
- int w, h, c;
- unsigned char *data = stbi_load(filename, &w, &h, &c, channels);
- if (!data) {
- fprintf(stderr, "Cannot load image \"%s\"\nSTB Reason: %s\n", filename, stbi_failure_reason());
- exit(0);
+ show_image(im, "Original");
+ show_image(bin, "Binary");
+ show_image(gray, "Gray");
+ show_image(sat2, "Saturation-2");
+ show_image(sat5, "Saturation-.5");
+ show_image(exp2, "Exposure-2");
+ show_image(exp5, "Exposure-.5");
+#ifdef OPENCV
+ cvWaitKey(0);
+#endif
}
- if(channels) c = channels;
- int i,j,k;
- image im = make_image(w, h, c);
- for(k = 0; k < c; ++k){
- for(j = 0; j < h; ++j){
- for(i = 0; i < w; ++i){
- int dst_index = i + w*j + w*h*k;
- int src_index = k + c*i + c*w*j;
- im.data[dst_index] = (float)data[src_index]/255.;
+
+#ifdef OPENCV
+ image ipl_to_image(IplImage* src)
+ {
+ unsigned char *data = (unsigned char *)src->imageData;
+ int h = src->height;
+ int w = src->width;
+ int c = src->nChannels;
+ int step = src->widthStep;
+ image out = make_image(w, h, c);
+ int i, j, k, count=0;;
+
+ for(k= 0; k < c; ++k){
+ for(i = 0; i < h; ++i){
+ for(j = 0; j < w; ++j){
+ out.data[count++] = data[i*step + j*c + k]/255.;
+ }
}
}
+ return out;
}
- free(data);
- return im;
-}
-image load_image(char *filename, int w, int h, int c)
-{
-#ifdef OPENCV
- image out = load_image_cv(filename, c);
-#else
- image out = load_image_stb(filename, c);
+ image load_image_cv(char *filename, int channels)
+ {
+ IplImage* src = 0;
+ int flag = -1;
+ if (channels == 0) flag = -1;
+ else if (channels == 1) flag = 0;
+ else if (channels == 3) flag = 1;
+ else {
+ fprintf(stderr, "OpenCV can't force load with %d channels\n", channels);
+ }
+
+ if( (src = cvLoadImage(filename, flag)) == 0 )
+ {
+ fprintf(stderr, "Cannot load image \"%s\"\n", filename);
+ char buff[256];
+ sprintf(buff, "echo %s >> bad.list", filename);
+ system(buff);
+ return make_image(10,10,3);
+ //exit(0);
+ }
+ image out = ipl_to_image(src);
+ cvReleaseImage(&src);
+ rgbgr_image(out);
+ return out;
+ }
+
#endif
- if((h && w) && (h != out.h || w != out.w)){
- image resized = resize_image(out, w, h);
- free_image(out);
- out = resized;
+
+ image load_image_stb(char *filename, int channels)
+ {
+ int w, h, c;
+ unsigned char *data = stbi_load(filename, &w, &h, &c, channels);
+ if (!data) {
+ fprintf(stderr, "Cannot load image \"%s\"\nSTB Reason: %s\n", filename, stbi_failure_reason());
+ exit(0);
+ }
+ if(channels) c = channels;
+ int i,j,k;
+ image im = make_image(w, h, c);
+ for(k = 0; k < c; ++k){
+ for(j = 0; j < h; ++j){
+ for(i = 0; i < w; ++i){
+ int dst_index = i + w*j + w*h*k;
+ int src_index = k + c*i + c*w*j;
+ im.data[dst_index] = (float)data[src_index]/255.;
+ }
+ }
+ }
+ free(data);
+ return im;
}
- return out;
-}
-image load_image_color(char *filename, int w, int h)
-{
- return load_image(filename, w, h, 3);
-}
+ image load_image(char *filename, int w, int h, int c)
+ {
+#ifdef OPENCV
+ image out = load_image_cv(filename, c);
+#else
+ image out = load_image_stb(filename, c);
+#endif
-image get_image_layer(image m, int l)
-{
- image out = make_image(m.w, m.h, 1);
- int i;
- for(i = 0; i < m.h*m.w; ++i){
- out.data[i] = m.data[i+l*m.h*m.w];
+ if((h && w) && (h != out.h || w != out.w)){
+ image resized = resize_image(out, w, h);
+ free_image(out);
+ out = resized;
+ }
+ return out;
}
- return out;
-}
-float get_pixel(image m, int x, int y, int c)
-{
- assert(x < m.w && y < m.h && c < m.c);
- return m.data[c*m.h*m.w + y*m.w + x];
-}
-float get_pixel_extend(image m, int x, int y, int c)
-{
- if(x < 0 || x >= m.w || y < 0 || y >= m.h || c < 0 || c >= m.c) return 0;
- return get_pixel(m, x, y, c);
-}
-void set_pixel(image m, int x, int y, int c, float val)
-{
- assert(x < m.w && y < m.h && c < m.c);
- m.data[c*m.h*m.w + y*m.w + x] = val;
-}
-void add_pixel(image m, int x, int y, int c, float val)
-{
- assert(x < m.w && y < m.h && c < m.c);
- m.data[c*m.h*m.w + y*m.w + x] += val;
-}
+ image load_image_color(char *filename, int w, int h)
+ {
+ return load_image(filename, w, h, 3);
+ }
-void print_image(image m)
-{
- 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;
+ image get_image_layer(image m, int l)
+ {
+ image out = make_image(m.w, m.h, 1);
+ int i;
+ for(i = 0; i < m.h*m.w; ++i){
+ out.data[i] = m.data[i+l*m.h*m.w];
+ }
+ return out;
+ }
+
+ float get_pixel(image m, int x, int y, int c)
+ {
+ assert(x < m.w && y < m.h && c < m.c);
+ return m.data[c*m.h*m.w + y*m.w + x];
+ }
+ float get_pixel_extend(image m, int x, int y, int c)
+ {
+ if(x < 0 || x >= m.w || y < 0 || y >= m.h || c < 0 || c >= m.c) return 0;
+ return get_pixel(m, x, y, c);
+ }
+ void set_pixel(image m, int x, int y, int c, float val)
+ {
+ assert(x < m.w && y < m.h && c < m.c);
+ m.data[c*m.h*m.w + y*m.w + x] = val;
+ }
+ void add_pixel(image m, int x, int y, int c, float val)
+ {
+ assert(x < m.w && y < m.h && c < m.c);
+ m.data[c*m.h*m.w + y*m.w + x] += val;
+ }
+
+ void print_image(image m)
+ {
+ 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");
- 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(w, h, 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, 0, h_offset);
+ 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;
}
- 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, w_offset, h_offset);
- free_image(layer);
+
+ image filters = make_image(w, h, 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, 0, h_offset);
}
- }
- 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(w, h, 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, w_offset, 0);
- }
- 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, w_offset, h_offset);
- free_image(layer);
+ 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, w_offset, h_offset);
+ free_image(layer);
+ }
}
+ free_image(copy);
}
- 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(w, h, 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, w_offset, 0);
+ }
+ 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, w_offset, h_offset);
+ free_image(layer);
+ }
+ }
+ free_image(copy);
+ }
+ return filters;
+ }
+
+ void show_image_normalized(image im, const char *name)
+ {
+ image c = copy_image(im);
+ normalize_image(c);
+ show_image(c, name);
+ free_image(c);
}
- return filters;
-}
-void show_images(image *ims, int n, char *window)
-{
- image m = collapse_images_vert(ims, n);
- /*
- int w = 448;
- int h = ((float)m.h/m.w) * 448;
- if(h > 896){
- h = 896;
- w = ((float)m.w/m.h) * 896;
- }
- image sized = resize_image(m, w, h);
- */
- normalize_image(m);
- image sized = resize_image(m, m.w, m.h);
- save_image(sized, window);
- show_image(sized, window);
- free_image(sized);
- free_image(m);
-}
+ void show_images(image *ims, int n, char *window)
+ {
+ image m = collapse_images_vert(ims, n);
+ /*
+ int w = 448;
+ int h = ((float)m.h/m.w) * 448;
+ if(h > 896){
+ h = 896;
+ w = ((float)m.w/m.h) * 896;
+ }
+ image sized = resize_image(m, w, h);
+ */
+ normalize_image(m);
+ image sized = resize_image(m, m.w, m.h);
+ save_image(sized, window);
+ show_image(sized, window);
+ free_image(sized);
+ free_image(m);
+ }
-void free_image(image m)
-{
- free(m.data);
-}
+ void free_image(image m)
+ {
+ free(m.data);
+ }
--
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