4 ControlWindow controlWindow;
5 ControlWindow viewWindow;
13 float scope_ratio = 5; // 1 to 100%
15 final int low_scope_speed_ratio = 20;
16 final float low_average_speed_ratio = 0.1;
18 final int high_scope_speed_ratio = 5;
19 final float high_average_speed_ratio = 0.1;
21 int scope_speed_ratio = low_scope_speed_ratio; // 1 to scope
22 float average_speed_ratio = low_average_speed_ratio; // 0 to picture width
24 final int max_lum_class = 30; // 1 to 256
25 int class_th = 15; // class threshold
31 final float delta = 0.01;
32 float[] lut_u = new float[256];
33 float[] lut_n = new float[256];
34 float[] lut_o = new float[256];
44 int view_width, view_height;
49 cp5 = new ControlP5(this);
51 controlWindow = cp5.addControlWindow("controlP5window", 100, 100, 360, 600)
53 .setBackground(color(40))
56 cp5.addTextlabel("guide")
59 .setColorValue(0xffffffff)
60 .setFont(createFont("Georgia",20))
61 .moveTo(controlWindow)
64 readmeText = cp5.addTextlabel("label")
65 .setText("Select an under exposed photo.")
67 .setColorValue(0xffffffff)
68 .setFont(createFont("Georgia",18))
69 .moveTo(controlWindow)
72 cp5.addSlider("gamma_u")
76 .moveTo(controlWindow)
79 cp5.addSlider("gamma_n")
83 .moveTo(controlWindow)
86 cp5.addSlider("gamma_o")
90 .moveTo(controlWindow)
93 cp5.addSlider("a_value")
97 .moveTo(controlWindow)
100 cp5.addSlider("color_gain")
102 .setPosition(40, 340)
104 .moveTo(controlWindow)
107 cp5.addSlider("scope_ratio")
109 .setPosition(40, 380)
111 .moveTo(controlWindow)
114 cp5.addSlider("class_th")
116 .setPosition(40, 420)
118 .moveTo(controlWindow)
121 cp5.addButton("Save Image")
124 .moveTo(controlWindow)
127 cp5.addButton("Exit")
128 .setPosition(160,500)
130 .moveTo(controlWindow)
133 String imgPath = selectInput();
134 img0 = loadImage(imgPath);
135 readmeText.setText("Select a normal exposed photo.");
137 imgPath = selectInput();
138 img1 = loadImage(imgPath);
140 readmeText.setText("Select an over exposed photo.");
142 imgPath = selectInput();
143 img2 = loadImage(imgPath);
145 writeImg = createImage(img0.width, img0.height, RGB);
150 readmeText.setText("Completed.");
152 if(img0.width > size_x || img0.height > size_y){
153 float k_width = img0.width / size_x;
154 float k_height = img0.height /size_y;
156 if(k_width > k_height){
161 view_width = (int)(img0.width/k_max);
162 view_height = (int)(img0.height/k_max);
164 view_width = img0.width;
165 view_height = img0.height;
169 public void controlEvent(ControlEvent theEvent) {
170 if(theEvent.isFrom("color_gain")) {
174 if(theEvent.isFrom("gamma_u")) {
178 if(theEvent.isFrom("gamma_n")) {
182 if(theEvent.isFrom("gamma_o")) {
186 if(theEvent.isFrom("Save Image")) {
187 String imgPath = selectOutput();
191 if(theEvent.isFrom("Exit")) {
200 image(writeImg, 0, 0, view_width, view_height);
204 hdr_img_r = new float[img0.height*img0.width];
205 hdr_img_g = new float[img0.height*img0.width];
206 hdr_img_b = new float[img0.height*img0.width];
212 for (int i = 0; i < 256; i++){
213 lut_u[i] = 255*pow(((float)i/255),(1/gamma_u));
216 for (int i = 0; i < 256; i++){
217 lut_n[i] = 255*pow(((float)i/255),(1/gamma_n));
220 for (int i = 0; i < 256; i++){
221 lut_o[i] = 255*pow(((float)i/255),(1/gamma_o));
224 for(int i = 0; i < img0.width*img0.height; i++){
225 color tmp_color0 = img0.pixels[i];
226 color tmp_color1 = img1.pixels[i];
227 color tmp_color2 = img2.pixels[i];
230 lut_u[(int)red(tmp_color0)] + lut_n[(int)red(tmp_color1)] + lut_o[(int)red(tmp_color2)];
232 lut_u[(int)green(tmp_color0)] + lut_n[(int)green(tmp_color1)] + lut_o[(int)green(tmp_color2)];
234 lut_u[(int)blue(tmp_color0)] + lut_n[(int)blue(tmp_color1)] + lut_o[(int)blue(tmp_color2)];
236 hdr_img_r[i] = hdr_img_r[i]/3*color_gain;
237 hdr_img_g[i] = hdr_img_g[i]/3*color_gain;
238 hdr_img_b[i] = hdr_img_b[i]/3*color_gain;
243 for(int y = 0; y < img0.height; y++){
244 for(int x = 0; x < img0.width; x++){
245 int pos = x + y*img0.width;
246 color tmp_color = color(hdr_img_r[pos], hdr_img_g[pos], hdr_img_b[pos]);
247 set(x, y, tmp_color);
258 int scope = (int)(sqrt(img0.height*img0.width) * scope_ratio/100);
259 int scope_speed = (int)(scope * scope_speed_ratio/100)+1;
260 int average_speed = (int)(sqrt(img0.height*img0.width) * average_speed_ratio/100);
263 // println("scope= " + scope);
264 // println("scope_speed= " + scope_speed);
265 // println("average_speede= " + average_speed);
268 color[] tmp_img = new color[img0.height*img0.width];
269 int tmp = average_speed;
272 float[] lum = new float[img0.height*img0.width];
273 float[] lum_local = new float[img0.height*img0.width];
274 int[] lum_class = new int[img0.height*img0.width];
275 float[] u = new float[img0.height*img0.width];
276 float[] v = new float[img0.height*img0.width];
278 for(int y = 0; y < img0.height; y++){
279 for(int x = 0; x < img0.width; x++){
280 int pos = x + y*img0.width;
281 lum[pos] = 0.3*hdr_img_r[pos] + 0.59*hdr_img_g[pos] + 0.11*hdr_img_b[pos];
282 lum_local[pos] = log((0.3*hdr_img_r[pos] + 0.59*hdr_img_g[pos] + 0.11*hdr_img_b[pos])/256+delta);
283 u[pos] = -0.17*hdr_img_r[pos] - 0.33*hdr_img_g[pos] + 0.5*hdr_img_b[pos];
284 v[pos] = 0.5*hdr_img_r[pos] -0.42*hdr_img_g[pos] - 0.08*hdr_img_b[pos];
288 int max_lum = (int)max(lum);
289 for(int y = 0; y < img0.height; y++){
290 for(int x = 0; x < img0.width; x++){
291 int pos = x + y*img0.width;
292 lum_class[pos] = (int)(lum[pos]/((max_lum+1)/max_lum_class));
296 for(int y = 0; y < img0.height; y++){
298 for(int x = 0; x < img0.width; x++){
299 int pos = x + y*img0.width;
303 if(tmp > average_speed){
305 for(int y_2 = y-scope; y_2 < y+scope; y_2 += scope_speed){
306 for(int x_2 = x-scope; x_2 < x+scope; x_2 += scope_speed){
307 if(y_2 >= 0 && y_2 < img0.height && x_2 >=0 && x_2 < img0.width){
308 int pos_2 = x_2 + y_2*img0.width;
309 if(abs(lum_class[pos] - lum_class[pos_2]) < class_th){
311 lum_sum += lum_local[pos_2];
316 lum_sum_w = exp(lum_sum/(float)sum_numb);
319 float lum_w = lum[pos]/lum_sum_w*a_value;
320 float r = lum_w + 1.4*v[pos];
321 float g = lum_w -0.34*u[pos] -0.71*v[pos];
322 float b = lum_w + 1.77*u[pos];
324 writeImg.pixels[pos] = color(r,g,b);
327 writeImg.updatePixels();