convert rgb to gray

Author: ZilinSONG

Image_Converter/images_converter.m

@@ -0,0 +1,76 @@
+function images_converter()   
+    function image_gray = a(img)
+        %org_name = ['rgb/010',int2str(ind),'.png'];
+        i=img;
+        [m, n, d] = size(i);
+        image_gray = rgb2gray(i);
+
+        
+
+        for a=1:m
+             for b=1:n
+                if (i(a,b,1)>60 && i(a,b,1)<80)    %convert to sky
+                    image_gray(a,b) = 23;
+                elseif (i(a,b,1)>0 && i(a,b,1)<65)    %convert to building
+                    image_gray(a,b) = 11;
+                elseif (i(a,b,1)>136 && i(a,b,1)<150)   %convert to vegetation
+                    image_gray(a,b) = 21;
+                elseif (i(a,b,1)>128 && i(a,b,1)<135)	%convert to road
+                    image_gray(a,b) = 7;
+                elseif ((i(a,b,1)>160 && i(a,b,1)<255) || (i(a,b,3)>110 && i(a,b,3)<125))   %convert to sidewalk
+                    image_gray(a,b) = 8;
+                else
+                    image_gray(a,b) = 0;
+                end
+             end
+        end
+    end
+    
+
+    function main()
+        x=zeros(1024,2048);
+        x(1:1024,1:2048)=255;
+
+        image_num = 863;
+        input_path = 'output'; %folder of input images
+        output_path = 'output_night';%output foloder
+        mkdir([output_path, '/white']); %generate a folder to store the corresponding white images
+        for i=1:image_num
+            if(i<10)
+                name_org = [input_path,'/sc1_sun_colorLabeled_new00',int2str(i),'.png'];
+                img=imread(name_org);
+                name = [output_path,'/downtown_00_0000', int2str(i), 'leftImg8bit.png'];
+                img1=a(img);
+
+                imwrite(img1,name);
+                %generate corresponding white image
+                name_white = [output_path,'/white/downtown_00_0000', int2str(i), 'leftImg8bit.png'];
+                imwrite(x,name_white);
+            elseif(length(int2str(i))==2)
+
+                name_org = [input_path,'/sc1_sun_colorLabeled_new0',int2str(i),'.png'];
+                img=imread(name_org);
+                name = [output_path,'/downtown_00_000', int2str(i), 'leftImg8bit.png'];
+                img1=a(img);
+                imwrite(img1,name);
+                %generate corresponding white image
+                name_white = [output_path,'/white/downtown_00_000', int2str(i), 'leftImg8bit.png'];
+                imwrite(x,name_white);
+             elseif(length(int2str(i))==3)
+
+                name_org = [input_path,'/sc1_sun_colorLabeled_new',int2str(i),'.png'];
+                img=imread(name_org);
+                name = [output_path,'/downtown_00_00', int2str(i), 'leftImg8bit.png'];
+                img1=a(img);
+                imwrite(img1,name);  
+                %generate corresponding white image
+                name_white = [output_path,'/white/downtown_00_00', int2str(i), 'leftImg8bit.png'];
+                imwrite(x,name_white);
+            end
+        end
+    end
+        
+
+    main();
+end
+