From f618466c25d43f3bae9e40920273bf77de1e1149 Mon Sep 17 00:00:00 2001
From: leochanj105 <leochanj@live.unc.edu>
Date: Mon, 19 Oct 2020 23:09:30 -0400
Subject: initial sd-vbs

initial sd-vbs

add sd-vbs

sd-vbs
---
 SD-VBS/common/matlab/write_image8u_bmp.m | 88 ++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100755 SD-VBS/common/matlab/write_image8u_bmp.m

(limited to 'SD-VBS/common/matlab/write_image8u_bmp.m')

diff --git a/SD-VBS/common/matlab/write_image8u_bmp.m b/SD-VBS/common/matlab/write_image8u_bmp.m
new file mode 100755
index 0000000..71b48ef
--- /dev/null
+++ b/SD-VBS/common/matlab/write_image8u_bmp.m
@@ -0,0 +1,88 @@
+function image = write_image8u_bmp(inpImage, pathName) % this is matlab's sequence, removed width, height since they can be inferred from image
+
+BYTES_PER_PIXEL = 3;
+
+fid = fopen (pathName,'w'); %FILE *input;
+% 		//check for the input FILE pointer
+if(fid == 0)		
+    disp('File pointer error');
+else
+    height = size(inpImage,1);
+    width=size(inpImage,2);
+    signature(1) = 'B';
+    signature(2) = 'M';
+    
+    reserved1 = 0;
+    reserved2 = 0;
+    file_size = (height*width*BYTES_PER_PIXEL)+54;
+    offset=54;
+	size_of_infoheader=40;
+	number_of_planes=1;
+	bits_per_pixel= 8*BYTES_PER_PIXEL ;
+	compression_method=0;
+	hori_reso=2835;
+	vert_reso=2835;
+	no_of_colors=0;
+	no_of_imp_colors=0;
+	
+% 	start of header information
+    fwrite(fid,signature(1),'char');  
+    fwrite(fid,signature(2),'char');  
+    fwrite(fid,file_size,'int');
+    fwrite(fid,reserved1,'short');
+    fwrite(fid,reserved2,'short');
+    fwrite(fid,offset,'int');
+    fwrite(fid,size_of_infoheader,'int');
+    fwrite(fid,width,'int');
+    fwrite(fid,height,'int');
+    fwrite(fid,number_of_planes,'short');
+    fwrite(fid,bits_per_pixel,'short');
+    fwrite(fid,compression_method,'int');
+    
+    bytes_of_bitmap=width*height*BYTES_PER_PIXEL;
+    
+    fwrite(fid,bytes_of_bitmap,'int');
+    fwrite(fid,hori_reso,'int');    
+    fwrite(fid,vert_reso,'int');    			
+    fwrite(fid,no_of_colors,'int');    			
+    fwrite(fid,no_of_imp_colors,'int');    			
+
+	% Conditions to check whether the BMP is gray scaled and handling few exceptions
+
+    if (width <= 0 || height <= 0 || signature(1) ~= 'B' || signature(2) ~= 'M')
+        return;
+    end
+			
+	% total size of pixels
+	% pixSize=srcImage->height * srcImage->width * NO_OF_BYTE_PER_PIXEL; //*3 is done as it is a 3 channel image
+    %reverse the image back
+
+    for nI=1:height
+        count = 0;
+        for nJ=1:width
+          temp = inpImage((height - nI+1),nJ,3);
+          fwrite(fid,temp,'char');
+          temp = inpImage((height - nI+1),nJ,2);
+          fwrite(fid,temp,'char');
+          temp = inpImage((height - nI+1),nJ,1);
+          fwrite(fid,temp,'char');
+          
+        end
+       pad = 4 - (width*BYTES_PER_PIXEL - (4*floor(width*BYTES_PER_PIXEL/4))); %bitmap multiple-of-4 requirement
+       if pad ~= 0
+           temp=0;
+           for cnt = 1:pad
+              fwrite(fid,temp,'char');
+%               fwrite(fid,temp,'char');
+%               fwrite(fid,temp,'char');              
+           end
+       end
+    end
+    
+    outImage = imread(pathName);
+    imshow(outImage);
+    fclose(fid);	
+    
+end
+            
+        
\ No newline at end of file
-- 
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